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How does one write code that best utilizes the CPU cache to improve performance?
...mbers by decreasing size is one way)
Beware of the standard dynamic memory allocator, which may introduce holes and spread your data around in memory as it warms up.
Make sure all adjacent data is actually used in the hot loops. Otherwise, consider breaking up data structures into hot and cold compo...
Can you determine if Chrome is in incognito mode via a script?
...d send the visited ones to a third party. This way one could get access to tokens in urls and what not).
– Timo Tijhof
Oct 11 '12 at 2:52
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foreach vs someList.ForEach(){}
...ll more likely JIT into something efficient..
In addition, foreach() will allocate a new Enumerator no matter what. The GC is your friend, but if you're doing the same foreach repeatedly, this will make more throwaway objects, as opposed to reusing the same delegate - BUT - this is really a fringe...
Read lines from a file into a Bash array [duplicate]
...lls bash how to parse text, it defines the set of characters that break up tokens in the parsing process. By default it includes whitespaces (space & tab) as well as newline/CR - so my code above removes them just for the current parse - so that it is one line per array index (thats what I thou...
What's the idiomatic syntax for prepending to a short python list?
...e reasonable explanation the questioner linked to. I suspect CPython is re-allocating each element in memory in the list in the first two cases, so all three of these probably have linear complexity. I haven't actually looked at the code or tested it myself though, so sorry if those sources are wron...
How to escape a JSON string containing newline characters using JavaScript?
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I get this error: Uncaught SyntaxError: Unexpected token \ in JSON at position 2
– Pathros
Feb 7 '17 at 15:42
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Is PHP compiled or interpreted?
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Tokenizing a source code is not compiling. Even VBScript can be regarded as a compiled language with your definition.
– Sedat Kapanoglu
Oct 3 '09 at 20:13
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Logging Clientside JavaScript Errors on Server [closed]
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You can also encrypt a token that includes the user's ID, IP, a small random string (to foil known-plaintext attacks if your encryption algorithm is fast but weak), and a timestamp and include that as a JS variable in the page. This can then be su...
Can a CSV file have a comment?
...mand in a batch file a semicolon works (;)
REM test.bat contents
for /F "tokens=1-3 delims=," %%a in (test.csv) do @Echo %%a, %%b, %%c
;test.csv contents (this line is a comment)
;1,ignore this line,no it shouldn't
2,parse this line,yes it should!
;3,ignore this line,no it shouldn't
4,pars...
Why is the .bss segment required?
...un time, b occupies 20 * sizeof(int) bytes.
In the second program, var is allocated space and the assignment in main() modifies that space. It so happens that the space for var was described in the .bss segment rather than the .data segment, but that doesn't affect the way the program behaves when...