A...flea market that is understandable and easy to use for everyone, with the connection function on video and pictures for sale, and up to 12 categories and should be expandable, with admin panel function and login function and chat system between buyer and seller and contact Form! **All in German L...engine optimization should be friendly for search terms on the homepage! ** Once again: 1. for Sell with Video from YouTube and Pictures Function and Banner and Video for Platform. 2. 12 Categories (expendable). and Registration (Registration form) and also Password Recovery and remind me checkbox function. function online on the page (seller and buyer). form. *Only in PHP must be developed* More Information can be found in the attachment! Thanks & Best Regards Peyman
I am looking for a skilled developer with an expertise in AI, specifically in Machine Learning and Image Recognitio...developer with an expertise in AI, specifically in Machine Learning and Image Recognition for an Image Search project. MUST MUST SHOW EXAMPLES OF WORK IN PYTHON - FIREBASE AND NODE JS. DO NOT PLEASE RESPOND IF YOU DO NOT HAVE ALL 3 SKILLS SETS AND CAN PROVE IT PLEASE. THANKS Key Requirements: Hi we need skill sets in Node JS - Firebase and Python to work on our team to complete our image generator - it is already working on our site an we need to intergrate it to our new site so most of our hard work has been done, now we need a Dev for one day's work under the supervision of our CTO. If you have the skills and experience listed above, I look forward to s...
I'm looking for an experienced eCommerce and web development expert to create a solution that will enable my customers to sell my products on their websites via Woo Commerce with white-labelling. Key Features Needed: - Custom branding options for each customer - Ability to refine colors and logos - Capability to add custom CSS styles Needed Solution: Since I lack a plugin or API for this task, you will be responsible for developing a fresh, custom solution OR identifying existing plugins that can be used. Skills and Experience: - Knowledge and expertise in implementing white-label solutions - Proficiency in Woo Commerce and eCommerce platforms - Strong web development skills for customization options - Experience with CSS for design purposes Your creativity and strategic p...
...a proficient PHP developer to create an integration plugin within a Moodle Learning Management System (LMS). I'm looking for a php application that can be integrated into a moodle type lms. This application allows you to send each registered user his "pay slip". the user must be able to read the document which must be present in a private folder, accessible only from the user profile. The source file can be found into moodle, inside manager’s private folder. the sending into the private folder of the moodle user area must be done massively. each "pay slip" document is in PDF format and is named with an identification code or with the user's name Key Responsibilities: - Create seamless integration with existing Moodle LMS infra...
We are looking for core Php API 3 on immediate basis delivery.
I need a developer versed in PHP Codelignter to build me a cloud-based storage system complete with an admin and client portal. The system should be designed to enable my clients to access their unique folders and upload multiple file types, which I as an admin must be able to view. Here's what you'll do: - Construct a system where an admin can readily create and manage clients - Ensure clients can upload Image files, Text documents, Video files, and PDF/documents to their specific folders but not delete them - Develop a secure access method through a login/password system and a unique access code Ideal skills: - Proficient in PHP, particularly codelignter framework - Strong understanding of cloud-based systems - Experience in interface design for smooth user expe...
...on the hunt for a knowledgeable individual with intermediate level skills in both Firebase Realtime Database and PHP MySQL. I need assistance in conducting a migration project between these two platforms. - While there isn't a stringent timeline for the project, adept time-management skills are appreciated. - Your primary responsibility would be to facilitate the migration process. Ensure a seamless transition without any loss of data or functionality is what I anticipate. - Regarding data cleaning and optimization during migration, it's still an open discussion point. Your insights will be useful to help decide on its necessity. - Expertise in Firebase Realtime Database and PHP MySQL is a must. A concrete tertiary qualification or similar experience is apprecia...
I'm seeking an experienced puzzles creator to make a classic American-stylecrossword generator. The crosswords should be crafted at an intermediate difficulty level, and should not exceed a size of 25x25 squares. Ideal candidate must: - Have an understanding of the classic crossword mechanism - Be able to create crosswords of different difficulty levels, particularly intermediate
...the freelancers who have robust skills on API integration, Plugin installation, or Custom development and previous experience with payment processors are highly encouraged to bid. I require this task to be completed as soon as possible. Your responsibilities: - Advise me on the best method to integrate the card authorizing feature. - Enable the functionality so that each time I process a sale, the card details will be authorized and the amount would be blocked on the client's card. - Once we have delivered our services and the client is happy, we will settle those charges. And this is when the amount will come to our account finally. Required skills/experiences: - Extensive experience and knowledge in API integration, Plugin installation, and Custom development....
