大约有 30,000 项符合查询结果(耗时:0.0485秒) [XML]
How to create a drop-down list?
...solete
– Alberto M
Dec 13 '17 at 11:05
1
@AlbertoM Its not obsolete, its optional. You don't need...
Is gettimeofday() guaranteed to be of microsecond resolution?
I am porting a game, that was originally written for the Win32 API, to Linux (well, porting the OS X port of the Win32 port to Linux).
...
How are the points in CSS specificity calculated
Researching specificity I stumbled upon this blog - http://www.htmldog.com/guides/cssadvanced/specificity/
7 Answers
...
What is the correct way to document a **kwargs parameter?
...-- Success!
1 -- No good.
2 -- Try again.
Raises:
AttributeError, KeyError
A really great idea. A way you might use me is
>>> print public_fn_with_googley_docstring(name='foo', state=None)
0
BTW, this always returns 0. **NEVER** use with :class:`MyPublicClass`.
"""
ret...
Check whether an array is empty [duplicate]
...'t mean that array is empty. As a quick workaround you can do following:
$errors = array_filter($errors);
if (!empty($errors)) {
}
array_filter() function's default behavior will remove all values from array which are equal to null, 0, '' or false.
Otherwise in your particular case empty() cons...
LINQ equivalent of foreach for IEnumerable
... Is.EquivalentTo(values.ToList()));
}
The following fails with the error:
Expected: equivalent to < 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 >
But was: < 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 >
[Test]
public void ForEachKeywordFail()
{
//Yes, I know there is an Observable.Range.
var va...
Generating Random Passwords
...ry usage.
– teebot
Apr 14 '10 at 14:05
19
The main problem with this solution is that you can't c...
How to autosize a textarea using Prototype?
I'm currently working on an internal sales application for the company I work for, and I've got a form that allows the user to change the delivery address.
...
Insert Update trigger how to determine if insert or update
...ISTS(SELECT 1/0 ...) and it will still work and won't cause divide by zero error.
– Endrju
Oct 5 '14 at 10:15
1
...
Test if characters are in a string
...try to match on an invalid regex, it doesn't work:
> grep("[", "abc[")
Error in grep("[", "abc[") :
invalid regular expression '[', reason 'Missing ']''
To do a true substring test, use fixed = TRUE.
> grep("[", "abc[", fixed = TRUE)
[1] 1
If you do want regex, great, but that's not w...