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Why use symbols as hash keys in Ruby?
...hed keys" against each other.
Long answer:
https://web.archive.org/web/20180709094450/http://www.reactive.io/tips/2009/01/11/the-difference-between-ruby-symbols-and-strings
http://www.randomhacks.net.s3-website-us-east-1.amazonaws.com/2007/01/20/13-ways-of-looking-at-a-ruby-symbol/
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Converting an integer to a hexadecimal string in Ruby
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You can give to_s a base other than 10:
10.to_s(16) #=> "a"
Note that in ruby 2.4 FixNum and BigNum were unified in the Integer class.
If you are using an older ruby check the documentation of FixNum#to_s and BigNum#to_s
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How to convert PascalCase to pascal_case?
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31 Answers
31
Active
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String comparison in bash. [[: not found
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165
[[ is a bash-builtin. Your /bin/bash doesn't seem to be an actual bash.
From a comment:
Add #!...
Internet Explorer 11 detection
I know IE 11 has different user agent string than all other IE
11 Answers
11
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Pointer arithmetic for void pointer in C
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+100
Final conclusion: arithmetic on a void* is illegal in both C and C++.
GCC allows it as an extension, see Arithmetic on void- and Fu...
How can I get the corresponding table header (th) from a table cell (td)?
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136
var $th = $td.closest('tbody').prev('thead').find('> tr > th:eq(' + $td.index() + ')');
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What is the difference between .text, .value, and .value2?
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241
.Text gives you a string representing what is displayed on the screen for the cell. Using .Text ...
How to convert a Drawable to a Bitmap?
...s accept Bitmap s only. I cannot use WallpaperManager because I'm pre 2.1.
20 Answers
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What's the “big idea” behind compojure routes?
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212
Compojure explained (to some degree)
NB. I am working with Compojure 0.4.1 (here's the 0.4.1 r...