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How do you check if a variable is an array in JavaScript? [duplicate]
... the one you have chosen.
variable.constructor === Array
This is the fastest method on Chrome, and most likely all other browsers. All arrays are objects, so checking the constructor property is a fast process for JavaScript engines.
If you are having issues with finding out if an objects proper...
Why doesn't Internet Explorer 11 honour conditional comments even when emulating Internet Explorer 8
...eleased last week.
That was posted on April 22, 2014.
In running a few tests myself it does appear that this was fixed and all is running smoothly again for testing the most amazing browser ever produced...Internet Explorer!
...
Can I use a hash sign (#) for commenting in PHP?
...
<?php
echo 'This is a test'; // This is a one-line C++ style comment
/* This is a multi-line comment.
Yet another line of comment. */
echo 'This is yet another test.';
echo 'One Final Test'; # This is a one-line shell-style comm...
List all indexes on ElasticSearch server?
...fq_1458925279526 1 6 0 0 1008b 144b
green open qa-test_learnq_1460483735129 1 6 0 0 1008b 144b
green open qa-testimportd_1458925361399 1 6 0 0 1008b 144b
green open qa-test123p_reports 1 6 3868280 25605 5.9gb 870.5mb
gr...
How do browsers pause/change Javascript when tab or window is not active?
Background: I'm doing some user interface tests that need to detect if people are paying attention or not. But, this question is not about the page visibility API .
...
How to ignore SSL certificate errors in Apache HttpClient 4.0
... .build();
No deprecated API has been used.
Simple verifiable test case:
package org.apache.http.client.test;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequ...
How can I declare and use Boolean variables in a shell script?
...
@pms The operators "-o" and "-a" are only for the "test" command (aka "[]"). Instead, this is "if + command", without the "test". (Like "if grep foo file; then ...".) So, use the normal && and || operators: # t1=true; t2=true; f1=false; # if $t1 || $f1; then echo is_t...
How to check type of files without extensions in python?
...ess file types. There's even a windows port.
From the man page:
File tests each argument in an attempt to classify it. There are three
sets of tests, performed in this order: filesystem tests, magic number
tests, and language tests. The first test that succeeds causes the
file ty...
Best practices for catching and re-throwing .NET exceptions
...ectManager calls SetObjectData
// voila, e is unmodified save for _remoteStackTraceString
}
Although, it has the advantage of relying in public methods only it also depends on the following exception constructor (which some exceptions developed by 3rd parties do not implement):
protected Ex...
How to store Node.js deployment settings/configuration files?
...onfig.mongo.db = 'example_dev';
Override the defaults in ./config/config.test.js
var config = require('./config.global');
config.env = 'test';
config.hostname = 'test.example';
config.mongo.db = 'example_test';
module.exports = config;
Using it in ./models/user.js:
var mongoose = require('mo...