robindanielk robindanielk

npm v3.10 - ◾

⚠️ This gist is outdated, but most of the commands are still relevant. ⚠️

Update npm itself

npm install -g npm
# Downgrade to a specific version
npm install -g npm@6

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

All hex value from 100% to 0% alpha:

Source: StackOverflow

Question: How do I save Bitmap to extrenal storage in Android?

Answer:

Use this function to save your bitmap in SD card:

public void saveTempBitmap(Bitmap bitmap) {
        if (isExternalStorageWritable()) {

A composable pattern for pure state machines with effects

State machines are everywhere in interactive systems, but they're rarely defined clearly and explicitly. Given some big blob of code including implicit state machines, which transitions are possible and under what conditions? What effects take place on what transitions?

There are existing design patterns for state machines, but all the patterns I've seen complect side effects with the structure of the state machine itself. Instances of these patterns are difficult to test without mocking, and they end up with more dependencies. Worse, the classic patterns compose poorly: hierarchical state machines are typically not straightforward extensions. The functional programming world has solutions, but they don't transpose neatly enough to be broadly usable in mainstream languages.

Here I present a composable pattern for pure state machiness with effects,

This is an old way to Upload an Image from camera or gallery in WebView. It was made a long time ago and is not maintened anymore. Use it at your own risk.

Don't expose `MutableLiveData`

Example from Android Jetpack: LiveData

MutableLiveData Example

Fun with LiveData (Android Dev Summit '18)

VSCode Shortcuts

List of helpful shortcuts for faster coding

If you have any other helpful shortcuts, feel free to add in the comments of this gist :)

Official List of all commands

Windows
Mac

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD


	0 = Success
	1 = Operation not permitted
	2 = No such file or directory
	3 = No such process
	4 = Interrupted system call
	5 = Input/output error
	6 = No such device or address
	7 = Argument list too long
	8 = Exec format error

	Hi All!

	I've recently launched a tool that wraps many of the commands here with a user interface. This desktop application is currently available for macOS. There's a roadmap outlining planned features for the near future.
	Feel free to request any features you'd like to see, and I'll prioritize them accordingly.
	One of the most important aspects of this application is that every command executed behind the scenes is displayed in a special log section. This allows you to see exactly what’s happening and learn from it.

	Here's the link to the repository: https://github.com/Pulimet/ADBugger

	App Description:
	ADBugger is a desktop tool designed for debugging and QA of Android devices and emulators. It simplifies testing, debugging, and performance analysis by offering device management, automated testing, log analysis, and remote control capabilities. This ensures smooth app performance across various setups.