Sampling Profiler

SamplingProfiler is a performance profiling tool for Delphi 5 to 32bits Delphi XE4. Its purpose is to help locate bottlenecks, even in final, optimized code running at full-speed. View original...

Making your web app work offline, Part 2: The Implementation

This two-part series is a gentle, high-level introduction to offline web development. In Part 1 we got a basic service worker running, which caches our application resources. Now let's extend it to support offline. View original...

await vs return vs return await

When writing async functions, there are differences between await vs return vs return await, and picking the right one is important. This returns a promise that waits a second, then has a 50/50 chance of fulfilling with "yay" or rejecting with an error. [mgamazon...

Google wants Progressive Web Apps to replace Chrome apps

The Chrome Web Store originally launched in 2010, and serves a hub for installing apps, extensions, and themes packaged for Chrome. Over a year ago, Google announced that it would phase out Chrome apps on Windows, Mac, and Linux in 2018. View...

Google wants Progressive Web Apps to replace Chrome apps

The Chrome Web Store originally launched in 2010, and serves a hub for installing apps, extensions, and themes packaged for Chrome. Over a year ago, Google announced that it would phase out Chrome apps on Windows, Mac, and Linux in 2018. View...

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Over 4,300+ DOS games that can be played online

Play DOS Games Online was setup for preservation of 4,300+ old retro abandonware games and abandoned OS/interfaces that you can play online right in your web browser for education and research purposes. View original...

Debugging React performance with React 16 and Chrome Devtools.

React was one of the first major front-end frameworks to not only name, but tout it’s rendering performance. React’s virtual dom is famous for efficiently rendering components—but what happens when those components suddenly don’t feel fast anymore? Where do you look?...

Learn electron js framework for free

Upcoming SlideShare Loading in …5 × Learn electron js framework for free 1. Learn Electron Beginners Guide to Electron Framework 2. View original...

Thoughts on MySQL 8.0’s Invisible Indexes

MySQL 8.0 has a new feature called “invisible indexes,” which allow you to quickly enable/disable indexes from being used by the MySQL Optimizer. There are a couple of use cases. One of them is if you want to drop an index, but want to know the effect beforehand....

Sampling Profiler

SamplingProfiler is a performance profiling tool for Delphi 5 to 32bits Delphi XE4. Its purpose is to help locate bottlenecks, even in final, optimized code running at full-speed. View original...

await vs return vs return await

When writing async functions, there are differences between await vs return vs return await, and picking the right one is important. This returns a promise that waits a second, then has a 50/50 chance of fulfilling with "yay" or rejecting with an error. [mgamazon...

Google wants Progressive Web Apps to replace Chrome apps

The Chrome Web Store originally launched in 2010, and serves a hub for installing apps, extensions, and themes packaged for Chrome. Over a year ago, Google announced that it would phase out Chrome apps on Windows, Mac, and Linux in 2018. View...

Google wants Progressive Web Apps to replace Chrome apps

The Chrome Web Store originally launched in 2010, and serves a hub for installing apps, extensions, and themes packaged for Chrome. Over a year ago, Google announced that it would phase out Chrome apps on Windows, Mac, and Linux in 2018. View...

Over 4,300+ DOS games that can be played online

Play DOS Games Online was setup for preservation of 4,300+ old retro abandonware games and abandoned OS/interfaces that you can play online right in your web browser for education and research purposes. View original...

Debugging React performance with React 16 and Chrome Devtools.

React was one of the first major front-end frameworks to not only name, but tout it’s rendering performance. React’s virtual dom is famous for efficiently rendering components—but what happens when those components suddenly don’t feel fast anymore? Where do you look?...

Learn electron js framework for free

Upcoming SlideShare Loading in …5 × Learn electron js framework for free 1. Learn Electron Beginners Guide to Electron Framework 2. View original...

Thoughts on MySQL 8.0’s Invisible Indexes

MySQL 8.0 has a new feature called “invisible indexes,” which allow you to quickly enable/disable indexes from being used by the MySQL Optimizer. There are a couple of use cases. One of them is if you want to drop an index, but want to know the effect beforehand....

9 Best JavaScript Charting Libraries — DashBouquet

For you to be reading this, it surely would be no news that data visualization has become a very critical part of the IT world today. The huge amount of data being generated by different web technologies need to be properly refined and visualized for the world to use...

C# 7.1, 7.2 and 8 – New and Upcoming Features

With Visual Studio 2017, Microsoft increased the release cadence for C#. Between the major versions, which were historically aligned with new Visual Studio versions, they started to release minor versions as part of selected Visual Studio 2017 updates. [mgamazon...

ISO 8601 Week number in PHP, MySQL and MSSQL

The following methods calculate the ISO 8601 Week number in PHP, MySQL and Microsoft SQL Server, with the same exact results. All the examples below are using the same week criteria: week stars on Monday. MySQL is easy, as it supports this directly: SELECT...

Centos 6, running PHP7 alongside stock PHP5

I have a couple of servers running PHP 5.x.x on CentOS 6 and i want to migrate some to PHP7, without worrying about the older stuff. So, i could compile PHP7 from source, setup FPM and Opcache for it, etc, etc, but i found out that REMI as a solution for this...

One Keyboard+Mouse, multiple computers, the Microsoft way

From Microsoft Garage, the new "Mouse without Borders" - it supports also keyboard, clipboard and file drag and drop. Its an alternative to Synergy, Input Director and similar solutions. I'll give it a try later. Download it...

Setup Lighthouse, CentOS, 3 simple steps

Lighthouse analyzes web apps and web pages, collecting modern performance metrics and insights on developer best practices. Here is a simple 3 step setup guide for CentOS: Setup the EPEL yum repository install nodejs and npm using YUM Run npm install -g lighthouse And...

SystemD quick cheat sheet

A small collection of Systemd commands, along with the Sysvinit counterparts. Sysvinit Command Systemd Command Notes service frobozz start systemctl start frobozz Used to start a service (not reboot persistent) service frobozz stop systemctl stop frobozz Used to stop...

NativeScript example, step by step, Windows 10

A tiny, 5 minute, tutorial on creating a new empty project using NativeScript + TypeScript, compiling it and running in Android. First of all, install NativeScript (NodeJS v4.6.0 x64)plus the latest NativeScript. Check if the installation is OK: tns...

Converting multi-page PDF to PNG using ImageMagick

Quick tutorial on converting PDF files to PNG using ImageMagick in CentOS. Foreplay: install ImageMagick First, install ImageMagick using yum. As ImageMagick is not available, you need to activate the EPEL repository in your CentOS installation. wget...

Web font generator

At fontSquirrel. You upload your font and it generates every known format, CSS code and even embeds fonts inside CSS using base64 data.

Public Datasets

Available at Xiaming's Github, Awesome Public Datasets are (mostly) free. Subjects include Agriculture, Biology, Climate/Weather, Complex Networks, Computer Networks, Contextual Data, Data Challenges, Economics, Energy, Finance, Geology, GeoSpace/GIS, Government,...

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