I'm looking for a skilled developer experienced with WordPress modifications. The core task of this project involves the functionality modifications of my existing WordPress site. Specifically, you'll be working on the following areas: - Order overview: The task requires adding new metadata to the order overview to achieve a more detailed and organized presentation. - Member ID creation: I'm aiming for a more individualized member approach hence the need for the ability to assign unique IDs to each member. More Details: Task 1: Create a new user metadata called MEMBER ID. MEMBER ID is auto-generated when users register. This MEMBER ID is associated to users permanently and cannot be changed by users. Task 2: Add a new custom field “Sp...
We require a VectorWorks, VectorScript plugin built to do some calculations and present results. The following is a brief summary. More details will be supplied to successful candidate. In we need to be able to click in the VW, 4 extents (length of item, start, stop, and width). A popup should show and advises some information. A data table is then referenced (think Excel - VLOOKUP) The object is then measured, labelled, and put into a table on the sheet.
...with more details. 4. Need someone who can make sure that when photos are uploaded on backend, they don't look stretched on the front end. Images must be contained. 5. Automatic emails must be configured within Woocommerce / MailerLite 6. Front-end design is done, but a few other things left to polish. 7. Photos stamp with my logo on all pictures that are uploaded by customers (there's a free plugin that can be modified, but must be properly modified). 8. Making sure that when customer cancels paying for listing, the listing does not get removed from the site. However, it will have to indicate that the listing is in "Inactive" status and the Contact form be disabled from anyone having to fill it out from the front-end. 9. Testing phase - making sure cust...
I am in need of a custom-developed pine script to generate trading signals personalised to my preferences. Here's an outline of my specific requirements: 1. Purpose: The ultimate purpose of the script is to generate trading signals. This will help me make well-informed decisions when buying or selling stocks. 2. Compatibility: The script needs to be fully compatible and work flawlessly with TradingView as it's my platform of choice for trading activities. 3. Assets: The developed script must exclusively work with stocks. I need the script to generate signals that will guide my buying and selling decisions across different stock markets. Experienced developers with in-depth knowledge of the TradingView platform, and proficiency in pine script programming are ideal for this pro...
I’m in need of an experienced PHP developer to upgrade PHP files on my content management website, the website mainly handles blog posts and articles. The objective of this project is to enhance the website's performance, security and manageability by upgrading it to current PHP version Desired Skills and Experience: 1. Advanced PHP coding knowledge 2. Prior Experience with Content Management Websites 3. Understanding of website optimization Deliverables: 1. Upgraded PHP files 2. A more efficient website 3. Report on upgrades made and their impacts. In summary, someone who has worked on similar projects would be the best fit as they would know what the project entails and therefore improve delivery time and work quality.
I need someone to create and install HTML and JavaScript code for a one-page subdomain in WordPress that uses the Astra theme. (The Astra theme has a free plugin to embed JavaScript on a WP page, but you can do that however you want.) The page will have a textbox that a visitor can use to modify text they have typed, pasted in, or that will be extracted from a url they have entered. When the text is pasted in or extracted from a URL, it needs to retain all of the HTML elements and not immediately convert to plain text. You will not need to design anything else on the page except the settings and text box areas. There should be a settings area above the text box that will allow the user to customize how they want the text reformatted. The available settings will be somewh...
i have a custom wordpress plugin / script wich automatically generate the products variations based on the product attributes but is not working as expected. my budget is under $30 so please dont bid more or i'll automatically decline your order. code is attached
I'm seeking a well-versed Wordpress developer to integrate a Woocommerce plugin into my website. Specifically, the plugin must have a membership functionality with credit card processing as a payment method. Here's what I need: -Membership: You'll set up a system where users can sign up as members from my website, then process their subsequent membership payments. -Credit Card Processing: As our preferred payment method, ensure they can pay using their credit cards. Ideal skills include proficient knowledge of Wordpress and Woocommerce plugin development. Familiarity with payment gateway integration, specifically credit card processing, is highly essential. Experience in setting up membership functionality on websites would also give a ...
