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@neuro-sys
neuro-sys / BCD.java
Last active May 15, 2024 12:11
BCD Conversion in java
/*
* Copyright 2010 Firat Salgur
* Improved by Abdallah Abdelazim
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
@iamnewton
iamnewton / bash-colors.md
Last active July 10, 2024 19:49
The entire table of ANSI color codes.

Regular Colors

Value Color
\e[0;30m Black
\e[0;31m Red
\e[0;32m Green
\e[0;33m Yellow
\e[0;34m Blue
\e[0;35m Purple
@Kartones
Kartones / postgres-cheatsheet.md
Last active July 23, 2024 09:14
PostgreSQL command line cheatsheet

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

  • -E: will describe the underlaying queries of the \ commands (cool for learning!)
  • -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)
@msrose
msrose / combining-git-repositories.md
Last active July 8, 2024 16:41
How to combine two git repositories.

Combining two git repositories

Use case: You have repository A with remote location rA, and repository B (which may or may not have remote location rB). You want to do one of two things:

  • preserve all commits of both repositories, but replace everything from A with the contents of B, and use rA as your remote location
  • actually combine the two repositories, as if they are two branches that you want to merge, using rA as the remote location

NB: Check out git subtree/git submodule and this Stack Overflow question before going through the steps below. This gist is just a record of how I solved this problem on my own one day.

Before starting, make sure your local and remote repositories are up-to-date with all changes you need. The following steps use the general idea of changing the remote origin and renaming the local master branch of one of the repos in order to combine the two master branches.

@HughJeffner
HughJeffner / Updater.java
Last active April 23, 2019 03:44
Android self-updating app
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
@lsurvila
lsurvila / DownloadFileWithRetrofit2RxJava.java
Last active December 22, 2021 15:36
Download file with Retrofit 2, OkHttp, Okio and RxJava
import com.squareup.okhttp.ResponseBody;
import okio.BufferedSink;
import okio.Okio;
import retrofit.Response;
import retrofit.http.GET;
import retrofit.http.Query;
import rx.Observable;
interface ApiService {
@HughJeffner
HughJeffner / CompositeX509TrustManager.java
Last active June 9, 2022 21:01
Trust both system KeyStore and custom KeyStore on Android
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import java.util.List;
@lopspower
lopspower / README.md
Last active July 24, 2024 11:39
Hexadecimal color code for transparency

Hexadecimal color code for transparency

Twitter

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.

Download This sample on Google Play Store

package co.ortatech.showandhide.ui.activity;
import android.app.Activity;
import android.app.Instrumentation;
import android.content.Intent;
import android.net.Uri;
import android.support.test.InstrumentationRegistry;
import android.support.test.espresso.intent.Intents;
import android.support.test.espresso.intent.rule.IntentsTestRule;
import android.support.test.runner.AndroidJUnit4;
@paraya3636
paraya3636 / KotlinAndroidMainApplication
Last active July 20, 2024 03:28
Kotlin Android MainApplication class for global applicationContext.
// Not object class. AndroidManifest.xml error happen.
class MainApplication : Application() {
init {
instance = this
}
companion object {
private var instance: MainApplication? = null