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Difference between array_map, array_walk and array_filter

...ray_filter . What I could see from documentation is that you could pass a callback function to perform an action on the supplied array. But I don't seem to find any particular difference between them. ...
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Git will not init/sync/update new submodules

...mmit (i.e. the record of the submodule's commit ID) wasn't. Adding it manually seemed to do the trick - e.g.: git submodule add http://github.com/sciyoshi/pyfacebook.git external/pyfacebook (Even without removing anything from .git/config or .gitmodules.) Then commit it to record the ID properl...
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Determine a string's encoding in C#

...ply 8-bit Encoding and you have the Encoding used to decode it, you can usually get the bytes back without any corruption, though. – Nyerguds Jan 27 '18 at 13:44 ...
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C++ auto keyword. Why is it magic?

From all the material I used to learn C++, auto has always been a weird storage duration specifier that didn't serve any purpose. But just recently, I encountered code that used it as a type name in and of itself. Out of curiosity I tried it, and it assumes the type of whatever I happen to assig...
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Entity Framework Code First - two Foreign Keys from same table

... What if two teams are allowed to play only once? – ca9163d9 Jun 8 '13 at 18:53 4 ...
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How can I run dos2unix on an entire directory? [closed]

... find . -type f -print0 | xargs -0 dos2unix Will recursively find all files inside current directory and call for these files dos2unix command share | improve this answer | ...
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How do I handle newlines in JSON?

...N spec at ietf.org/rfc/rfc4627.txt contains this sentence in section 2.5: "All Unicode characters may be placed within the quotation marks except for the characters that must be escaped: quotation mark, reverse solidus, and the control characters (U+0000 through U+001F)." Since a newline is a contro...
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How to get execution time in rails console?

I want compare time of execution Post.all and SELECT * FROM posts (or some other statements) How can i get execution time of Post.all ? ...
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Should an Enum start with a 0 or a 1?

...nes: ✔️ DO provide a value of zero on simple enums. Consider calling the value something like "None." If such a value is not appropriate for this particular enum, the most common default value for the enum should be assigned the underlying value of zero. Framework Design Guidelines / ...
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HTML table with fixed headers?

... @tetra td { max-width: 30px; } this will allow you the developer to control how the rows are displayed. – Lyuben Todorov May 30 '12 at 22:28 ...