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@sam016
sam016 / AllGattCharacteristics.java
Last active June 18, 2024 07:07
Bluetooth GATT Services & Characteristics
package com.sam016.vsflatomation.service.ble;
import java.util.HashMap;
import java.util.UUID;
public class AllGattCharacteristics {
private static HashMap<String, String> attributes = new HashMap();
static {
attributes.put("00002a00-0000-1000-8000-00805f9b34fb", "Device Name");
@webframp
webframp / keybase.md
Created July 25, 2017 18:14
Signing git commits on github using keybase.io gpg key

Probably one of the easiest things you'll ever do with gpg

Install Keybase: https://keybase.io/download and Ensure the keybase cli is in your PATH

First get the public key

keybase pgp export | gpg --import

Next get the private key

@dlimpid
dlimpid / string-md5.kt
Created July 7, 2017 09:34
Get MD5 hash of the string (of length 32, with leading zeros) in Kotlin
import java.math.BigInteger
import java.security.MessageDigest
fun String.md5(): String {
val md = MessageDigest.getInstance("MD5")
return BigInteger(1, md.digest(toByteArray())).toString(16).padStart(32, '0')
}
class View {
void show() {
print("View.show()");
}
}
class Screen {
interface Nameable {
var name: String
}
class JackName : Nameable {
override var name: String = "Jack"
}
class LongDistanceRunner: Runnable {
override fun run() {
@alopresto
alopresto / gpg_git_signing.md
Last active January 18, 2024 22:42
Steps to enable GPG signing of git commits.

If anyone is interested in setting up their system to automatically (or manually) sign their git commits with their GPG key, here are the steps:

  1. Generate and add your key to GitHub
  2. $ git config --global commit.gpgsign true ([OPTIONAL] every commit will now be signed)
  3. $ git config --global user.signingkey ABCDEF01 (where ABCDEF01 is the fingerprint of the key to use)
  4. $ git config --global alias.logs "log --show-signature" (now available as $ git logs)
  5. $ git config --global alias.cis "commit -S" (optional if global signing is false)
  6. $ echo "Some content" >> example.txt
  7. $ git add example.txt
  8. $ git cis -m "This commit is signed by a GPG key." (regular commit will work if global signing is enabled)
@axic
axic / ecverify.sol
Last active May 13, 2024 12:07
Ethereum ECVerify
//
// The new assembly support in Solidity makes writing helpers easy.
// Many have complained how complex it is to use `ecrecover`, especially in conjunction
// with the `eth_sign` RPC call. Here is a helper, which makes that a matter of a single call.
//
// Sample input parameters:
// (with v=0)
// "0x47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad",
// "0xaca7da997ad177f040240cdccf6905b71ab16b74434388c3a72f34fd25d6439346b2bac274ff29b48b3ea6e2d04c1336eaceafda3c53ab483fc3ff12fac3ebf200",
// "0x0e5cb767cce09a7f3ca594df118aa519be5e2b5a"
@alex-shpak
alex-shpak / Interceptor.java
Last active June 14, 2024 02:40
Refreshing OAuth token with okhttp interceptors. All requests will wait until token refresh finished, and then will continue with the new token.
private class HttpInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
//Build new request
Request.Builder builder = request.newBuilder();
builder.header("Accept", "application/json"); //if necessary, say to consume JSON
@chrisbanes
chrisbanes / SystemUiHelper.java
Last active March 2, 2024 18:57
SystemUiHelper
/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software