大约有 18,620 项符合查询结果(耗时:0.0333秒) [XML]

https://stackoverflow.com/ques... 

How to use if - else structure in a batch file?

I have a question about if - else structure in a batch file. Each command runs individually, but I couldn't use "if - else" blocks safely so these parts of my programme doesn't work. How can I do make these parts run? Thank you. ...
https://stackoverflow.com/ques... 

Python hashable dicts

As an exercise, and mostly for my own amusement, I'm implementing a backtracking packrat parser. The inspiration for this is i'd like to have a better idea about how hygenic macros would work in an algol-like language (as apposed to the syntax free lisp dialects you normally find them in). Because...
https://stackoverflow.com/ques... 

How to configure 'git log' to show 'commit date'

How can I configure git log to show commit date instead of author date ? 3 Answers ...
https://stackoverflow.com/ques... 

What is a C++ delegate?

What is the general idea of a delegate in C++? What are they, how are they used and what are they used for? 6 Answers ...
https://stackoverflow.com/ques... 

Python UTC datetime object's ISO format doesn't include Z (Zulu or Zero offset)

Why python 2.7 doesn't include Z character (Zulu or zero offset) at the end of UTC datetime object's isoformat string unlike JavaScript? ...
https://stackoverflow.com/ques... 

Regex for numbers only

I haven't used regular expressions at all, so I'm having difficulty troubleshooting. I want the regex to match only when the contained string is all numbers; but with the two examples below it is matching a string that contains all numbers plus an equals sign like "1234=4321". I'm sure there's a way...
https://stackoverflow.com/ques... 

How to convert Milliseconds to “X mins, x seconds” in Java?

I want to record the time using System.currentTimeMillis() when a user begins something in my program. When he finishes, I will subtract the current System.currentTimeMillis() from the start variable, and I want to show them the time elapsed using a human readable format such as "XX hours, XX ...
https://stackoverflow.com/ques... 

Splitting on last delimiter in Python string?

What's the recommended Python idiom for splitting a string on the last occurrence of the delimiter in the string? example: ...
https://stackoverflow.com/ques... 

Run all SQL files in a directory

I have a number of .sql files which I have to run in order to apply changes made by other developers on an SQL Server 2005 database. The files are named according to the following pattern: ...
https://stackoverflow.com/ques... 

How to create a tuple with only one element

In the below example I would expect all the elements to be tuples, why is a tuple converted to a string when it only contains a single string? ...