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do {…} while(false)
...t way to FORCE a semicolon after the macro invocation, absolutely no other token is allowed to follow.
And another possibility is that there either once was a loop there or iteration is anticipated to be added in the future (e.g. in test-driven development, iteration wasn't needed to pass the tests...
How to submit a form with JavaScript by clicking a link?
... works well without any special function needed. Much easier to write with php as well. <input onclick="this.form.submit()"/>
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Types in MySQL: BigInt(20) vs Int(20)
...111000 (length 39 characters)
If you have INT(20) for system this means allocate in memory minimum 20 bits. But if you'll insert value that bigger than 2^20, it will be stored successfully, only if it's less then INT(32) -> 2147483647 (or 2 * INT(32) -> 4294967295 for UNSIGNED)
Example:
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What's the point of const pointers?
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What does it matter where they point it, it is a pointer allocated on the stack? The function can't mess that up. It makes far more sense to use read-only pointers when dealing with pointer-to-pointers. It is not the same thing as int const! I'll downvote this just for that mislead...
Linux: compute a single hash for a given folder & contents?
...=0, GID=0
Preferred I/O block size : 4096 bytes
Blocks allocated : 200
Last status change : Tue, 21 Nov 17 21:28:18 +0530
Last file access : Thu, 28 Dec 17 00:53:27 +0530
Last file modification : Tue, 21 Nov 17 21:28...
What generates the “text file busy” message in Unix?
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If trying to build phpredis on a Linux box you might need to give it time to complete modifying the file permissions, with a sleep command, before running the file:
chmod a+x /usr/bin/php/scripts/phpize \
&& sleep 1 \
&& /u...
Switch on ranges of integers in JavaScript [duplicate]
...when minified remains a switch, complete with "switch", "case" and "break" tokens, and as a result is considerably longer in code.
How switch(true) works
I think "switch(true) is obscure, but it seems some people just want to use it, so here's an explanation of why it works...
A switch/case state...
Meaning of tilde in Linux bash (not home directory)
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Tilde expansion in Bash:
http://bash-hackers.org/wiki/doku.php/syntax/expansion/tilde
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Preventing form resubmission
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@Rpant on chrome the php file that sends the location header doesn't even show up in the browser history, so the back button simply takes you back to the form.
– FluorescentGreen5
May 5 '17 at 12:03
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Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...tools.
Programmers who like simplicity and directness will continue to use PHP, or similar languages.
Alas, Java programmers are much into power tools, so, in answering that, I have just revised my expectation of mainstream Scala adoption. I have no doubt at all that Scala will become a mainstream...