As a website owner, I'm encountering key performance issues that need immediate resolution. Specifically, my website is suffering from slow page loading times. Additionally, the Site Kit plugin, a Google product, is malfunctioning and needs troubleshooting. To address both these issues, I'm seeking a knowledgeable professional with a solid background in improving website speed performance and resolving plugin problems. Here's what you'd be working on: • Diagnose and improve slow page loading times • Find and troubleshoot issues with the malfunctioning Site Kit plugin • Investigate if any other active plugins are causing interferences Ideal skills required for this project are website optimization, experience in dealing with serv...
I am looking to hire a seasoned WordPress developer to assist with building a resume website. There is no specific deadline; I am more focused on the quality of work. The primary task at hand will be: - To create a clean, professional, and appealing WordPress resume website from scratch. Please note, theme customization and plugin development might be involved. However, specifics on the aspects of customization will be discussed as we move along with the project. The ideal candidate should possess: - Proven experience in WordPress development - Knowledge and experience with creating resume websites - A good understanding of plugin development and WordPress theme customization - Excellent attention to detail to ensure a user-friendly and functio...
I'm looking for an expert SQL developer who understands XML data. My project requires the importation of XML directly into a SQL table. It's important that the output undergoes specific adjustments. Ideal Skills Include: - Advanced knowledge in SQL - Proficiency in XML data structure - Understanding of data filtering, formatting and sorting The Task: - Adjust the current SQL script to output the imported XML data as CSV files. - Apply filtering to the XML data; specifically, filtering by certain attributes. - Incorporate formatting and sorting into the output stage. Your key deliverable will be an optimized SQL script that runs smoothly and produces CSV output according to the specifications. If this is something you can deliver, I would lov...
Note automatic response will not be considered I'm urgently in need of an experienced professional to finding a solution for an issue I'm having with Apache and PHP-FPM during high traffic. - Specific Issue: During periods of high traffic, I'm receiving error messages disrupting communication between Apache and PHP-FPM, OS is CENTOS7 - Error Encountered: [proxy:error] [pid 37043] AH00940: FCGI: disabled connection for (php-fpm) - Time Frame: The problem needs to be rectified as soon as possible The ideal freelancer for this task should have significant experience in Apache and PHP-FPM, with a particular focus on handling issues related to high traffic situations. Insight into the [proxy:error] message would be highly beneficial. 1. Our serve...
Use notegpt to generate video transcript. Loading transcripts 10-20 times into a word document with all transcripts headed with date of presentation, location and speakers. From this project, my goal is: - To generate highly accurate transcripts from a series of videos (all on Youtube , using youtube transcript generator) - To ensure these transcripts are readable by a Chat GPT model - To facilitate corresponding answers to questions using chatgptn based on each transcript Freelancers should convert the video transcripts into Word documents as requested. Familiarity with, and ability to work effectively with GPT-4 is nice to have This project requires: - Youtube transcript generation skills - ability to use Notegpt As a potential bidder, your experience in using chatgpt and...
I want a php developer. I purchased a SMTP server backend from codecanyon. I want to setup it on my website and make landing page also. Don't bid if you can't setup it. PLEASE ADD IN YOUR BID "AALOO" THEN I KNOW YOU'RE NOT A BOT. OTHERWISE DIRECTLY BLOCK
I'm currently dealing with a file (PHP and MySQL nested queries) that urgently needs to be resolved. - The content of that page takes a long time to load (sometimes i get a timeout error message, but not always). While the page is trying to load, the other pages of the website are not accessible (loading indefinitely until the problematic page has finished loading). I think we have to remove the nested loops and add some code to fetch complete data at once and then we can run the loops. Or the page has to be rewritten fully. The problem requires an experienced PHP and MySQL freelancer with strong diagnostic skills, who is not averse to confronting an undefined problem. For now please.
I am in need of a PL/SQL expert to join my project. Getting error 19115 XML error need help in investing a loop plsql procedure to see where it is failing and handling exception Main Duties: * Database Design * Writing Stored Procedures * Performance Tuning Ideal Candidate: * Must have advanced level experience in PL/SQL development. Application Instructions: * Please highlight your relevant experience in your application. Only freelancers with advanced experience, and can showcase this in their applications, will be considered for this project. I look forward to your bids.
