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How do you query for “is not null” in Mongo?
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10 Answers
10
Active
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How to pause a YouTube player when hiding the iframe?
...ementById("popupVid");
var iframe = div.getElementsByTagName("iframe")[0].contentWindow;
div.style.display = state == 'hide' ? 'none' : '';
func = state == 'hide' ? 'pauseVideo' : 'playVideo';
iframe.postMessage('{"event":"command","func":"' + func + '","args":""}', '*');
}
</scri...
How to create a tag with Javascript?
...red; }',
head = document.head || document.getElementsByTagName('head')[0],
style = document.createElement('style');
head.appendChild(style);
style.type = 'text/css';
if (style.styleSheet){
// This is required for IE8 and below.
style.styleSheet.cssText = css;
} else {
style.appendChi...
C: What is the difference between ++i and i++?
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edited Feb 28 at 10:40
johannchopin
4,83855 gold badges1818 silver badges4040 bronze badges
answ...
CSS selector for text input fields?
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edited Sep 4 '13 at 8:08
answered Nov 6 '10 at 16:30
Al...
Find a pair of elements from an array whose sum equals a given number
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30 Answers
30
Active
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How to download Xcode DMG or XIP file?
...st revision is kept in the list.)
Xcode 12
12.2 beta
12 (Requires macOS 10.15.4 or later) (Latest as of 17-Sept-2020)
Xcode 11
11.7 (Latest as of Sept 02 2020)
11.6
11.5
11.4.1 (Requires macOS 10.15.2 or later)
11.3.1
11.2.1
11.1
11 (Requires macOS 10.14.4 or later)
Xcode 10 (unsuppor...
Check if an array contains any element of another array in JavaScript
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Vanilla JS
ES2016:
const found = arr1.some(r=> arr2.includes(r))
ES6:
const found = arr1.some(r=> arr2.indexOf(r) >= 0)
How it works
some(..) checks each element of the array against a test function and returns true if any ...
How can you use optional parameters in C#?
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1081
Surprised no one mentioned C# 4.0 optional parameters that work like this:
public void SomeMe...