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Check if a JavaScript string is a URL
...vm=bv.65177938,d.aWc&psig=AFQjCNEpBfKnal9kU7Zu4n7RnEt2nerN4g&ust=1398298682009707
– bill davis
Apr 23 '14 at 0:23
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How to connect android emulator to the internet
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VaughnVaughn
2,98011 gold badge1313 silver badges22 bronze badges
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When should you not use virtual destructors?
...o not declare a virtual destructor for a class? When should you specifically avoid writing one?
12 Answers
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How to replace local branch with remote branch entirely in Git?
...contents of master. So if you're on e.g. a feature-branch, it will replace all its commits with master, so make sure you've checked out the branch you're replacing first.
– Zoltán
Jul 15 '16 at 8:29
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How to automatically generate N “distinct” colors?
I wrote the two methods below to automatically select N distinct colors. It works by defining a piecewise linear function on the RGB cube. The benefit of this is you can also get a progressive scale if that's what you want, but when N gets large the colors can start to look similar. I can also imagi...
How to repeat a “block” in a django template
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Aaron MaenpaaAaron Maenpaa
98.1k1010 gold badges9191 silver badges106106 bronze badges
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PHP calculate age
.../yyyy format; or it can be in other formats as well
$birthDate = "12/17/1983";
//explode the date to get month, day and year
$birthDate = explode("/", $birthDate);
//get age from date or birthdate
$age = (date("md", date("U", mktime(0, 0, 0, $birthDate[0], $birthDate[1], $birthDate[2]))) &...
How to generate unique ID with node.js
...(16).toString("hex");
console.log(id); // => f9b327e70bbcf42494ccb28b2d98e00e
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What is the most efficient string concatenation method in python?
... idiomatic and thus easier for other python programmers to understand.
Finally, the golden rule of optimization: don't optimize unless you know you need to, and measure rather than guessing.
You can measure different methods using the timeit module. That can tell you which is fastest, instead of r...
数据存储组件 · App Inventor 2 中文网
...号、列号都从 1 开始；读出的单元格一律是文本（数字 98 读出来是 "98"，空单元格是空文本）。
写入时数字积木写成数值，文本积木写成文本（手机号用文本输入框的内容写入，不会变成科学计数法）。
使用指导WPS在线表格...