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What is the proper way to test if a parameter is empty in a batch file?
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You do not make it clear that it DOES NOT work with spaces. Use @jamesdlin answer instead.
– JB. With Monica.
Jun 12 '17 at 11:56
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How do I convert a hexadecimal color to rgba with the Less compiler?
...d be wise of them to sugar up the existing RGBA into a LESS call like SASS does -- rgba(@colorValue, .5) such that it would output the same exact hing as an actual CSS rgba declaration. But hey, that's me being whiney. :)
– dudewad
Dec 30 '15 at 23:16
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Is it safe to check floating point values for equality to 0?
I know you can't rely on equality between double or decimal type values normally, but I'm wondering if 0 is a special case.
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Git: which is the default configured remote for branch?
...branch.
The last sentence of this error message below makes me wonder: How do I find out which is the "default configured remote for your current branch" ? And how do I set it?
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Wait for a void async method
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await Task.Run(() => blah()) is misleading. This does not await the completion of async function blah, it just awaits the (trivial) creation of the task, and continues immediately before blah() has completed.
– Jonathan Lidbeck
Apr 17 ...
What does the ??!??! operator do in C?
...pport that theory.
From ISO/IEC 9899:1999 §5.2.1.1, footnote 12 (h/t @Random832):
The trigraph sequences enable the input of characters that are not defined in the Invariant Code Set as
described in ISO/IEC 646, which is a subset of the seven-bit US ASCII code set.
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How does `scp` differ from `rsync`?
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rysnc can be useful to run on slow and unreliable connections. So if your download aborts in the middle of a large file rysnc will be able to continue from where it left off when invoked again.
Use rsync -vP username@host:/path/to/file .
The -P option preserves partially downloaded files and also...
How to show the “Are you sure you want to navigate away from this page?” when changes committed?
...t setting the message, it is as simple as:
// Enable navigation prompt
window.onbeforeunload = function() {
return true;
};
// Remove navigation prompt
window.onbeforeunload = null;
Read below for legacy browser support.
Update (2013)
The orginal answer is suitable for IE6-8 and FX1-3.5 (wh...
Changing the image source using jQuery
My DOM looks like this:
16 Answers
16
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How to create a file in memory for user to download, but not through server?
...any way I can create a text file on the client side and prompt the user to download it, without any interaction with the server?
I know I can't write directly to their machine (security and all), but can I create and prompt them to save it?
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