webmaster128

Support for Cosmos SDK Stargate in CosmJS has been ongoing work for several months now. Stargate is released and CosmJS is here to connect to it.

Starting points

Let's explore what is new for Stargate support:

• @cosmjs/proto-signing, which implements the new SIGN_MODE_DIRECT based on protobuf serializations
• @cosmjs/stargate, which provides a high level client for querying, signing and broadcasting
• @cosmjs/cosmwasm-stargate for interacting with CosmWasm smart contracts on Stargate chains

nakov

import org.bouncycastle.util.encoders.Hex;
import org.web3j.crypto.*;
import java.math.BigInteger;

public class ECCExample {

    public static String compressPubKey(BigInteger pubKey) {
        String pubKeyYPrefix = pubKey.testBit(0) ? "03" : "02";
        String pubKeyHex = pubKey.toString(16);
        String pubKeyX = pubKeyHex.substring(0, 64);

darkstone

val rivateKey = privateKeyAsText
        .replace("-----BEGIN PRIVATE KEY-----\n", "")
        .replace("-----END PRIVATE KEY-----", "")
        .replace("\n", "")
        .let {
            val encodedKey = Base64.getDecoder().decode(it)
            val kf = KeyFactory.getInstance("RSA")
            val keySpec = PKCS8EncodedKeySpec(encodedKey)
            kf.generatePrivate(keySpec) as RSAPrivateKey
        }

bradwestfall

S3 Static Sites

⚠ This post is fairly old. I don't keep it up to date. Be sure to see comments where some people have posted updates

What this will cover

• Host a static website at S3
• Redirect www.website.com to website.com
• Website can be an SPA (requiring all requests to return index.html)
• Free AWS SSL certs
• Deployment with CDN invalidation

alexhayes

Awesomely easy virtualenvs on OSX using pyenv and direnv

Never forget to activate that virtualenv or set that environment variable ever again...

Install

1. Install pyenv

    brew install pyenv
   

serithemage

AWS 학습 링크집 시리즈

• AWS 트레이닝 및 자격증 소개 http://bit.ly/aws-tnc-intro
• AWS 학습 자료집 http://bit.ly/aws-study-resource
• AWS 공인 솔루션스 아키텍트 - 어소시에이트 수험 가이드 http://bit.ly/sacertguide
• AWS 공인 개발자 - 어소시에이트 수험 가이드 http://bit.ly/devcertguide
• AWS 보안 관련 컨텐츠 모음집 http://bit.ly/secontents
• AWS 기반 빅데이터 학습자료집 http://bit.ly/bdonaws
• AWS 딥러닝 학습 자료 모음집 http://bit.ly/dlonaws
• AWS The Machine Learning pipeline on AWS 교육 학습 자료집 http://bit.ly/ml-pipeline

barbietunnie

How to download your Udemy course videos using youtube-dl

$ youtube-dl --list-extractors | grep udemy

Steps

1. Get link to the course to download. e.g. https://www.udemy.com/course-name/
2. Login into udemy website, save the cookie from chrome using Chrome (Cookie.txt)[1] export extension. Save it to file udemy-cookies.txt
3. Get the link of the video that you want to download. usually in format. Use the command provided below where you have to replace the {course_link} and {path_to_cookies_file} with respective paths.

$ youtube-dl {course_link} --cookies {path_to_cookies_file}

hassy

//
// Lambda's timeout needs to be >5 seconds, 10 should do
//

var startedAt = new Date();

var interval = setInterval(function () {
    console.log(startedAt, new Date());
}, 1000);

jihunleekr

/**
 * 숫자를 한글발음대로 표기
 * 구글 스프레드시트에서는 아래의 함수가 없어서 구현함.
 * 한글만 지원. (원래 함수는 한자 등의 다양한 타입을 지원함)
 */
function numberstring(num) { 
    
  var namesInSeat = ['', '일', '이', '삼', '사', '오', '육', '칠', '팔', '구'],
      namesInSeats = ['', '십', '백', '천'],
      namesInFourSeat = ['', '만', '억', '조'],

benelog

안드로이드 개발에서 많은 비중을 차지하는 UI패턴은 ListView에서 여러 이미지를 보여주는 Activity입니다. 전형적인 흐름을 정리하면 아래와 같습니다.

​1. 목록조회 API호출

​2. API를 파싱하고 ListView에 데이터를 보여 줌.

​3. 각 아이템마다의 이미지 주소로 다시 서버를 호출

​4. 이미지를 디코딩하고 ImageView에서 보여줌.