大约有 44,900 项符合查询结果（耗时：0.0263秒） [XML]
Two versions of python on linux. how to make 2.7 the default
...ed by #! /usr/bin/env python. You can usually get away with running Python 2.6 scripts in 2.7, but do you want to risk it?
On top of that, monkeying with /usr/bin can break your package manager's ability to manage packages. And changing the order of directories in your PATH will affect a lot of oth...
C++ preprocessor __VA_ARGS__ number of arguments
...
12 Answers
12
Active
...
Regular Expression to reformat a US phone number in Javascript
...
12 Answers
12
Active
...
How do I replace NA values with zeros in an R dataframe?
...
21 Answers
21
Active
...
ValueError: setting an array element with a sequence
...
260
From the code you showed us, the only thing we can tell is that you are trying to create an ar...
How do you downgrade rubygems?
I have rubygems 1.3.1 installed but I want to go back to 1.2.0. What's the command to downgrade rubygems?
6 Answers
...
How to sort git tags by version string order of form rc-X.Y.Z.W?
...
Use version sort
git tag -l | sort -V
or for git version >= 2.0
git tag -l --sort=v:refname
git tag -l --sort=-v:refname # reverse
share
|
improve this answer
|
...
Installing Google Protocol Buffers on mac
...uld like to install the older version of Google Protocol Buffers (protobuf-2.4.1) on mac using Terminal command line. I tried with brew install protobuf , but the latest version 2.5.0 has been installed. Is it possible to install the older version from terminal.
...
how to rotate a bitmap 90 degrees
...
256
You can also try this one
Matrix matrix = new Matrix();
matrix.postRotate(90);
Bitmap scale...
What is the most efficient way to create a dictionary of two pandas Dataframe columns?
...: pd.Series(df.Letter.values,index=df.Position).to_dict()
Out[9]: {1: 'a', 2: 'b', 3: 'c', 4: 'd', 5: 'e'}
Speed comparion (using Wouter's method)
In [6]: df = pd.DataFrame(randint(0,10,10000).reshape(5000,2),columns=list('AB'))
In [7]: %timeit dict(zip(df.A,df.B))
1000 loops, best of 3: 1.27 ms...