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Hashing a dictionary?
...dictionary is not nested, you could make a frozenset with the dict's items and use hash():
hash(frozenset(my_dict.items()))
This is much less computationally intensive than generating the JSON string or representation of the dictionary.
UPDATE: Please see the comments below, why this approach mi...
Traverse a list in reverse order in Python
So I can start from len(collection) and end in collection[0] .
26 Answers
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promise already under evaluation: recursive default argument reference or earlier problems?
...1, f..=f){ g.(1,T, f.=f..) }? In cases with more recursions, is it a good and safe practice adding more .? (2) if f is a non-function argument, for example g <- function(x, T, f=f){ exp(-fx/T) }* and test<- function(g.=g, T=1, f=f){ g.(1,T, f=f.) }, will using the same name for both formal a...
How to check if a process id (PID) exists
...will have a race condition.
If you want to ignore the text output of kill and do something based on the exit code, you can
if ! kill $pid > /dev/null 2>&1; then
echo "Could not send SIGTERM to process $pid" >&2
fi
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Getting a better understanding of callback functions in JavaScript
I understand passing in a function to another function as a callback and having it execute, but I'm not understanding the best implementation to do that. I'm looking for a very basic example, like this:
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Gmail's new image caching is breaking image links in newsletter
...en this email will hit the gmail server GoogleImageProxy will try to fetch and store the images from your site to its own proxy server. while fetching the images, GoogleImageProxy found some 404 statuses against your missing images and 403 against some protected images. GoogleImagesProxy has stored ...
What is the use for Task.FromResult in C#
In C# and TPL ( Task Parallel Library ), the Task class represents an ongoing work that produces a value of type T.
6 Ans...
MySQL integer field is returned as string in PHP
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I just did some tests on Windows with Laravel and Mysql on the very same schema and database server. On Windows the primary key is returned as an Integer and on Linux it's a String.
– AturSams
Oct 28 '14 at 15:38
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How to add spacing between UITableViewCell
...I have a problem when selected cell. I have set the border for contentView and whenever I selected cell the border will be smaller. How can I fix it?
– Bad_Developer
Mar 24 '17 at 11:09
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How to make a new List in Java
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Note that ArrayList is not the only kind of List -- and, regarding the question, HashSet is not the only kind of Set.
– slim
Feb 11 '13 at 14:25
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