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Which is faster : if (bool) or if(int)?
... (specifically -O3), here's what I get:
For f():
.type _Z1fi, @function
_Z1fi:
.LFB0:
.cfi_startproc
.cfi_personality 0x3,__gxx_personality_v0
cmpl $1, %edi
sbbl %eax, %eax
andb $58, %al
addl $99, %eax
ret
.cfi_e...
How to automatically add user account AND password with a Bash script?
...
123
You can run the passwd command and send it piped input. So, do something like:
echo thePassw...
Creating an abstract class in Objective-C
...stringWithFormat:@"%s must be overridden in a subclass/category", __PRETTY_FUNCTION__] userInfo:nil]
#define methodNotImplemented() mustOverride()
then in your methods you can use this
- (void) someMethod {
mustOverride(); // or methodNotImplemented(), same thing
}
Notes: Not sure if maki...
HTML5: number input type that takes only integers?
... This is important to accept float numbers and repeat . only once, e.g. 123.556 can be writen.
– Tarek Kalaji
Jan 28 '17 at 15:54
9
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Purpose of Trigraph sequences in C++?
...teral won't get interpreted as a digraph.
For a nice education on various fun with punctuation in C/C++ programs (including a trigraph bug that would defintinely have me pulling my hair out), take a look at Herb Sutter's GOTW #86 article.
Addendum:
It looks like GCC will not process (and will w...
What is the maximum length of a URL in different browsers?
...v0VpjSFGtrgUNUS2G0qYQwYoQQpIswIINwN8N4iV9FxoAxug34cGfQcStHLFpSVlytz9IzhMKypwWWJlPJQBUfKbLU8YHa5Yi5tckZb4j6R1pmJIQ4ysxePJ+bqr8U8xFznEXJ4u5CZjF5IsI0EfGKjtlbtn+6jFtXyds+efKZJ27dsqOpTx7N1+/RSmIpeskwvKPGqWeZNU02BclSXOZGvbGL8WhF9uI2vEGVrTUMFJmqqsoZrzKLjFY4TgRceG1i1+Ms1lFhe8WQaorxvG8fUl+czVIGWG4QphBsSLgXzP...
How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
...han k time if it's not there
Supports ordered traversal
No need for a hash function
Deletion is straightforward
New operations:
You can quickly look up prefixes of keys, enumerate all entries with a given prefix, etc.
Advantages of linked structure:
If there are many common prefixes, the spa...
Returning http status code from Web Api controller
... Brilliant. Saved me a ton of time.
– gls123
Apr 9 '18 at 9:23
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How to have the cp command create any necessary folders for copying a file to a destination [duplica
... edited Nov 14 '12 at 19:05
Oz123
21.4k2222 gold badges9494 silver badges163163 bronze badges
answered Nov 14 '12 at 18:34
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Can two applications listen to the same port?
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iptables -m statistic --mode random --probability 0.5 is fun.
– Jed Smith
Nov 7 '09 at 21:27
1
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