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Convert Time from one time zone to another in Rails
...e_zone if logged_in?
yield
ensure
Time.zone = old_time_zone
end
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Ruby Hash to array of values
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Hash#values is not only simpler, but more efficient. Compare time ruby -e '(1..1000000).reduce({}){|h,i| h.store i,i; h}.values' with time ruby -e '(1..1000000).reduce({}){|h,i| h.store i,i; h}.map{|k,v| v}'
– jordanbtucker
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Where is the itoa function in Linux?
...to it not technically being a part of the standard. See here for a little more info. Note that you have to
#include <stdlib.h>
Of course you already know this, because you wanted to use itoa() on Linux after presumably using it on another platform, but... the code (stolen from the link a...
How to convert DOS/Windows newline (CRLF) to Unix newline (LF) in a Bash script?
... # Unix to DOS
However, if you're going to have to do this very often (more than once, roughly speaking), it is far more sensible to install the conversion programs (e.g. dos2unix and unix2dos, or perhaps dtou and utod) and use them.
If you need to process entire directories and subdirectories,...
Disable same origin policy in Chrome
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How to write a UTF-8 file with Java?
...aste to include yet another jar just because you don't want to write a few more characters.
– Jason
Jan 10 '14 at 1:03
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Emacs, switch to previous window
...dings) binds these functions to SHIFT+up/down/left/right, which I think is more convenient than your C-x bindings (which conflict with the also-useful default bindings for previous-buffer and next-buffer. lkahtz: the (kbd) function lets you specify keys in string notation in the more-readable syntax...
Which is faster : if (bool) or if(int)?
...a bool is a single byte and an int is four. I don't think there's anything more special than that.
– CB Bailey
Apr 23 '11 at 15:38
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How do C++ class members get initialized if I don't do it explicitly?
...t ctor will be generated). If we get too pedanatic, we'll probably confuse more than help and Tyler makes a good point about this in his response to me before.
– stinky472
Jun 27 '10 at 13:45
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How to read data when some numbers contain commas as thousand separator?
...ead.csv() decide and then converting those that in cols 15:41 may get you 'more' numeric columns.
– Dirk Eddelbuettel
Oct 6 '09 at 11:40
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