We are looking for an experienced web developer to create a modern and responsive News Blog Website. The website will serve as a platform to publish news articles, opinion pieces, and other related content. The project requires proficiency in Php, Ajax, JavaScript, HTML5, and CSS. Key Features: User Authentication: Implement a secure user authentication system allowing users to register, log in, and manage their profiles. Article Management: Develop a user-friendly interface for administrators to create, edit, and delete articles. Users should also have the ability to comment on articles. Responsive Design: Ensure the website is optimized for various devices and screen sizes, providing a seamless browsing experience. Search Functionality: Implement a search feature allowing users ...
Looking for wordpress developer to fix issues with 2 website. Website 1: in gravity forms calculator, i need to hide calculation fields until all input data fields are filled. in addition, one of calculation fields, i need to manipulate calculation result displaid, to round result, and have max result possible. Website 2: in plugin "Checkout Field Editor for WooCommerce" - doesn't send fields in order email. need to fix. and another very small css fix which I didn't manage. must be delivered today (in next 12 hours). ping me if possible. if i happy with work, more projects in near future
Join Our Team and Shape the Future of Online Real Estate! Are you a seasoned PHP and MySQL expert ready to tackle a multifaceted challenge? is actively seeking a dynamic individual to join our team as a PHP & MySQL Partner - Tester and Programmer. As we embark on a transformative journey, your expertise is crucial in cleaning up code, conducting error testing, and optimizing the performance of our complex real estate auction site. About Us: With over 11 years of expertise in the real estate industry, , founded by Chris and Missy, is on a mission to revolutionize the online real estate landscape. Our platform is designed to elevate the buying and selling experience through innovative solutions and empathetic design. Our Vision: At , we're not just
I'm currently dealing with a file (PHP and MySQL nested queries) that urgently needs to be resolved. - The content of that page takes a long time to load (sometimes i get a timeout error message, but not always). While the page is trying to load, the other pages of the website are not accessible (loading indefinitely until the problematic page has finished loading). I think we have to remove the nested loops and add some code to fetch complete data at once and then we can run the loops. Or the page has to be rewritten fully. The problem requires an experienced PHP and MySQL freelancer with strong diagnostic skills, who is not averse to confronting an undefined problem. For now please.
I require a new Google Consent v2 bar on my website to ensure compliance with Google tag policy Specific Requirements: - Integrate Google Consent v2 script consent management - configure the necessary code snippets to be forwarded to Google Implement consent options and handle respective parameters for: - Google An...Hungarian text for you Important note Please write in your bid proposal: which Google Tag Manager consent code corresponds to enabling "Analytics Storage"?. This will filter out automatic bids and ensures you have experience. Code must be ocmod, no core files overwritten. At the end of work, I will get zip package of xml + css + JavaScript files. The project should be delivered ideally in 4-5 days
I am currently seeking a skilled PHP Laravel developer to assist me with a project. I have a budget of INR2000 and a timeframe of 3 days for this task. **Project Overview:** I have a PHP Laravel source code that includes a licensing program, and I am looking for a talented developer to remove the entire licensing mechanism. Once the licensing program is successfully removed, I expect the freelancer to hand over the complete source code. I can provide a hosting package for testing purposes, or the freelancer is welcome to use their own hosting account. **Deliverables:** 1. Removal of the licensing program from the source code. 2. Handover of the complete source code. 3. Testing on provided hosting or freelancer's own hosting account. **Additional Requirements:** I requ...
I'm looking for skilled woocommerce php developer to create custom payment provider plugin. Here's what I need: - Create payment provider plugin(we have our own provider, but need plugin to be usable within our made provider) - We provide schema for business logic with how each rest api endpoint should be called(there is only 2) Ideal Skills: - Proficient in woocommerce plugin creation - Knowledge of rest APIs
I am looking for a PHP application which can track my job applications. The application is composed of 2 pages (the main page and the feedback page). MAIN PAGE --------- Should be password protected. It should be only accessible from me. I should be able to create a new record I should be able to edit, delete each line I should be able to generate a random url link (ex : https:/) in order to request a feedback. When I click on the button, a template email should be created : Dear I have applied through your company $agency for an opportunity for your client $client on the $date. I would appreciate to receive a feedback. May I ask you to provide a feedback (positive or negative) through the following link please ? If you did not receive any feedback yet,
As a growing Shopify store, I'm...management, and product sourcing. Ideal candidates should demonstrate previous experience in optimizing Shopify listings, providing stellar order customer service, and proven expertise in inventory and supplier management. - Website Management: In addition to store operations, managing the website is a vital part of this role. Duties include regular content updates, plugin installation, and configuration. A proficiency in WordPress or a similar CMS is a significant advantage, as is experience in installing and managing plugins efficiently. This role requires a meticulous attention to detail, an advanced understanding of the Shopify platform and strong organizational skills. Experience in eCommerce websites and their security is benefic...
