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Check string for palindrome
...sis of the efficiency (or lack thereof) of this solution, both in terms of time and space. If you're interested in the computational complexity of this and other possible solutions to this question, please read it!
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std::cin input with spaces?
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@JonathanLeffler At the time this was written, this was the answer I had for the question that was originally asked (look at the first comment for the actual question and you will see that the context had changed due to an edit by the OP). Either w...
How to escape the % (percent) sign in C's printf?
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Lai Jiangshan, this won't work. \045 is compile-time escape that is part of the language and will turn into % when compiled. printf is a run-time function, so it deals with bytes of your string, not with C source code, and it has its own escape sequences that are parts of ...
Check if character is number?
...s to NaN
I think we can trust that these chaps have spent quite a bit of time on this!
Commented source here. Super geek discussion here.
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Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
...often treated this way, though in its case it's still useful to mutate sometimes). Implicitly unwrapped optionals would clean up its code a good deal, with relatively low loss of safety (as long as the one guarantee held, it would be safe).
(Edit) To be clear though: regular optionals are nearly a...
What's the rationale for null terminated strings?
...oblems when treating them as a bunch of
bytes).
length is known at compile time for constant literal strings (sizeof). So why would
anyone want to store it in memory prepending it to actual data ?
in a way C is doing as (nearly) everyone else, strings are viewed as arrays of char. As array length is...
Using Python String Formatting with Lists
...ke the numerical values of 0, 1 and 2 are somehow related to the number of times the word "BLAH" appears.
– SabreWolfy
Apr 21 at 13:30
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Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
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Each run consisted of 50 or more sample on each regex, and i run them 5 times on each browser.
Lets race our horses!
Results
Chrome Edge
Chars Pattern Ops/Sec Deviation Op/Sec Deviation
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How to use double or single brackets, parentheses, curly braces
... square brackets seem to evaluate quite a lot quicker than single ones.
$ time for ((i=0; i<10000000; i++)); do [[ "$i" = 1000 ]]; done
real 0m24.548s
user 0m24.337s
sys 0m0.036s
$ time for ((i=0; i<10000000; i++)); do [ "$i" = 1000 ]; done
real 0m33.478s
user 0m33.478s
sys 0m0....
LEN function not including trailing spaces in SQL Server
...ing a inconsistent method (in some case you divide its result by 2 and sometimes not) is a better option. Maybe is there a near to zero performance hit with my method though.
– Serge
Mar 25 '13 at 12:35
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