ahlusar1989

# -*- coding: utf-8 -*-
""" Small script that shows hot to do one hot encoding
    of categorical columns in a pandas DataFrame.

    See:
    http://scikit-learn.org/dev/modules/generated/sklearn.preprocessing.OneHotEncoder.html#sklearn.preprocessing.OneHotEncoder
    http://scikit-learn.org/dev/modules/generated/sklearn.feature_extraction.DictVectorizer.html
"""
import pandas
import random

ahlusar1989

angular.module('stateMock',[]);
angular.module('stateMock').service("$state", function($q){
    this.expectedTransitions = [];
    this.transitionTo = function(stateName){
        if(this.expectedTransitions.length > 0){
            var expectedState = this.expectedTransitions.shift();
            if(expectedState !== stateName){
                throw Error("Expected transition to state: " + expectedState + " but transitioned to " + stateName );
            }
        }else{

ahlusar1989

import unittest

def foo(x, y, z):
    return (x != y and x != z or x and z)

def get_test_args():
    x = y = z = [True, False]
    from itertools import product, repeat
    # for each input arg ---> expected arg
    input_args = list(product(x, y, z))

koistya

[
  {
    "title": "How to handle state in React. The missing FAQ.",
    "author": "Osmel Mora",
    "url": "https://medium.com/react-ecosystem/how-to-handle-state-in-react-6f2d3cd73a0c"
  },
  {
    "title": "You might not need React Router",
    "author": "Konstantin Tarkus",
    "url": "https://medium.freecodecamp.com/you-might-not-need-react-router-38673620f3d"

wffurr

"""
Implement a queue with two stacks

Interview practice from coding for interviews - March 2014
"""

class Staqueue(object):
    """ Implements a queue with two stacks 

    One stack is used for enqueing, and the other dequeing.  If an enqueue is requested

karmadude

Contours of San Francisco overlayed over OpenStreeMap vector tiles using code from mbostock's vector tiles with multiple layers example. View the hi-res file

See gist for code used to generate contours.

addyosmani

// Flyweight.js - Copyright Addy Osmani, 2012.
// Consider public domain
// My implementation in JS of this:
// http://en.wikipedia.org/wiki/Flyweight_pattern

// Simulate pure virtual inheritance/'implement' keyword for JS
Function.prototype.implementsFor = function (parentClassOrObject) {
    if (parentClassOrObject.constructor == Function) {
        // Normal Inheritance 
        this.prototype = new parentClassOrObject;

vasanthk

How to style React components

If you use sass and css-modules and want to restyle some base component without changing its code. (base component already use css-modules and exposes styles property)

I know two way how to do it.

1. Using composes css-modules operator. Just extend classes you need, then in javascript code combine both styles as {...baseStyle, ...myStyleSimple}

sadikovi

import java.util.HashMap

class Node[K, V](var key: K, var value: V) {
  var next: Node[K, V] = null
  override def toString(): String = s"Node($key, $value) -> $next"
}

class LRUCache[K, V](val size: Int = 5) {
  require(size > 0, s"Expected size > 0, found $size")
  val map = new HashMap[K, Node[K, V]]()

tmpvar

var isLeft = function(p1, p2, p3) {
  return (p2.position[0] - p1.position[0])*(p3.position[1] - p1.position[1]) - (p3.position[0] - p1.position[0])*(p2.position[1] - p1.position[1]);
};

// chainHull_2D(): Andrew's monotone chain 2D convex hull algorithm
// see: http://en.wikibooks.org/wiki/Algorithm_Implementation/Geometry/Convex_hull/Monotone_chain
//     Input:  P[] = an array of 2D points
//                   presorted by increasing x- and y-coordinates
//             n = the number of points in P[]
//     Output: H[] = an array of the convex hull vertices (max is n)