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/**
 * This delay function returns a Promise which will fullfill when the timer goes off
 */
export default function delay(fn, duration) {
  return new Promise(resolve => setTimeout(() => { fn(); resolve()}), duration)
}

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04c0c0e476bd9f08980c6451372e78fa3accea476a6206b2219c3fe67fdf1bebdf0c7827f93e7f864f7ef778f83f053bb08c790977cc632cb81e987f6121cfe7a5

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registry=https://registry.npm.taobao.org
sass_binary_site=https://npm.taobao.org/mirrors/node-sass/
phantomjs_cdnurl=http://cdn.npm.taobao.org/dist/phantomjs
electron_mirror=http://cdn.npm.taobao.org/dist/electron/

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const url = 'ws://localhost:1234'
let ws = new WebSocket(url,'test_protocol') 
ws.onopen = () => {
  console.log('Client connection opened')
  ws.send('Hello Websocket')
}

ws.onmessage = (event) => {
  console.log('Received message : '+ event.data)
}

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public String triangleGenerator(int num, char letter ){
    if(num%2==0){
        num++
    }
//     int num = 21; // input num (assume odd)
//     char letter = 'A'; // input char

    int rows = (num+1)/2; // the amount of rows
    String result = "";
    int rowIdx = 1; // assume the idx of first row is 1