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What are the differences between Perl, Python, AWK and sed? [closed]
...leasant language.
Perl. Any programming problem of any kind. If you like free-thinking syntax, where there are many, many ways to do the same thing, perl is fun.
Python. Any programming problem of any kind. If you like fairly limited syntax, where there are fewer choices, less subtlety, and (pe...
Insert code into the page context using a content script
...scriptFromFile("injected.js")
]);
Actually, I'm kinda new to JS, so feel free to ping me to the better ways.
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CMake link to external library
...baries the way xcode needs it in an 'appstore-compatible way'- again, feel free to enlighten me.
– kalmiya
Jan 30 '17 at 10:02
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Performance of FOR vs FOREACH in PHP
...e all going to involve at least 1 function call, which isn't slow, but not free. Yes, those are PHP opcodes again! So while + list + each has its costs as well.
For these reasons foreach is understandably the best option for simple iteration.
And don't forget, it's also the easiest to read, so ...
Replacing .NET WebBrowser control with a better browser, like Chrome?
...really must use Chrome, take a look at this product called Awesomium, it's free for non-commercial projects, but license is few thousand dollars for commercial.
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Is it better to use std::memcpy() or std::copy() in terms to performance?
... unaligned beginnings and ends. Those checks may be cheap but they are not free. Whereas std::copy can avoid these checks and vectorize. Also, the compiler may prove that source and destination arrays do not overlap and again vectorize without the user having to choose between memcpy and memmove.
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stringstream, string, and char* conversion confusion
...ring around, and it's destroyed, and thus your const char * is pointing to free'd memory.
Your statement string str(ss.str()); means that the temporary is used in the constructor for the string variable str that you've put on the local stack, and that stays around as long as you'd expect: until the...
What are the use cases for selecting CHAR over VARCHAR in SQL?
...t could be used. In UTF8 that's 3 bytes per character. For varchar, it's free to use 1-3 bytes per character as needed. This is in the MySQL manual: dev.mysql.com/doc/refman/5.0/en/charset-unicode-utf8.html
– Gavin Towey
Mar 27 '14 at 2:14
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What is the Haskell response to Node.js?
... green thread, they are of course cheaper than OS threads but they are not free. Creating 100.000 of them uses approx. 350 MB of memory and take some time. Try 100.000 connections with node.js. No problem at all . It would be magic if it were not faster since ghc uses epoll under the hood so they ca...
What is the difference between sigaction and signal?
...n", signal);
break;
}
// DO PROGRAM CLEANUP HERE, such as freeing memory, closing files, etc.
exit(signal);
}
/// @brief Set a new signal handler action for a given signal
/// @details Only update the signals with our custom handler if they are NOT set to "signal igno...