大约有 40,000 项符合查询结果（耗时：0.0388秒） [XML]
What is the difference between a mutable and immutable string in C#?
...utable objects are dangerous to use as keys into any form of Dictionary or set- the objects themselves could change, and the data structure would have no way of knowing, leading to corrupt data that would, eventually, crash your program.
However, you can change its contents- so it's much, much more...
How to detect if URL has changed after hash in JavaScript
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what arguments? how would I set up fireEvents?
– SeanMC
Jan 30 '19 at 4:11
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Why aren't python nested functions called closures?
I have seen and used nested functions in Python, and they match the definition of a closure. So why are they called nested functions instead of closures ?
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argparse module How to add option without any argument?
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To create an option that needs no value, set the action [docs] of it to 'store_const', 'store_true' or 'store_false'.
Example:
parser.add_argument('-s', '--simulate', action='store_true')
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How to make a class property? [duplicate]
...is:
class ClassPropertyDescriptor(object):
def __init__(self, fget, fset=None):
self.fget = fget
self.fset = fset
def __get__(self, obj, klass=None):
if klass is None:
klass = type(obj)
return self.fget.__get__(obj, klass)()
def __set__(sel...
How can I apply a function to every row/column of a matrix in MATLAB?
... using ==> arrayfun
Non-scalar in Uniform output, at index 1, output 1.
Set 'UniformOutput' to false.
Error in ==> @(func,matrix)arrayfun(applyToGivenRow(func,matrix),1:size(matrix,1))'
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How do I echo and send console output to a file in a bat script?
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@ECHO OFF
FOR %%I IN (TRUE FALSE) DO (
FOR %%J IN (TRUE FALSE) DO (
SET TOSCREEN=%%I & SET TOFILE=%%J & CALL :Runit)
)
GOTO :Finish
:Runit
REM Both TOSCREEN and TOFILE get assigned a trailing space in the FOR loops
REM above when the FOR loops are evaluating the first item in the...
How do you test a public/private DSA keypair?
... and I didn't know which one matched the lone id_rsa private key & I'm setting up passwordless scp so I can migrate off old websites. Making a new key pair is not an option; I've got my keys set up well and not going to mess that up.
– Chris K
Dec 30 '13 at...
The following untracked working tree files would be overwritten by merge, but I don't care
...de. As well as deleting the unwanted directory I also just deleted my user settings for the project :-(
– dumbledad
Dec 11 '15 at 7:35
7
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C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
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return 0;
}
void* ListenThread(void*ps){
int s=*(int*)ps;
fd_set listenSet;
int sock;
struct sockaddr_in clientAddr;
struct timeval timeout;
while(!toStop){
FD_ZERO(&listenSet);
FD_SET(s,&listenSet);
timeout.tv_sec = 5;
timeout.tv_usec = 0;
int...