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Is there a performance gain in using single quotes vs double quotes in ruby?
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$ ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.0.0]
$ cat benchmark_quotes.rb
# As of Ruby 1.9 Benchmark must be required
require 'benchmark'
n = 1000000
Benchmark.bm(15) do |x|
x.report("assign single") { n.times do; c = 'a...
Use of an exclamation mark in a Git commit message via the command line
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229
Use single quotes instead of double quotes
git commit -am 'Nailed it!'
Alternatively, if yo...
DROP IF EXISTS VS DROP?
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294
Standard SQL syntax is
DROP TABLE table_name;
IF EXISTS is not standard; different platform...
How to style readonly attribute with CSS?
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204
input[readonly]
{
background-color:blue;
}
https://curtistimson.co.uk/post/css/style-rea...
How to find server name of SQL Server Management Studio
I installed Microsoft SQL Server 2008.
15 Answers
15
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Scala Programming for Android
I have followed the tutorial at Scala and Android with Scala 2.7.3 final. The resulting Android App works but even the most basic application takes several minutes (!) to compile and needs 900 kb compressed, which is a show stopper for mobile applications. Additionally, the IDE runs out of mem...
Where are iOS simulator screenshots stored?
...les end up on the Desktop as something like: iOS Simulator Screen shot Apr 22, 2012.png.
Under Xcode 6 & newer, device screenshots taken with the "Take Screenshot" button in the Xcode "Devices" menu will end up on the desktop. Look for a file named "Screen Shot 2014-MM-DD at HH.MM.SS.png"
For X...
Folder is locked and I can't unlock it
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162
Right click on your Subversion working directory folder, and select TortoiseSVN->Clean Up fro...
The preferred way of creating a new element with jQuery
I've got 2 ways I can create a <div> using jQuery .
8 Answers
8
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What is an unsigned char?
...arisons through inequalities - although if you limit yourself to ASCII (0-127) you're just about safe.
If you are using character types as numbers, use:
signed char, which gives you at least the -127 to 127 range. (-128 to 127 is common)
unsigned char, which gives you at least the 0 to 255 range....