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How to pass optional arguments to a method in C++?
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145
Here is an example of passing mode as optional parameter
void myfunc(int blah, int mode = 0)...
How can I get the concatenation of two lists in Python without modifying either one? [duplicate]
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1129
Yes: list1 + list2. This gives a new list that is the concatenation of list1 and list2.
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Should I use multiplication or division?
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Python:
time python -c 'for i in xrange(int(1e8)): t=12341234234.234 / 2.0'
real 0m26.676s
user 0m25.154s
sys 0m0.076s
time python -c 'for i in xrange(int(1e8)): t=12341234234.234 * 0.5'
real 0m17.932s
user 0m16.481s
sys 0m0.048s
multiplication i...
Combining two lists and removing duplicates, without removing duplicates in original list
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11 Answers
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What is the purpose and use of **kwargs?
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13 Answers
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Access nested dictionary items via a list of keys?
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18 Answers
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Overloading Macro on Number of Arguments
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Simple as:
#define GET_MACRO(_1,_2,_3,NAME,...) NAME
#define FOO(...) GET_MACRO(__VA_ARGS__, FOO3, FOO2)(__VA_ARGS__)
So if you have these macros:
FOO(World, !) # expands to FOO2(World, !)
FOO(foo,bar,baz) # expands to FOO3(foo,bar,baz)
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Get decimal portion of a number with JavaScript
I have float numbers like 3.2 and 1.6 .
22 Answers
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Naming returned columns in Pandas aggregate function? [duplicate]
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107
This will drop the outermost level from the hierarchical column index:
df = data.groupby(...)...