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Rspec doesn't see my model Class. uninitialized constant error
I'm writing tests on Rspec for my models in Ruby on Rails application.
And I receive this error while starting 'rspec spec'
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How do I get indices of N maximum values in a NumPy array?
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The simplest I've been able to come up with is:
In [1]: import numpy as np
In [2]: arr = np.array([1, 3, 2, 4, 5])
In [3]: arr.argsort()[-3:][::-1]
Out[3]: array([4, 3, 1])
This involves a complete sort of the array. I wonder if numpy provides a built-in way t...
Coding Practices which enable the compiler/optimizer to make a faster program
...d K&R invented the register keyword, to hint to the compiler, that maybe it would be a good idea to keep this variable in an internal register. They also made the tertiary operator to help generate better code.
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Generate a heatmap in MatPlotLib using a scatter data set
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edited Oct 27 '16 at 23:21
Michael Mauderer
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What is the difference between JSON and Object Literal Notation?
... the main difference between a JavaScript object defined by using Object Literal Notation and JSON object ?
10 Answers
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Zip lists in Python
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Out[4]: 3
Of course, this won't work if the lists were empty to start with.
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Execute the setInterval function without delay the first time
It's there a way to configure the setInterval method of javascript to execute the method immediately and then executes with the timer
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How to find elements by class
I'm having trouble parsing HTML elements with "class" attribute using Beautifulsoup. The code looks like this
16 Answers
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How to download image using requests
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You can either use the response.raw file object, or iterate over the response.
To use the response.raw file-like object will not, by default, decode compressed responses (with GZIP or deflate). You can force it to decompress for you ...
SQLAlchemy: cascade delete
I must be missing something trivial with SQLAlchemy's cascade options because I cannot get a simple cascade delete to operate correctly -- if a parent element is a deleted, the children persist, with null foreign keys.
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