大约有 44,500 项符合查询结果（耗时：0.0280秒） [XML]
Is there a difference between foreach and map?
...
295
Different.
foreach iterates over a list and applies some operation with side effects to each ...
Difference between open and codecs.open in Python
...
Since Python 2.6, a good practice is to use io.open(), which also takes an encoding argument, like the now obsolete codecs.open(). In Python 3, io.open is an alias for the open() built-in. So io.open() works in Python 2.6 and all later ve...
What's the difference between array_merge and array + array?
...
72
The difference is:
The + operator takes the union of the two arrays, whereas the array_merge fu...
What's the right OAuth 2.0 flow for a mobile app
...implement delegated authorization in a Web API for mobile apps using OAuth 2.0. According to specification, the implicit grant flow does not support refresh tokens, which means once an access token is granted for an specific period of time, the user must grant permissions to the app again once the t...
How to install plugins to Sublime Text 2 editor?
...
182
You should have a Data/Packages folder in your Sublime Text 2 install directory.
All you need to...
How do I do multiple CASE WHEN conditions using SQL Server 2008?
... many WHEN as;
CASE WHEN Col1 = 1 OR Col3 = 1 THEN 1
WHEN Col1 = 2 THEN 2
...
ELSE 0 END as Qty
Or a Simple CASE expression
CASE Col1 WHEN 1 THEN 11 WHEN 2 THEN 21 ELSE 13 END
Or CASE within CASE as;
CASE WHEN Col1 < 2 THEN
CASE Col2 WHEN 'X' THE...
Pandas DataFrame column to list [duplicate]
...
270
You can use the Series.to_list method.
For example:
import pandas as pd
df = pd.DataFrame({...
Finding quaternion representing the rotation from one vector to another
...
Quaternion q;
vector a = crossproduct(v1, v2);
q.xyz = a;
q.w = sqrt((v1.Length ^ 2) * (v2.Length ^ 2)) + dotproduct(v1, v2);
Don't forget to normalize q.
Richard is right about there not being a unique rotation, but the above should give the "shortest arc," which ...
SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
...
1
2
Next
138
...