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Difference between malloc and calloc?
...oc for you, but you should use calloc explicitly if you want the memory to read as 0.
If you aren't going to ever read memory before writing it, use malloc so it can (potentially) give you dirty memory from its internal free list instead of getting new pages from the OS. (Or instead of zeroing a b...
Design Patterns: Factory vs Factory method vs Abstract Factory
I was reading design patterns from a website
7 Answers
7
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Using i and j as variables in Matlab
... and j shouldn't even be used for the imaginary unit if one wants to write readable modern Matlab code.
– horchler
Jun 11 '13 at 15:16
12
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Suppress command line output
...1 through COM4. NUL is the null device. It can always be opened for either reading or writing, any amount can be written on it, and reads always succeed but return no data. The others include the parallel printer port, the console, and up to four serial ports. As of MSDOS 5, there were several more ...
log4j logging hierarchy order
...n (at the end of the section) differs in treating OFF and ALL, well, after reading some of the source (not finding special cases) I doubt that their table is correct.
– Wolf
May 24 '18 at 9:58
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Jackson JSON custom serialization for certain fields
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Jackson-databind (at least 2.1.3) already contains special ToStringSerializer, see my answer.
– werupokz
Feb 14 '13 at 11:26
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Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...erent instance on the same server as you running amock.
Memory-wise, we already know that subprocess.Popen uses fork/clone under the hood, meaning that every time you call it you're requesting once more as much memory as Python is already eating up, i.e. in the hundreds of additional MB, all in ord...
What does “./bin/www” do in Express 4.x?
...he start script in your package.json, heroku will automatically uses that, read more here
"scripts": {
"start": "node ./bin/www",
}
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Algorithm to return all combinations of k elements from n
...rs covering the topic:
An Efficient Implementation of the Eades, Hickey, Read Adjacent Interchange Combination Generation Algorithm (PDF, with code in Pascal)
Combination Generators
Survey of Combinatorial Gray Codes (PostScript)
An Algorithm for Gray Codes
Chase's Twiddle (algorithm)
Phillip J...
When should I use git pull --rebase?
...orks on it
Alice does git checkout master && git pull. Master is already up to date.
Bob does git checkout master && git pull. Master is already up to date.
Alice does git merge topic-branch-A
Bob does git merge topic-branch-B
Bob does git push origin master before Alice
Alice does g...