John Marinelli johnmarinelli

distinct column -> For each row returned, return only the unique members of a set. Think of it as for each row in a projection, concatenate all the column values and return only the strings that are unique.

test_db=# SELECT DISTINCT parent_id, child_id, id FROM test.foo_table ORDER BY parent_id, child_id, id LIMIT 10;
parent_id | child_id | id
-----------+------------+-----------------------------
1000040 | 103 | 1000040|2645405726|0001|103

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

React (Virtual) DOM Terminology

In React's terminology, there are five core types that are important to distinguish:

ReactElement / ReactElement Factory
ReactNode
ReactComponent / ReactComponent Class

React Elements

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

Business Models

Advertising

Models	Examples
Display ads	Yahoo!
Search ads	Google

	var cameraZ = camera.position.z;
	var planeZ = 5;
	var distance = cameraZ - planeZ;
	var aspect = viewWidth / viewHeight;
	var vFov = camera.fov * Math.PI / 180;
	var planeHeightAtDistance = 2 * Math.tan(vFov / 2) * distance;
	var planeWidthAtDistance = planeHeightAtDistance * aspect;

	// or

	import _ from 'lodash'
	import { Dimensions, PixelRatio } from 'react-native'
	import { platformIsIos } from 'expresso-common/common/platform'

	const { height } = Dimensions.get('window')
	const iphone6Height = 667
	const pixelRatio = PixelRatio.get()
	const fieldsToNormalize = [
	'fontSize',
	'lineHeight',

	/**
	* A linear interpolator for hexadecimal colors
	* @param {String} a
	* @param {String} b
	* @param {Number} amount
	* @example
	* // returns #7F7F7F
	* lerpColor('#000000', '#ffffff', 0.5)
	* @returns {String}
	*/

	#include <stdio.h>
	#include <stdint.h>

	class A {
	public:
	virtual void doThing() {
	printf("I'm an A\n");
	}
	};