大约有 40,000 项符合查询结果(耗时:0.0529秒) [XML]

https://stackoverflow.com/ques... 

What's the difference between the atomic and nonatomic attributes?

...o are identical; "atomic" is the default behavior (note that it is not actually a keyword; it is specified only by the absence of nonatomic -- atomic was added as a keyword in recent versions of llvm/clang). Assuming that you are @synthesizing the method implementations, atomic vs. non-atomic chang...
https://stackoverflow.com/ques... 

How to specify different Debug/Release output directories in QMake .pro file

...ke things even easier to switch around, only define your DESTDIRs conditionally, and then use that value in all your other paths: OBJECTS_DIR = $${DESTDIR}/.obj. Cheers! – Xavier Holt Mar 7 '12 at 4:16 ...
https://stackoverflow.com/ques... 

Is ASCII code 7-bit or 8-bit?

... the paper "The Evolution of Character Codes, 1874-1968" (samizdat copy at http://falsedoor.com/doc/ascii_evolution-of-character-codes.pdf) and then chase its references (many of which are not available online and may be hard to find even with access to a university library, I regret to say). ...
https://stackoverflow.com/ques... 

How do synchronized static methods work in Java and can I use it for loading Hibernate entities?

If I have a util class with static methods that will call Hibernate functions to accomplish basic data access. I am wondering if making the method synchronized is the right approach to ensure thread-safety. ...
https://stackoverflow.com/ques... 

How do you detect/avoid Memory leaks in your (Unmanaged) code? [closed]

... Valgrind for Linux (and OS X). If you use windose - deleaker - best of all! – John Smith Dec 12 '11 at 18:12 ...
https://stackoverflow.com/ques... 

Rolling or sliding window iterator?

...docs don't have "window" in the itertool examples (i.e., at the bottom of http://docs.python.org/library/itertools.html), here's an snippet based on the code for grouper which is one of the examples given: import itertools as it def window(iterable, size): shiftedStarts = [it.islice(iterable,...
https://stackoverflow.com/ques... 

What is a good choice of database for a small .NET application? [closed]

...ference in code. The SQLite download might not have it so here is a link: http://sqlite.phxsoftware.com/ All three use SQL, though likely with a few limitations / quirks. Management Studio works with Compact and LocalDB, whereas with SQLite you will need another UI tool such as SQLite Administrat...
https://stackoverflow.com/ques... 

What are the differences between numpy arrays and matrices? Which one should I use?

...ted/numpy.matrix.html As other answers already state that you can achieve all the operations with NumPy arrays. share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

How to get started on TDD with Ruby on Rails? [closed]

...e article is broken, but found it here: web.archive.org/web/20100325215651/http://bloritsch.d-haven.net/… – fivetwentysix Dec 1 '11 at 20:40 add a comment ...
https://stackoverflow.com/ques... 

Delete/Reset all entries in Core Data?

Do you know of any way to delete all of the entries stored in Core Data? My schema should stay the same; I just want to reset it to blank. ...