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How to check a not-defined variable in JavaScript
I wanted to check whether the variable is defined or not. For example, the following throws a not-defined error
14 Answer...
How to change size of split screen emacs windows?
...ink-window-horizontally) is also bound by default.
Following one of these commands with repeat (C-x z to initiate, and just z for continued repetition) makes it pretty easy to get to the exact size you want.
If you regularly want to do this with a specific value, you could record a keyboard macro...
Share application “link” in Android
...me recommend you this application\n\n";
shareMessage = shareMessage + "https://play.google.com/store/apps/details?id=" + BuildConfig.APPLICATION_ID +"\n\n";
shareIntent.putExtra(Intent.EXTRA_TEXT, shareMessage);
startActivity(Intent.createChooser(shareIntent, "choose one"));
} catch(Ex...
How to make div background color transparent in CSS
... /* Good browsers */
Note: these are NOT CSS3 properties
See http://css-tricks.com/snippets/css/cross-browser-opacity/
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Invoking JavaScript code in an iframe from the parent page
...ain i.e. abc.com, and both are using same protocol i.e. both are either on http:// or https://.
The call will fail in below mentioned cases:
Parent page and the iframe page are from different domain.
They are using different protocols, one is on http:// and other is on https://.
Any workaround...
What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for Code
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How to check if NSString begins with a certain character
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hasPrefix works especially well.
for example if you were looking for a http url in a NSString, you would use componentsSeparatedByString to create an NSArray and the iterate the array using hasPrefix to find the elements that begin with http.
NSArray *allStringsArray =
[myStringThatHasHt...
git diff two files on same branch, same commit
...at, just use diff fileA.php fileB.php (or vimdiff if you want side by side comparison)
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How to convert date to timestamp in PHP?
How do I get timestamp from e.g. 22-09-2008 ?
19 Answers
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Insert an element at a specific index in a list and return the updated list
I have this:
5 Answers
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