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C++ 通过主机名/域名获取IP - C/C++ - 清泛网 - 专注C/C++及内核技术
...2.h> 该头文件定义了Socket编程的功能 #pragma comment(lib,"ws2_32.lib") 连接ws2_32.lib库...代码如下：
#include <winsock2.h> //该头文件定义了Socket编程的功能
#pragma comment(lib,"ws2_32.lib") //连接ws2_32.lib库.只要程序中用到Winsock API 函数，...
private[this] vs private
...ecific cases where I need to explicitly restrict changing field value even for objects of the same class? In other words how should I choose between
...
How to validate inputs dynamically created using ng-repeat, ng-show (angular)
...
AngularJS relies on input names to expose validation errors.
Unfortunately, as of today, it is not possible (without using a custom directive) to dynamically generate a name of an input. Indeed, checking input docs we can see that the name attribute accepts a string only.
To solve the '...
Is it possible to use 'else' in a list comprehension? [duplicate]
.... It can be used in comprehension statements:
>>> [a if a else 2 for a in [0,1,0,3]]
[2, 1, 2, 3]
So for your example,
table = ''.join(chr(index) if index in ords_to_keep else replace_with
for index in xrange(15))
...
How can I specify working directory for popen
...
@T. Stone: For a standalone executable, it shouldn't change anything, unless the exe depends on some environment variables in the shell, maybe. But, with shell=False, you can't use a shell builtin such as cd: i.e., try this on Linux w...
How to open link in new tab on html?
...ref="#" target="_blank" rel="noopener noreferrer">Link</a>
Edit: for other examples, see here: http://www.w3schools.com/tags/att_a_target.asp
(Note: I previously suggested blank instead of _blank because, if used, it'll open a new tab and then use the same tab if the link is clicked again....
Eclipse: Enable autocomplete / content assist
...
By default in Eclipse you only have to press Ctrl-space for autocomplete. Then select the desired method and wait 500ms for the javadoc info to pop up.
If this doesn't work go to the Eclipse Windows menu -> Preferences -> Java -> Editor -> Content assist and check your...
Check if all elements in a list are identical
... except StopIteration:
return True
return all(first == rest for rest in iterator)
One-liner:
def checkEqual2(iterator):
return len(set(iterator)) <= 1
Also one-liner:
def checkEqual3(lst):
return lst[1:] == lst[:-1]
The difference between the 3 versions are that:
In...
Python 3 turn range to a list
...ange on python3.x also has the same property2
1print xrange(30)[12] works for python2.x
2The analogous statement to 1 in python3.x is print(range(30)[12]) and that works also.
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Stop all active ajax requests in jQuery
I have a problem, when submitting a form all active ajax request fail, and that triggers error event.
16 Answers
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