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var row = "word".split(""); | |
// splice modifies original array | |
function pull (row, i) { | |
var arr = []; | |
row.forEach(function (item, j) { | |
if (i!=j) arr.push(item); | |
}); | |
return arr; | |
} |
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var Bacon = require('baconjs'); | |
var Rx = require('rx'); | |
var Kefir = require('kefir'); | |
var EE = require('events').EventEmitter; | |
var ee = new EE; | |
var sum = function (prev, cur) {return prev+cur}; | |
Bacon.fromEvent(ee, 'event1').scan(0, sum).onValue(console.log); // 0, 4, 9 | |
Rx.Observable.fromEvent(ee, 'event1').reduce(sum, 0).subscribe(console.log); // doesn't work |
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let x = 1; | |
let sum = (a, b) => a + b + x | |
sum(1, 2); // 4 | |
x = 2; | |
sum(1, 2); // 5 |
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var schemaLoaded = kefir.fromEvents(app, 'server:schema').take(1); | |
var serverListening = kefir.fromEvents(app, 'server:running').take(1); | |
return kefir.merge([schemaLoaded, serverListening]).toPromise(); |
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/** | |
* @param val {*} | |
* @returns {Boolean} | |
*/ | |
function isNothing(val) { | |
return val === undefined || val === null; | |
} | |
/** | |
* @param val {*} | |
* @return {Number} |
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const http = require('http'); | |
// Swagger-like API description | |
const api = { | |
'/users': { | |
'get': { | |
'parameters': { | |
'role': { | |
'in': 'query' | |
}, |
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app.post((req, res) => { | |
const user = db.getUserByName(req.headers.name); | |
const user = db.getUserByName(req.query.name); | |
const user = db.getUserByName(req.path.name); | |
const user = db.getUserByName(req.body.name); | |
}); |
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factorial 0 = 1 | |
factorial n = n * factorial (n — 1) |
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class ZeroValue extends Error {} | |
class OtherValue extends Error {} | |
function resolveValue(val) { | |
return Promise.resolve().then(() => { | |
if (!val) throw new ZeroValue(); | |
throw new OtherValue(val); | |
}); | |
} |
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#!/usr/bin/env bash | |
TAG="kafka-brokers-demo" | |
sudo yum install -y jq | |
sudo yum install -y wget | |
sudo yum install -y java | |
cd ~ | |
wget "http://archive.apache.org/dist/kafka/2.1.0/kafka_2.11-2.1.0.tgz" | |
tar -xvf kafka_2.11-2.1.0.tgz |
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