大约有 45,000 项符合查询结果（耗时：0.0566秒） [XML]
How to print an exception in Python?
...
If you are going to print the exception, it is better to use print(repr(e)); the base Exception.__str__ implementation only returns the exception message, not the type. Or, use the traceback module, which has methods for prin...
What's the meaning of exception code “EXC_I386_GPFLT”?
...figure out exactly what the problem is without more context, there are 27 different causes listed in my AMD64 Programmer's Manual, Vol 2 from 2005 - by all accounts, it is likely that 8 years later would have added a few more.
If it is a 64-bit system, a plausible scenario is that your code is usi...
QuotaExceededError: Dom exception 22: An attempt was made to add something to storage that exceeded
...de to work.
UPDATE: This has been fixed in Safari 11, so the behaviour is now aligned with other browsers.
share
|
improve this answer
|
follow
|
...
How to check for null in Twig?
... on what exactly you need:
is null checks whether the value is null:
{% if var is null %}
{# do something #}
{% endif %}
is defined checks whether the variable is defined:
{% if var is not defined %}
{# do something #}
{% endif %}
Additionally the is sameas test, which does a type st...
也来说说ReactOS的调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
代码:
_stprintf(String, TEXT("%s,n,8,1"), strBaudRate);
if (!Rs232ConfigurePortWin32(String))
{
MessageBox(hMainWnd, TEXT("Error configuring port!"), TEXT("Error"), MB_OK|MB_ICONSTOP);
bConnected = FALSE;
return;
}
接着看看这个函数Rs232ConfigurePo...
Check if event exists on element [duplicate]
Is there a way to check if an event exists in jQuery? I’m working on a plugin that uses custom namespaced events, and would like to be able to check if the event is binded to an element or not.
...
Android: Difference between onInterceptTouchEvent and dispatchTouchEvent?
What is the difference between onInterceptTouchEvent and dispatchTouchEvent in Android?
14 Answers
...
Multi-line regex support in Vim
...
Yes, Perl's //s modifier isn't available on Vim regexes. See :h perl-patterns for details and a list of other differences between Vim and Perl regexes.
Instead you can use \_., which means "match any single character including newline". It's...
SQL injection that gets around mysql_real_escape_string()
...5.6 by default: big5, cp932, gb2312, gbk and sjis. We'll select gbk here.
Now, it's very important to note the use of SET NAMES here. This sets the character set ON THE SERVER. If we used the call to the C API function mysql_set_charset(), we'd be fine (on MySQL releases since 2006). But more on wh...
Get the current displaying UIViewController on the screen in AppDelegate.m
...oller:
UIViewController *vc = self.window.rootViewController;
Once you know the root view controller, then it depends on how you have built your UI, but you can possibly find out a way to navigate through the controllers hierarchy.
If you give some more details about the way you defined your app...