I urgently need an expert who can fix my Bookly plugin issue in my WordPress 6.4.3 version. - You need to diagnose the glitch and rectify it as soon as possible. I can not make any chages to the services, or add staff members - The ideal freelancer should be experienced in troubleshooting WordPress plugin issues. - Although not mandatory, freelancers with past work or detailed project proposals will be highly preferred. - Your prompt assistance will be appreciated as I need to have this resolved ASAP. Skills Required: - WordPress - Plugin Troubleshooting - Bookly Plugin Knowledge - Quick Responsiveness.
The goal of this project is to create a highly functional and customizable plugin for Unreal Engine. This plugin will aid in capturing both the entire screen and selected application windows, along with specific sound devices. The data captured should then be outputted to RTMP in a format that includes both video and audio. Key Features the plugin should offer: - Capability to capture entire screen, selected application windows, and specific sound devices. - Output the captured data to RTMP as audio and video. - Possess a highly customizable user interface. Ideal skills and experience: - Proficiency in Unreal Engine and RTMP Streaming. - Proven ability to build audio/video capture tools. - Experience in creating UI for plugins. - Expertise in handling sound devices...
I'm currently dealing with a file (PHP and MySQL nested queries) that urgently needs to be resolved. - The content of that page takes a long time to load (sometimes i get a timeout error message, but not always). While the page is trying to load, the other pages of the website are not accessible (loading indefinitely until the problematic page has finished loading). I think we have to remove the nested loops and add some code to fetch complete data at once and then we can run the loops. Or the page has to be rewritten fully. The problem requires an experienced PHP and MySQL freelancer with strong diagnostic skills, who is not averse to confronting an undefined problem. For now please.
I'm looking for a programmer proficient in C# to create a simple sample code using Open XML SDK for generating a bullet list. The bullet style should be dots. See attached image for correct and incorrect result. Output is C# code. Payment: - 20% on project start. - 80% when code is ready and verified
...proficient in UISP (UniFi Network Controller Software) with a strong understanding of PHP, communication with MikroTik OS via API, and PPPoE protocols. The project entails creating a custom third-party module for UISP that integrates seamlessly with PHP and allows communication with MikroTik OS through its API. Key Requirements: 1. UISP Knowledge: The ideal candidate should possess in-depth knowledge of UISP (UniFi Network Controller Software) to develop a custom third-party module that aligns with its architecture and functionalities. 2. PHP Skills: Proficiency in PHP programming language is essential for the development of the module. The developer should be capable of writing clean, efficient, and maintainable PHP code. 3. Communication with Mik...
I'm in need of a skilled WordPress developer with significant knowledge and experience in plugin development and email configurations. This particular project revolves around: - Customizing a plugin to cater my need - Craft the plugin functionality to handle SMTP setup for Gmail What I expect from you: - Proficient in WordPress plugin development - Familiarity with email server configurations - Gmail SMTP setup expertise I look forward for a developer who can take on these responsibilities smoothly. Feel free to put your bids if your skill set matches the project requirements.
...Analysis Daily Trends Analysis Audience targeting Monitoring of music lists Video editor Royalty accounting software Neighbouring Rights Collection A promo delivery platform such as DMCA automated takedown Min. Requirements: - Must have experience with DDEX music supply chain and infrastructure - Experience with B2B DDEX implementation - Experience with technologies such as JSON/XML, AWS, NoSql, Python, Javascript - Familiar with MEAD standards provided by DDEX, Ruby on rails knowledge. Please only apply if you have build something like this before!...
