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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}
x.rep...
Calling parent class __init__ with multiple inheritance, what's the right way?
...l super which invokes B's code. See http://rhettinger.wordpress.com/2011/05/26/super-considered-super for more detail on what can be done with super.
[Response question as later edited]
So it seems that unless I know/control the init's of the classes I
inherit from (A and B) I cannot make a ...
How do I get the current date and time in PHP?
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edited Aug 15 '14 at 21:06
Steve Chambers
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TransactionManagementError “You can't execute queries until the end of the 'atomic' block” while usi
..._more_model_stuff()
In Django 1.4, this works fine. However, in Django 1.5/1.6, each test is wrapped in a transaction, so if an exception occurs, it breaks the transaction until you explicitly roll it back. Therefore, any further ORM operations in that transaction, such as my do_more_model_stuff()...
When should you use a class vs a struct in C++?
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25 Answers
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What is the meaning of prepended double colon “::”?
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505
This ensures that resolution occurs from the global namespace, instead of starting at the name...
What's an appropriate HTTP status code to return by a REST API service for a validation failure?
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305
If "validation failure" means that there is some client error in the request, then use HTTP 400 ...
What is exactly the base pointer and stack pointer? To what do they point?
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edited Aug 10 '17 at 5:58
果歩プライ
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Fixed size queue which automatically dequeues old values upon new enques
...chard SchneiderRichard Schneider
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What does the explicit keyword mean?
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3415
The compiler is allowed to make one implicit conversion to resolve the parameters to a function....