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How do I use itertools.groupby()?
...eturns iterators.
Here's an example of that, using clearer variable names:
from itertools import groupby
things = [("animal", "bear"), ("animal", "duck"), ("plant", "cactus"), ("vehicle", "speed boat"), ("vehicle", "school bus")]
for key, group in groupby(things, lambda x: x[0]):
for thing in ...
How to delete a specific line in a file?
...I have a text file full of nicknames. How can I delete a specific nickname from this file, using Python?
17 Answers
...
Bootstrap: Open Another Modal in Modal
...ls to stack as expected, you need to have them ordered in your Html markup from lowest to highest.
$(document).on('hidden.bs.modal', function (event) {
if ($('.modal:visible').length) {
$('body').addClass('modal-open');
}
});
UPDATE: When you have stacked modals, all the back...
Remove the last character from a string [duplicate]
What is fastest way to remove the last character from a string?
4 Answers
4
...
C++ Exceptions questions on rethrow of original exception
...Err(const MyErr& other) {
printf(" Base copy-constructor, this=%p from that=%p\n", this, &other);
}
virtual ~MyErr() {
printf(" Base destructor, this=%p\n", this);
}
};
struct MyErrDerived : public MyErr {
MyErrDerived() {
printf(" Derived default constructor, this=%p...
Java synchronized method lock on object, or method?
...chronize on the whole object, so two thread accessing a different variable from this same object would block each other anyway.
If you want to synchronize only on one variable at a time, so two threads won't block each other while accessing different variables, you have synchronize on them separat...
What is the canonical way to check for errors using the CUDA runtime API?
...n return either errors which occurred during the kernel execution or those from the memory copy itself. This can be confusing for the beginner, and I would recommend using explicit synchronisation after a kernel launch during debugging to make it easier to understand where problems might be arising....
How to flip background image using CSS?
...
@JitendraVyas hello from 2016! I was considering suggesting an edit to fix the jsfiddle URL as it still links to different code than is in your answer here - care to edit the post or remove the link? Thanks :)
– totallyNotL...
How to determine one year from now in Javascript
I'm trying to get one year from now's date, and it's not working.
7 Answers
7
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How do I check if a number is a palindrome?
...t number system, being able to add will do (think how you commonly convert from decimal to binary - being used to think computation means binary doesn't mean you can't do, e.g., decimal arithmetic (and you can do conversion from binary to decimal without division or modulo 2).
–...