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How to hash a string into 8 digits?
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What's an elegant way to conditionally add a class to an HTML element in a view?
...ere a ternary would be necessary (e.g. @success ? 'good' : 'bad'), pass an array where the first element is the class for true and the other is for false
<div class="<%= [:good, :bad] => @success %>">
Inspired by React
This technique is inspired by an add-on called classNames (for...
Is there a fixed sized queue which removes excessive elements?
...ixed size queue this way:
public class LimitedSizeQueue<K> extends ArrayList<K> {
private int maxSize;
public LimitedSizeQueue(int size){
this.maxSize = size;
}
public boolean add(K k){
boolean r = super.add(k);
if (size() > maxSize){
...
How to trigger a click on a link using jQuery
...ById('test1').click(); // Works!
Or by accessing the jQuery object as an array
$('#test1')[0].click(); // Works too!!!
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Check whether a string is not null and not empty
...r.length() worked for me. My case was that i'm getting the values from the array after querying from the database. Even if the data was empty, when i did the str.length it was giving "1" length. Very strange but thanks for showing me this.
– arn-arn
Mar 5 '15 a...
How can I benchmark JavaScript code? [closed]
...od to test
* @param {number} iterations number of executions.
* @param {Array} args to pass in.
* @param {T} context the context to call the method in.
* @return {number} the time it took, in milliseconds to execute.
*/
var bench = function (method, iterations, args, context) {
var time ...
omp parallel vs. omp parallel for
...e. In short it can be used for dynamic allocation of OpenMP thread-private arrays before executing for cycle in several threads.
It is impossible to do the same initializing in parallel for case.
UPD:
In the question example there is no difference between single pragma and two pragmas. But in pract...
How to match all occurrences of a regex
...).flatten. If your regex contains groups, it will return in a single plain array.
string = "A 54mpl3 string w1th 7 numbers scatter3r ar0und"
your_regex = /(\d+)[m-t]/
string.scan(your_regex).flatten
=> ["54", "1", "3"]
Regex can be a named group as well.
string = 'group_photo.jpg'
regex = /\...
When to use the brace-enclosed initializer?
...a list of values to be stored in the object (like the elements of a vector/array, or real/imaginary part of a complex number), use curly braces initialization if available.
If the values you are initializing with are not values to be stored, but describe the intended value/state of the object, use p...
XPath to select multiple tags
...: kitchen:table and sql:table, or between architecture:column, sql:column, array:column, military:column
– Dimitre Novatchev
Aug 1 '18 at 16:14
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