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Pick a random value from an enum?
...otlin Solution
MyEnum.values().random()
random() is a default extension function included in base Kotlin on the Collection object. Kotlin Documentation Link
If you'd like to simplify it with an extension function, try this:
inline fun <reified T : Enum<T>> random(): T = enumValues&l...
How can I make a clickable link in an NSAttributedString?
...g the pressed link when you touch down for touch feedback. Please refer to https://github.com/null09264/FRHyperLabel.
In your case, the code may like this:
FRHyperLabel *label = [FRHyperLabel new];
NSString *string = @"This morph was generated with Face Dancer, Click to view in the app store.";
...
Sending emails with Javascript
...
You can use this free service: https://www.smtpjs.com
Include the script:
<script src="https://smtpjs.com/v2/smtp.js"></script>
Send an email using:
Email.send(
"from@you.com",
"to@them.com",
"This is a subject",
"this is the b...
Standardize data columns in R
...scale"))
newData <- predict(preObj, data[, -10])
More details: http://www.inside-r.org/node/86978
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How to get the anchor from the URL using jQuery?
...
If you have a string with an URL/hash, the easiest method is:
var url = 'https://www.stackoverflow.com/questions/123/abc#10076097';
var hash = url.split('#').pop();
If you're using jQuery, use this:
var hash = $(location).attr('hash');
...
TCP 的那些事儿（上） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Sequence Number
下图是我从Wireshark中截了个我在访问coolshell.cn时的有数据传输的图给你看一下，SeqNum是怎么变的。（使用Wireshark菜单中的Statistics ->Flow Graph… ）
你可以看到，SeqNum的增加是和传输的字节数相关的。上图中，...
Include an SVG (hosted on GitHub) in MarkDown
...he working example on github.com.
Linking to RAW files
Code
<img src="https://raw.github.com/potherca-blog/StackOverflow/master/question.13...
How to find time complexity of an algorithm
...
This is an excellent article :
http://www.daniweb.com/software-development/computer-science/threads/13488/time-complexity-of-algorithm
The below answer is copied from above (in case the excellent link goes bust)
The most common metric for calculating time compl...
Basic HTTP authentication with Node and Express 4
...Express then you can use the express-basic-auth middleware.
See the docs:
https://www.npmjs.com/package/express-basic-auth
Example:
const app = require('express')();
const basicAuth = require('express-basic-auth');
app.use(basicAuth({
users: { admin: 'supersecret123' },
challenge: true /...
Identify if a string is a number
...
int n;
bool isNumeric = int.TryParse("123", out n);
Update As of C# 7:
var isNumeric = int.TryParse("123", out int n);
or if you don't need the number you can discard the out parameter
var isNumeric = int.TryParse("123", out _);
The var s can be replaced ...