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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...tionaries in a single expression?
For dictionaries x and y, z becomes a shallowly merged dictionary with values from y replacing those from x.
In Python 3.5 or greater:
z = {**x, **y}
In Python 2, (or 3.4 or lower) write a function:
def merge_two_dicts(x, y):
z = x.copy() # start with x's ...
Converting camel case to underscore case in ruby
...A-Z][a-z])/, '\1_\2').
gsub(/([a-z])([A-Z])/, '\1_\2').
downcase
end
"FooBar".snake_case #=> "foo_bar"
"HeadlineCNNNews".snake_case #=> "headline_cnn_news"
"CNN".snake_case #=> "cnn"
How do I expire a PHP session after 30 minutes?
...ms with filesystems where atime tracking is not available.
So it additionally might occur that a session data file is deleted while the session itself is still considered as valid because the session data was not updated recently.
And second:
session.cookie_lifetime
session.cookie_lifetime ...
What's wrong with using $_REQUEST[]?
...a number of posts on here saying not to use the $_REQUEST variable. I usually don't, but sometimes it's convenient. What's wrong with it?
...
What is the javascript filename naming convention? [closed]
...to use something similar to the naming scheme jQuery uses. It's not universally adopted but it is pretty common.
product-name.plugin-ver.sion.filetype.js
where the product-name + plugin pair can also represent a namespace and a module. The version and filetype are usually optional.
filetype can ...
git: How to ignore all present untracked files?
Is there a handy way to ignore all untracked files and folders in a git repository?
(I know about the .gitignore .)
8 An...
How do you create a daemon in Python?
...Sander Marechal's code sample is superior to the original, which was originally posted in 2004. I once contributed a daemonizer for Pyro, but would probably use Sander's code if I had to do it over.
share
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how to check the jdk version used to compile a .class file [duplicate]
...the ".class" in the command otherwise I got a message, "Error: Cannot find foo.class". So doing, "javap -verbose foo | grep "major"" worked. Just a heads up. stackoverflow.com/questions/13356811/…
– Kyle Bridenstine
Dec 1 '15 at 19:21
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Python != operation vs “is not”
...right hand side and the left hand side are the very same object. No methodcalls are done, objects can't influence the is operation.
You use is (and is not) for singletons, like None, where you don't care about objects that might want to pretend to be None or where you want to protect against object...
Command not found error in Bash variable assignment
I have this script called test.sh:
5 Answers
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