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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 string'; end}...
CSS image resize percentage of itself?
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I have 2 methods for you.
Method 1. demo on jsFiddle
This method resize image only visual not it actual dimensions in DOM, and visual state after resize centered in middle of original size.
html:
<img class="fake" src="example.png" />
css:
img {
-webkit-transform: scale(...
Is it worth using Python's re.compile?
Is there any benefit in using compile for regular expressions in Python?
26 Answers
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What are best practices for REST nested resources?
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What you have done is correct. In general there can be many URIs to the same resource - there are no rules that say you shouldn't do that.
And generally, you may need to access items directly or as a subset of something else - so your struct...
How do I see if Wi-Fi is connected on Android?
...have Wi-Fi connected. However, I can only seem to be able to tell if Wi-Fi is enabled, but they could still have a 3G connection.
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Storing time-series data, relational or non?
...g a system which polls devices for data on varying metrics such as CPU utilisation, disk utilisation, temperature etc. at (probably) 5 minute intervals using SNMP. The ultimate goal is to provide visualisations to a user of the system in the form of time-series graphs.
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Why can templates only be implemented in the header file?
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Caveat: It is not necessary to put the implementation in the header file, see the alternative solution at the end of this answer.
Anyway, the reason your code is failing is that, when instantiating a template, the compiler creates a ne...
Is it possible to change the package name of an Android app on Google Play?
I would like to know whether it is technically possible, not whether it is easy or not, to change the actual package name of an Android app that is on Google Play. What I mean by package name is the name that will show up in the URL. Please, can anyone tell me why this is / is not possible?
Thanks!
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What is the benefit of using $() instead of backticks in shell scripts?
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The major one is the ability to nest them, commands within commands, without losing your sanity trying to figure out if some form of escaping will work on the backticks.
An example, though somewhat contrived:
deps=$(find /dir -name $(ls ...
Is a GUID unique 100% of the time?
Is a GUID unique 100% of the time?
22 Answers
22
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