command | description |
---|---|
ctrl + a | Goto BEGINNING of command line |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# SGR color constants | |
# rene-d 2018 | |
class Colors: | |
""" ANSI color codes """ | |
BLACK = "\033[0;30m" | |
RED = "\033[0;31m" | |
GREEN = "\033[0;32m" | |
BROWN = "\033[0;33m" | |
BLUE = "\033[0;34m" |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// Base64 encode | |
val text = "This is plaintext." | |
val bytesEncoded = java.util.Base64.getEncoder.encode(text.getBytes()) | |
// Base64 decode | |
val textDecoded = new String(java.util.Base64.getDecoder.decode(bytesEncoded)) | |
println(textDecoded) |
NOTE: This is a question I found on StackOverflow which I’ve archived here, because the answer is so effing phenomenal.
If you are not into long explanations, see [Paolo Bergantino’s answer][2].
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package sandbox; | |
import java.lang.reflect.Field; | |
import java.lang.reflect.Modifier; | |
public class MainSandBox { | |
public static void main(String[] args) throws Exception { | |
Example ex = new Example(); | |
// Change private modifier to public | |
Field f = ex.getClass().getDeclaredField("id"); |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/** | |
* A tiny class that extends a list with four combinatorial operations: | |
* ''combinations'', ''subsets'', ''permutations'', ''variations''. | |
* | |
* You can find all the ideas behind this code at blog-post: | |
* | |
* http://vkostyukov.ru/posts/combinatorial-algorithms-in-scala/ | |
* | |
* How to use this class. | |
* |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Pouring(capacity: Vector[Int]) { | |
// States | |
type State = Vector[Int] | |
val initialState = capacity map (x => 0) | |
// Moves | |
trait Move { | |
// A method that defines state changes | |
def change(state: State): State |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package org.tempura.console.util; | |
import java.util.ArrayList; | |
import java.util.Collections; | |
import java.util.List; | |
/** | |
* Usage: | |
* <li>String msg = Ansi.Red.and(Ansi.BgYellow).format("Hello %s", name)</li> | |
* <li>String msg = Ansi.Blink.colorize("BOOM!")</li> |