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Count characters in textarea

... relevance of IDs of textarea and second span : id="post" <-> id="rem_post" and the title of the span that holds the desired characters amount of each particular textarea <textarea class="countit" name="post" id="post"></textarea> <p> <span>characters remaining: <...
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Swift make method parameter mutable?

...eclare an inout parameter. Think: passing in a pointer. func reduceToZero(_ x: inout Int) { while (x != 0) { x = x-1 } } var a = 3 reduceToZero(&a) print(a) // will print '0' This can be particularly useful in recursion. Apple's inout declaration guidelines can be found...
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How to output in CLI during execution of PHP Unit tests?

... } } This lets you dump anything to your console at any time without all the unwanted output that comes along with the --verbose CLI option. As other answers have noted, it's best to test output using the built-in methods like: $this->expectOutputString('foo'); However, sometimes it's...
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Linking to an external URL in Javadoc?

... I recommend <a href="http://google.com" target="_top">http://google.com</a>. The reason for adding target="_top" is because some of the generated javadoc html files make use of frames, and you probably want the navigation to affect the whole page rather than just...
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Check free disk space for current partition in bash

I am writing an installer in bash. The user will go to the target directory and runs the install script, so the first action should be to check that there is enough space. I know that df will report all file systems, but I was wondering if there was a way to get the free space just for the partition...
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What is the email subject length limit?

How many characters are allowed to be in the subject line of Internet email? I had a scan of The RFC for email but could not see specifically how long it was allowed to be. I have a colleague that wants to programmatically validate for it. ...
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How to capture Curl output to a file?

...if an old one exists). curl -K myconfig.txt >> output.txt Appends all output you receive to the specified file. Note: The -K is optional. share | improve this answer | ...
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Tools for JPEG optimization? [closed]

Do you know of any tools (preferrably command-line) to automatically and losslessly optimize JPEGs that I could integrate into our build environment? For PNGs I'm currently using PNGOUT , and it generally saves around 40% bandwidth/image size. ...
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JQuery: 'Uncaught TypeError: Illegal invocation' at ajax request - several elements

...er correct entries). So, instead of: var data = { 'mode': 'filter_city', 'id_A': e[e.selectedIndex] }; it should be: var data = { 'mode': 'filter_city', 'id_A': e[e.selectedIndex].value }; Note: check Jason Kulatunga's answer, it quotes JQuery doc to explain wh...
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Windows XP or later Windows: How can I run a batch file in the background with no window displayed?

... Do you need the second batch file to run asynchronously? Typically one batch file runs another synchronously with the call command, and the second one would share the first one's window. You can use start /b second.bat to launch a second batch file asynchronously from your first that s...