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Why does 2 mod 4 = 2?
...Mod just means you take the remainder after performing the division. Since 4 goes into 2 zero times, you end up with a remainder of 2.
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How do I use the includes method in lodash to check if an object is in the collection?
...cludes([a, b], b);
> true
On the other hand, the where(deprecated in v4) and find methods compare objects by their properties, so they don't require reference equality. As an alternative to includes, you might want to try some (also aliased as any):
_.some([{"a": 1}, {"b": 2}], {"b": 2})
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src/lxml/etree_defs.h:9:31: fatal error: libxml/xmlversion.h: No such file or directory
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Install libxslt-devel & libxml2-devel using
sudo apt-get install libxml2-dev libxslt1-dev
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Why is parenthesis in print voluntary in Python 2.7?
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std::next_permutation Implementation Explanation
...td:next_permutation was implemented so I extracted the the gnu libstdc++ 4.7 version and sanitized the identifiers and formatting to produce the following demo...
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Splitting String with delimiter
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tim_yatestim_yates
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Preserving signatures of decorated functions
... """Computes x*y + 2*z"""
return x*y + 2*z
print funny_function("3", 4.0, z="5")
# 22
help(funny_function)
# Help on function funny_function in module __main__:
#
# funny_function(x, y, z=3)
# Computes x*y + 2*z
Python 3.4+
functools.wraps() from stdlib preserves signatures since Py...
Determine device (iPhone, iPod Touch) with iOS
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edited Sep 19 '14 at 23:36
calvinf
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finding and replacing elements in a list
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>>> a= [1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1]
>>> for n, i in enumerate(a):
... if i == 1:
... a[n] = 10
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>>> a
[10, 2, 3, 4, 5, 10, 2, 3, 4, 5, 10]
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MySQL foreign key constraints, cascade delete
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answered May 26 '10 at 22:45
Marc BMarc B
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