大约有 41,000 项符合查询结果(耗时:0.0565秒) [XML]

https://stackoverflow.com/ques... 

Missing file warnings showing up after upgrade to Xcode 4

I recently upgraded to Xcode 4 (which is a great upgrade) but now I'm getting some warnings that I did not get before. I have looked through forums and other SO posts but have not come across how to fix this. ...
https://stackoverflow.com/ques... 

How to remove extension from string (only real extension!)

... Try this one: $withoutExt = preg_replace('/\\.[^.\\s]{3,4}$/', '', $filename); So, this matches a dot followed by three or four characters which are not a dot or a space. The "3 or 4" rule should probably be relaxed, since there are plenty of file extensions which are shorter or...
https://stackoverflow.com/ques... 

I need to generate uuid for my rails application. What are the options(gems) I have? [duplicate]

... 4 Answers 4 Active ...
https://stackoverflow.com/ques... 

Are tuples more efficient than lists in Python?

...much faster than assigning a list. >>> def a(): ... x=[1,2,3,4,5] ... y=x[2] ... >>> def b(): ... x=(1,2,3,4,5) ... y=x[2] ... >>> import dis >>> dis.dis(a) 2 0 LOAD_CONST 1 (1) 3 LOAD_CONST 2 ...
https://stackoverflow.com/ques... 

pyplot scatter plot marker size

... 435 This can be a somewhat confusing way of defining the size but you are basically specifying the...
https://stackoverflow.com/ques... 

Transport endpoint is not connected

... answered May 5 '15 at 6:49 vdudouytvdudouyt 75366 silver badges1111 bronze badges ...
https://stackoverflow.com/ques... 

C++ mark as deprecated

... 194 In C++14, you can mark a function as deprecated using the [[deprecated]] attribute (see section ...
https://stackoverflow.com/ques... 

Practical example where Tuple can be used in .Net 4.0?

I have seen the Tuple introduced in .Net 4 but I am not able to imagine where it can be used. We can always make a Custom class or Struct. ...
https://stackoverflow.com/ques... 

Normalize data in pandas

... In [92]: df Out[92]: a b c d A -0.488816 0.863769 4.325608 -4.721202 B -11.937097 2.993993 -12.916784 -1.086236 C -5.569493 4.672679 -2.168464 -9.315900 D 8.892368 0.932785 4.535396 0.598124 In [93]: df_norm = (df - df.mean()) / (df.max() - df.m...
https://stackoverflow.com/ques... 

C# member variable initialization; best practice?

... answered Nov 18 '08 at 9:04 Marc Gravell♦Marc Gravell 888k227227 gold badges23562356 silver badges27202720 bronze badges ...