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Is arr.__len__() the preferred way to get the length of an array in Python?
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my_list = [1,2,3,4,5]
len(my_list)
# 5
The same works for tuples:
my_tuple = (1,2,3,4,5)
len(my_tuple)
# 5
And strings, which are really just arrays of characters:
my_string = 'hello world'
len(my_string)
# 11
It was intentionally done ...
What does LINQ return when the results are empty
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522
It will return an empty enumerable. It wont be null. You can sleep sound :)
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Scala: What is a TypeTag and how do I use it?
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567
+50
A TypeT...
C++ Tuple vs Struct
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}
constexpr int NumberOfSamples = 10;
constexpr int NumberOfIterations = 5;
constexpr size_t N = 1000000;
auto const sdata = test_struct_data(N);
auto const tdata = test_tuple_data(sdata);
CELERO_MAIN
BASELINE(Sort, struct, NumberOfSamples, NumberOfIterations) {
std::vector<StructData>...
Get the Row(s) which have the max count in groups using groupby
...ount
0 MM1 S1 a 3
1 MM1 S1 n 2
2 MM1 S3 cb 5
3 MM2 S3 mk 8
4 MM2 S4 bg 10
5 MM2 S4 dgd 1
6 MM4 S2 rd 2
7 MM4 S2 cb 2
8 MM4 S2 uyi 7
In [2]: df.groupby(['Mt'], sort=False)['count'].max()
Out[2]:
Mt
S1 3
S3 ...
How to export revision history from mercurial or git to cvs?
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answered Feb 25 '09 at 14:42
Brian PhillipsBrian Phillips
11.6k33 gold badges2727 silver badges2626 bronze badges
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Best practices for reducing Garbage Collector activity in Javascript
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+250
A lot of the things you need to do to minimize GC churn go against what is considered idiomatic JS in most other scenarios, so please...
CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
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157
No, that's not the rule I would use.
The major use-case I've found for the fat-arrow in defini...
Select first 4 rows of a data.frame in R
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