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dealloc in Swift
..., namely to remove an NSNotificationCenter notification. Implementing dealloc results in a Swift compiler error:
5 Answ...
How to grep and replace
I need to recursively search for a specified string within all files and subdirectories within a directory and replace this string with another string.
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Most lightweight way to create a random string and a random hexadecimal number
...165037870407104
9.0292739868164062
5.2836320400238037
t3 only makes one call to the random module, doesn't have to build or read a list, and then does the rest with string formatting.
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What's the Best Way to Shuffle an NSMutableArray?
...o be flipped only if the result is the opposite of the side that was originally up?
– Kristopher Johnson
Oct 22 '12 at 17:00
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To ARC or not to ARC? What are the pros and cons? [closed]
...t has no GC runtime overhead. The compiler inserts retains and releases in all the places you should have anyway. But it's smarter than you and can optimize out the ones that aren't actually needed (just like it can unroll loops, eliminate temporary variables, inline functions, etc.)
OK, now I will...
printf() formatting for hex
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The treatment of zero is according to the standard.
ISO/IEC 9899:2011 §7.21.6.1 The fprintf function
¶6 The flag characters and their meanings are:
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# The result is converted to an "alternative form". ... For x (or X)
conversion, a nonzero result has 0x (or 0X) prefixed to it...
When to use std::forward to forward arguments?
...;, so you always end up with the correct type inside the function body. Finally, you need forward to turn the lvalue-turned x (because it has a name now!) back into an rvalue reference if it was one initially.
You should not forward something more than once however, because that usually does not ma...
Recursively remove files
... Yes, that is what the print0 and the -0 to xargs is for. Normally it wouldn't handle spaces correctly, however with print0 it will print the filename with a null character at the end of the line, which xarg with -0 will then use to pass the full path to xargs without a chance of having...
Random hash in Python
...is 5x faster.
– Nicolas Dumazet
Jun 11 '09 at 1:36
11
+1 - surely this is better than my answer, ...
Multiple glibc libraries on a single host
...d to know that glibc consists of many pieces (200+ shared libraries) which all must match. One of the pieces is ld-linux.so.2, and it must match libc.so.6, or you'll see the errors you are seeing.
The absolute path to ld-linux.so.2 is hard-coded into the executable at link time, and can not be easi...