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efficient circular buffer?
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Based on MoonCactus's answer, here is a circularlist class. The difference with his version is that here c[0] will always give the oldest-appended element, c[-1] the latest-appended element, c[-2] the penultimate... This is ...
Encrypt Password in Configuration Files? [closed]
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A simple way of doing this is to use Password Based Encryption in Java. This allows you to encrypt and decrypt a text by using a password.
This basically means initializing a javax.crypto.Cipher with algorithm "AES/CBC/PKCS5Padding" and getting a key from javax.crypto.S...
RegEx for Javascript to allow only alphanumeric
...([a-zA-Z0-9]+)$');
$scope.testResult = pattern.test($scope.str);
PLUNKER DEMO
Refered:Regular expression for alphanumeric in Angularjs
Using node.js as a simple web server
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A more full example that ensures requests can't access files underneath a base-directory, and does proper error handling:
var http = require('http')
var url = require('url')
var fs = require('fs')
var path = require('path')
var baseDirectory = __dirname // or whatever base directory you want
va...
Algorithm to implement a word cloud like Wordle
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Here is a responsive working example based on the demo but with full control on words and color. For a custom color palette please use the commented code, instead. jsbin.com/kiwojayoye/1/edit?html,js,output
– Martin Braun
J...
Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
...ord "efficient" here. Typical naive belief here (read following comments). Demo here.
– leaf
Mar 9 '19 at 9:03
1
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How can I get the corresponding table header (th) from a table cell (td)?
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Solution that handles colspan
I have a solution based on matching the left edge of the td to the left edge of the corresponding th. It should handle arbitrarily complex colspans.
I modified the test case to show that arbitrary colspan is handled correctly.
Live Demo
JS
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Java regex email
...s valid
The regex is taken from this post: Mail::RFC822::Address: regexp-based address validation. The results should coincide with online version.
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How to check if variable is string with python 2 and 3 compatibility
... in python-2.x? Or will I need to check the version and use isinstance(x, basestr) ?
10 Answers
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How do you stretch an image to fill a while keeping the image's aspect-ratio?
... much better. All you should need to do is to set the image width to 100% (demo)
.container img {
width: 100%;
}
Since you don't know the aspect ratio, you'll have to use some scripting. Here is how I would do it with jQuery (demo):
CSS
.container {
width: 40%;
height: 40%;
bac...