The way to check the color and coreponding value pairs in ggplot2 To see what colors are used to make your plot you can use function ggplot_build() and then look at data part of this object (in column colour are codes). p <- ggplot(df, aes(x = value,…
17.2 Design an algorithm to figure out if someone has won a game oftic-tac-toe. 这道题让我们判断玩家是否能赢井字棋游戏,有下面几点需要考虑: 1. 判断是否能赢hasWon函数是调用一次还是多次,如果是多次,我们可能为了优化而需要加入一些预处理. 2. 井字棋游戏通常是3x3的大小,我们是否想要实现NxN的大小? 3. 我们需要在代码紧凑,执行速度和代码清晰之间做出选择. #include <iostream> #…
http://robots.thoughtbot.com/designing-for-ios-graphics-performance [原文] In the previous article, we explored different techniques to customize the look and feel of UIButton, assigning to each a difficulty level based on the complexity of the Object…
I’m sure you all know that it’s possible to create plugins and extend various aspects of the jQuery JavaScript library but did you know you could also extend the capabilities of it’s selector engine? Well, you can! For example, you might want to add…
The application is simple, to build a color picker: When click the rect box, it will check the color value below and title color will also change. color-picker.ts: import {Component, Output, EventEmitter, Input} from "@angular/core"; import {RED…