I'm currently dealing with a file (PHP and MySQL nested queries) that urgently needs to be resolved. - The content of that page takes a long time to load (sometimes i get a timeout error message, but not always). While the page is trying to load, the other pages of the website are not accessible (loading indefinitely until the problematic page has finished loading). I think we have to remove the nested loops and add some code to fetch complete data at once and then we can run the loops. Or the page has to be rewritten fully. The problem requires an experienced PHP and MySQL freelancer with strong diagnostic skills, who is not averse to confronting an undefined problem. For now please.
I am looking to hire writers for my WordPress blog who excel in writing well-researched, SEO-optimized, unique articles with valid points. Please note that I don't want content generated through ChatGPT or any other AI platform. I prefer someone experienced with WordPress and using the Yoast SEO plugin. I am seeking writers who can create articles in their own words; rewriting other bloggers' points is not acceptable. The writer must have the ability to craft articles with a unique style in an SEO-friendly manner. My rate is Rs. 150 per 1000 words. If anyone is interested and can adhere to my rules and guidelines, kindly message me. Thanks and have a great day.
I am looking to hire writers for my WordPress blog who excel in writing well-researched, SEO-optimized, unique articles with valid points. Please note that I don't want content generated through ChatGPT or any other AI platform. I prefer someone experienced with WordPress and using the Yoast SEO plugin. I am seeking writers who can create articles in their own words; rewriting other bloggers' points is not acceptable. The writer must have the ability to craft articles with a unique style in an SEO-friendly manner. My rate is Rs. 150 per 1000 words. If anyone is interested and can adhere to my rules and guidelines, kindly message me. Thanks and have a great day.
I am working on GRR rapid response framework. Task is to deploy client and server mechanism with at least 3-4 machines on k8s platform, reusable, also. we can use aws if required. GRR server GUI is good and well supported to track all the clients. Setup will also include the output plugin to splunk or grafana for tracking like SIEM etc. We will take help of kubernetes goat to deploy the vulnerable pods. we can add few as well if required. High level would be like docker files, registry push, daemon sets client server set ups etc etc. Please go through the online documentations and do let me know to discuss further. we can finalise and effort and price, not an issue. thanks
With an existing project in place, I'm seeking an experienced developer who can enhance my job board functionality. Your tasks will include: - Integrating Jobg8 into our system - Optimizing Cost Per Click (CPC) - Developing a custom plugin. Relevant expertise in Jobg8 and CPC optimization is essential to this role. Knowledge in plugin development will bolster the efficiency and effectiveness of our current operational framework. You will be a part of a vital process to streamline our platform, making a significant impact on our overall user experience. Dont bid unless you have current experience with Jobg8 and CPC. Please provide proof of your work.
...with more details. 4. Need someone who can make sure that when photos are uploaded on backend, they don't look stretched on the front end. Images must be contained. 5. Automatic emails must be configured within Woocommerce / MailerLite 6. Front-end design is done, but a few other things left to polish. 7. Photos stamp with my logo on all pictures that are uploaded by customers (there's a free plugin that can be modified, but must be properly modified). 8. Making sure that when customer cancels paying for listing, the listing does not get removed from the site. However, it will have to indicate that the listing is in "Inactive" status and the Contact form be disabled from anyone having to fill it out from the front-end. 9. Testing phase - making sure cust...
I need a WordPress website built, preferably with website is for a new business that manufactures emergency fire helicopter equipment, they have one product they are releasing with more planned. I have the lifetime license of divi and they're releasing a big update (v5.0) in a month or two that makes it a lot faster & stable to use, so I think it's a good choice. You'll need to create a simple version of the site, more than a wireframe but it'll be less than the final version, as we don't have all the information / content from them yet, but we can at least get started. We will use ai generated images and content as filler and just do our best to come up with a "rough draft", and then fill it in as we get more content from them. For now,...
I will arrange to work at least 25 hours per week. If there are any sudden matters, I will notify in advance to request time off and will arrange to make up for it later.
... Keyskills required as below : - Strong exerience with desktop application development using python libraries/frameworks preferable wxpython . Experience in developing IDEs is more preferred. - Capable to convert graphical representation/language to c program translation(we will provide references of open source examples) - cross compiling C program for target hardware using IDE - knowledge of XML schemas - remote procedure calls in C - Networking - knowledge of embedded systems People who have strong experience in the above keys skill should only apply. I am not in a rush and am more concerned with the quality of the final product, so there's no strict deadline. However, progress updates would be appreciated. Note : person who show good performance and understanding wo...
