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Formatting a float to 2 decimal places
...mance Warning
Interpolated strings are slow. In my experience this is the order (fast to slow):
value.ToString(format)+" blah blah"
string.Format("{0:format} blah blah", value)
$"{value:format} blah blah"
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How can I recall the argument of the previous bash command?
... Also, if you want an arbitrary argument, you can use !!:1, !!:2, etc. (!!:0 is the previous command itself.) See gnu.org/software/bash/manual/bashref.html#History-Interaction
– janmoesen
Jul 30 '10 at 12:21
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Force line-buffering of stdout when piping to tee
...nding settings changed by 'stdbuf'.
Also some filters (like 'dd' and 'cat' etc.) dont use streams for I/O,
and are thus unaffected by 'stdbuf' settings.
you are not running stdbuf on tee, you're running it on a, so this shouldn't affect you, unless you set the buffering of a's streams in a's sourc...
How to properly seed random number generator
... That will return all the time the very same sequence, in the very same order if called multiple times, that does not look very random to me. Check live example: play.golang.org/p/fHHENtaPv5 3 5 2 5 4 2 5 6 3 1
– Thomas Modeneis
Oct 6 '16 at 13:05
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Map implementation with duplicate keys
...t just eases your life, as you don't have to re-implement them, test them, etc.
– PhiLho
Jul 30 '13 at 12:51
This does...
Copying text outside of Vim with set mouse=a enabled
...9 though. didn't worked by adding either of set mouse=a / set mouse=r in /etc/vim/vimrc on remote.
– mrtipale
Nov 27 '18 at 5:47
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Get the first N elements of an array?
... indices are meaningful to you, remember that array_slice will reset and reorder the numeric array indices. You need the preserve_keys flag set to trueto avoid this. (4th parameter, available since 5.0.2).
Example:
$output = array_slice($input, 2, 3, true);
Output:
array([3]=>'c', [4]=>'d...
How to overwrite styling in Twitter Bootstrap
...nav li a {
color: red;
}
it's still going to be rendered as #999. In order to solve this, bootstrap has 22 points (calculate it yourself). So all we need is something more than that. Thus, I have added custom IDs to the elements i.e. home-menu-container and home-menu. Now the following css wil...
How do I sort a Set to a List in Java?
...have different sorting algorithm on same object (Say emp name, emp salary, etc). Single mode sorting can be implemented by using Comparable interface in to the required object.
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Is there shorthand for returning a default value if None in Python? [duplicate]
... This will return "default" if x is any falsy value, e.g. None, [], "", etc. but is often good enough and cleaner looking.
– FogleBird
Dec 4 '12 at 19:45
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