大约有 7,549 项符合查询结果（耗时：0.0312秒） [XML]
How to Set Focus on Input Field using JQuery
... Yes, you can write it either way. I suppose input:first might be the more formal way to write it, although it seems easier to read the other way. But maybe that's just me :)
– Justin Ethier
Jul 18 '11 at 20:17
...
what is the most efficient way of counting occurrences in pandas?
... each selected column to str type, stacking all individual columns on top, forming basically one column and then doing the value_counts() and sum() on that one column. :) Stack is pretty useful, it might not be the most obvious choice, but worked like a charm for my use-case :)
...
Relative paths based on file location instead of current working directory [duplicate]
...n -f here, because it is the most well-known one.
Multi-(Unix-like-)platform solution (including platforms with a POSIX-only set of utilities):
If your script must run on any platform that:
has a readlink utility, but lacks the -f option (in the GNU sense of resolving a symlink to its ultimate...
Why split the tag when writing it with document.write()?
... in HTML; in XHTML without extra CDATA section wrapping, it's still a well-formedness error. Also you can use \x3C in inline event handler attributes where < would also be invalid in both HTML and XHTML, so it has a wider applicability: if I were choosing one, easily-automated way to escape sensi...
What is the difference between a generative and a discriminative algorithm?
...Here's a really simple example. Suppose you have the following data in the form (x,y):
(1,0), (1,0), (2,0), (2, 1)
p(x,y) is
y=0 y=1
-----------
x=1 | 1/2 0
x=2 | 1/4 1/4
p(y|x) is
y=0 y=1
-----------
x=1 | 1 0
x=2 | 1/2 1/2
If you take a few minutes to st...
Keeping ASP.NET Session Open / Alive
...
I use JQuery to perform a simple AJAX call to a dummy HTTP Handler that does nothing but keeping my Session alive:
function setHeartbeat() {
setTimeout("heartbeat()", 5*60*1000); // every 5 min
}
function heartbeat() {
$.get(
...
How should equals and hashcode be implemented when using JPA and Hibernate
...be detaching / attaching its instances. The latter is not that common. The former is usually best handled via:
Basing equals() / hashCode() on a business key - e.g. a unique combination of attributes that is not going to change during object (or, at least, session) lifetime.
If the above is imposs...
Twitter Bootstrap: Text in navbar
... it's worth, I had to use <p class="nav navbar-text"> to get correct formatting.
– eaj
Jan 21 '13 at 20:33
Thank...
How to execute ipdb.set_trace() at will while running pytest tests
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
How would I extract a single file (or changes to a file) from a git stash?
...nation above is the commit at which changes were stashed away. We use this form of "git diff" (with two commits) because stash@{0} / refs/stash is a merge commit, and we have to tell git which parent we want to diff against. More cryptic:
$ git diff stash@{0}^! -- <filename>
should also wor...