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How do Trigonometric functions work?
...ar the evaluation point; the error generally zooms upwards as you get away from it. And if you have a function with any noncontinuous derivative (e.g. square waves, triangle waves, and their integrals), a Taylor series will give you the wrong answer.
The best "easy" solution, when using a polynomia...
How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?
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Can you edit the code from g.test_framework = :rspec to g.test_framework :rspec
– Deepak Lamichhane
Jul 2 '13 at 10:23
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What is PECS (Producer Extends Consumer Super)?
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tl;dr: "PECS" is from the collection's point of view. If you are only pulling items from a generic collection, it is a producer and you should use extends; if you are only stuffing items in, it is a consumer and you should use super. If you d...
In git, is there a way to show untracked stashed files without applying the stash?
... of a stash commit. (This isn't actually documented, but is pretty obvious from The commit which introduced the -u feature, 787513..., and the way the rest of the documentation for git-stash phrases things... or just by doing git log --graph stash@{0})
You can view just the "untracked" portion of t...
Image fingerprint to compare similarity of many images
...mage - and can be implemented quite efficiently. Subtracting one histogram from another will produce a new historgram which you can process to decide how similar two images are. Histograms, because the only evaluate the distribution and occurrence of luminosity/color information handle affine transf...
How to use putExtra() and getExtra() for string data
...ble, say str, which stores some string data. Now, I want to send this data from one activity to another activity.
18 Answe...
Python string class like StringBuilder in C#?
...gs that fulfill similar purposes:
One common way to build large strings from pieces is to grow a list of strings and join it when you are done. This is a frequently-used Python idiom.
To build strings incorporating data with formatting, you would do the formatting separately.
For insertion an...
Entity Framework Provider type could not be loaded?
...d to test project you can ensure a static reference to SqlProviderServices from your Model/entity project.
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Use of 'const' for function parameters
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I can't agree with the 'bad style' part. Dropping const from function prototypes has the advantage that you don't need to alter the header file if you decide to drop const from implementation part later.
– Michał Górny
Jan 9 '10 at 11:53
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join list of lists in python [duplicate]
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import itertools
a = [['a','b'], ['c']]
print(list(itertools.chain.from_iterable(a)))
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