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Create list of single item repeated N times
...it('itertools.repeat(0, 10)', 'import itertools', number = 1000000)
0.37095273281943264
>>> timeit.timeit('[0] * 10', 'import itertools', number = 1000000)
0.5577236771712819
But wait - it's not a fair test...
>>> itertools.repeat(0, 10)
repeat(0, 10) # Not a list!!!
The func...
Where should virtualenvs be created?
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129
Many people use the virtualenvwrapper tool, which keeps all virtualenvs in the same place (the ...
How to change the CHARACTER SET (and COLLATION) throughout a database?
...llation:
ALTER TABLE <table_name> MODIFY <column_name> VARCHAR(255) CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
What do the parts of utf8mb4_0900_ai_ci mean?
3 bytes -- utf8
4 bytes -- utf8mb4 (new)
v4.0 -- _unicode_
v5.20 -- _unicode_520_
v9.0 -- _0900_ (new)
_bin -- ju...
What's the difference between ContentControl and ContentPresenter?
...4
NirNir
27.7k99 gold badges6262 silver badges9898 bronze badges
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Combine two or more columns in a dataframe into a new column with a new name
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132
Use paste.
df$x <- paste(df$n,df$s)
df
# n s b x
# 1 2 aa TRUE 2 aa
# 2 3 bb F...
How can I split up a Git commit buried in history?
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edited May 23 '17 at 11:47
Community♦
111 silver badge
answered Nov 29 '10 at 19:14
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Start an Activity with a parameter
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answered Oct 12 '10 at 10:35
WroclaiWroclai
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UIViewController viewDidLoad vs. viewWillAppear: What is the proper division of labor?
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251
viewDidLoad is things you have to do once. viewWillAppear gets called every time the view appe...
Why do I get “Procedure expects parameter '@statement' of type 'ntext/nchar/nvarchar'.” when I try t
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217
Sounds like you're calling sp_executesql with a VARCHAR statement, when it needs to be NVARCHA...
What is the difference between Eclipse for Java (EE) Developers and Eclipse Classic?
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edited Aug 9 '16 at 12:28
rany
13499 bronze badges
answered Nov 18 '10 at 10:27
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