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Changing one character in a string
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scvalexscvalex
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What is the preferred syntax for defining enums in JavaScript?
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Naming returned columns in Pandas aggregate function? [duplicate]
...())
# height age Seed
# 1 4.51 3 301
# 15 10.89 5 301
# 29 28.72 10 301
# 43 41.74 15 301
# 57 52.70 20 301
df = data.groupby('Seed').agg(
{'age':['sum'],
'height':['mean', 'std']})
print(df.head())
# age height
# sum std ...
Iterate a list with indexes in Python
... 19] and makes it into iterable list of tuples, like so: [(0,3), (1,7), (2,19)] to use it instead of:
6 Answers
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Sublime Text 2: How to delete blank/empty lines
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hdoghmen
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answered Aug 17 '12 at 16:22
Hugo CorráHugo ...
Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...cout << i*1000000000 << std::endl;
^
a.cpp:9:2: note: containing loop
for (int i = 0; i < 4; ++i)
^
The only way we can analyze what the program is doing, is by reading the generated assembly code.
Here is the full assembly listing:
.file "a.cpp"
.s...
JPA : How to convert a native query result set to POJO class collection
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21 Answers
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Find value in an array
... array, and if that's the case, you can use Array#include?(value):
a = [1,2,3,4,5]
a.include?(3) # => true
a.include?(9) # => false
If you mean something else, check the Ruby Array API
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How does the HyperLogLog algorithm work?
...own prefix, there is a higher chance that the cardinality of the stream is 2^(size of the prefix).
That is, in a random stream of integers, ~50% of the numbers (in binary) starts with "1", 25% starts with "01", 12,5% starts with "001". This means that if you observe a random stream and see a "001",...
What are the aspect ratios for all Android phone and tablet devices?
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In case anyone wanted more of a visual reference:
Decimal approximations reference table:
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