大约有 13,700 项符合查询结果(耗时:0.0309秒) [XML]

https://stackoverflow.com/ques... 

How to remove from a map while iterating it?

...begin(); it != m.cend() /* not hoisted */; /* no increment */) { if (must_delete) { m.erase(it++); // or "it = m.erase(it)" since C++11 } else { ++it; } } Note that we really want an ordinary for loop here, since we are modifying the container itself. The range-based loop sh...
https://stackoverflow.com/ques... 

Mongoose query where value is not null

...ry The up-to-date doc about it, is here: mongoosejs.com/docs/api.html#query_Query-ne – zeropaper Jul 20 '14 at 7:52 Ho...
https://stackoverflow.com/ques... 

Git Symlinks in Windows

... on Windows git config --global alias.add-symlink '!'"$(cat <<'ETX' __git_add_symlink() { if [ $# -ne 2 ] || [ "$1" = "-h" ]; then printf '%b\n' \ 'usage: git add-symlink <source_file_or_dir> <target_symlink>\n' \ 'Create a symlink in a git repository on a Wi...
https://stackoverflow.com/ques... 

Installing python module within code

...upported by pip. Furthermore since pip v10, all code has been moved to pip._internal precisely in order to make it clear to users that programmatic use of pip is not allowed. Use sys.executable to ensure that you will call the same pip associated with the current runtime. import subprocess import ...
https://stackoverflow.com/ques... 

Why do we always prefer using parameters in SQL statements?

... the SQL statement is not going to be the same – marc_s Sep 21 '11 at 20:57 1 that means sql inje...
https://stackoverflow.com/ques... 

What is an 'endpoint' in Flask?

...c view is defined like this: @app.route('/greeting/<name>') def give_greeting(name): return 'Hello, {0}!'.format(name) Note that the function you referred to (add_url_rule) achieves the same goal, just without using the decorator notation. Therefore, the following is the same: # No "ro...
https://stackoverflow.com/ques... 

How is a CRC32 checksum calculated?

... 1100001010 = Quotient (nobody cares about the quotient) _______________ 10011 ) 11010110110000 = Augmented message (1101011011 + 0000) =Poly 10011,,.,,.... -----,,.,,.... 10011,.,,.... 10011,.,,.... -----,.,,.... 00001.,,.... ...
https://stackoverflow.com/ques... 

'id' is a bad variable name in Python

...() is a fundamental built-in: Help on built-in function id in module __builtin__: id(...) id(object) -> integer Return the identity of an object. This is guaranteed to be unique among simultaneously existing objects. (Hint: it's the object's memory address.) In g...
https://stackoverflow.com/ques... 

while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?

...oes. Here's 2.7: >>> dis.dis('True == 1') 1 0 LOAD_GLOBAL 0 (True) 3 LOAD_CONST 1 (1) 6 COMPARE_OP 2 (==) 9 RETURN_VALUE >>> dis.dis('True == 1') 1 0 LOAD_GLOBAL ...
https://stackoverflow.com/ques... 

What is the maximum recursion depth in Python, and how to increase it?

...mple context manager like this: import sys class recursionlimit: def __init__(self, limit): self.limit = limit self.old_limit = sys.getrecursionlimit() def __enter__(self): sys.setrecursionlimit(self.limit) def __exit__(self, type, value, tb): sys.setr...