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Ruby: Calling class method from instance
...ght answer, it's a shame that "self.class" is more typing and less easy to read than the class name "Truck". oh well....
– Matt Connolly
Jan 11 '12 at 11:18
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ArrayList initialization equivalent to array initialization [duplicate]
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I stand corrected. I did not read far enough into the source.
– Fred Haslam
May 4 '10 at 3:28
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How can I multiply and divide using only bit shifting and adding?
...n of arbitrary numbers, not the division by a constant number, then this thread might be of use: https://stackoverflow.com/a/12699549/1182653
EDIT2:
One of the fastest ways to divide by integer constants is to exploit the modular arithmetics and Montgomery reduction: What's the fastest way to divi...
Rails: around_* callbacks
I have read the documentation at http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html , but don't understand when the around_* callbacks are triggered in relation to before_* and after_* .
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How to overwrite the previous print to stdout in python?
...rint('{}\r'.format(x), end="")
print()
In Python 3.6 and later, f-strings read better:
for x in range(10):
print(f'{x}\r', end="")
print()
Of course, as Tim Seguine points out in the comments, for a case this simple, you don't even need to do formatting:
for x in range(10):
print(x, end='\...
What command opens Ruby's REPL?
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How do I create a copy of an object in PHP?
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Just want to add to anyone who is reading this, that cloning will keep reference to the original object. Running MySQL queries using the cloned object may have unpredictable results because of this, as execution may not take place in a linear fashion.
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Capturing console output from a .NET application (C#)
...t = true;
compiler.Start();
Console.WriteLine(compiler.StandardOutput.ReadToEnd());
compiler.WaitForExit();
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How can I avoid running ActiveRecord callbacks?
...n is a variable in a controller somewhere, this solution means that people reading your model class won't be able to understand the callbacks. They will see after_create :something_cool and will think "great, something cool happens after create!". To actually understand your model class, they will h...
What's the difference between MemoryCache.Add and MemoryCache.Set?
I read the MSDN documentation but didn't really understand it.
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