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How do I pick randomly from an array?
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[:foo, :bar].sample # => :foo, or :bar :-)
It is available in Ruby 1.9.1+. To be also able to use it with an earlier version of Ruby, you could require "backports/1.9.1/array/sample".
Note that in Ruby 1.8.7 it exists under the unfortunate name choice; it was renamed in later version so you ...
How to make div background color transparent in CSS
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Adrien Be
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answered Aug 4 '12 at 9:03
Paul FlemingPaul Fleming
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Django Server Error: port is already in use
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EDIT:
For osx users you can use sudo lsof -t -i tcp:8000 | xargs kill -9
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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
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edited Nov 5 '15 at 13:19
Vlastimil Ovčáčík
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answered Aug...
Inspecting standard container (std::map) contents with gdb
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answered Jan 9 '09 at 10:31
jpalecekjpalecek
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what exactly is device pixel ratio?
...resolution is double the logical linear resolution.
Physical resolution: 960 x 640
Logical resolution: 480 x 320
The formula is:
Where:
is the physical linear resolution
and:
is the logical linear resolution
Other devices report different device pixel ratios, including non-integer ones...
How to trim a string in SQL Server before 2017?
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edited Oct 8 '08 at 15:29
answered Oct 7 '08 at 17:55
Ben...
Why are floating point numbers inaccurate?
...nt and a mantissa (also called the significand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason it is impossible to represent some decimal numbers this way is that both the exponent a...
How do I force a UITextView to scroll to the top every time I change the text?
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UITextView*note;
[note setContentOffset:CGPointZero animated:YES];
This does it for me.
Swif...
Append lines to a file using a StreamWriter
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edited Apr 19 '17 at 16:12
DWRoelands
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