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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
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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...
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...
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);
}
};
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leading zeros in rails
...eld, if the user enters "1" I would like Rails to automatically pad it to "01" before saving it to the database. Also for the min field if the user enter "0" it should put in as "00".
...
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...
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
...irectory it uses) - in my case, listener.ora in that directory contained information pertaining to an old database instance that i had uninstalled - quick and dirty way was to copy the entire contents of listener.ora from my current installation of Oracle Express, to that other directory that listen...