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Is there a more elegant way of adding an item to a Dictionary safely?
I need to add key/object pairs to a dictionary, but I of course need to first check if the key already exists otherwise I get a " key already exists in dictionary " error. The code below solves this but is clunky.
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Using OR in SQLAlchemy
I've looked through the docs and I cant seem to find out how to do an OR query in SQLAlchemy. I just want to do this query.
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What is the difference between tree depth and height?
This is a simple question from algorithms theory.
The difference between them is that in one case you count number of nodes and in other number of edges on the shortest path between root and concrete node.
Which is which?
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What is the difference between JDK dynamic proxy and CGLib?
In case of the Proxy Design Pattern , What is the difference between JDK's Dynamic Proxy and third party dynamic code generation API s such as CGLib ?
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How do I delete/remove a shell function?
I have done this:
2 Answers
2
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Get all git commits since last tag
When I'm going to tag a commit, I need to know what changed since the last tagged commit. Eg:
2 Answers
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Is there a naming convention for Django apps
Is there a preferred naming convention for creating a Django app consisting of more than one word? For instance, which of the following is preferred?
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Limits of Nat type in Shapeless
In shapeless, the Nat type represents a way to encode natural numbers at a type level. This is used for example for fixed size lists. You can even do calculations on type level, e.g. append a list of N elements to a list of K elements and get back a list that is known at compile time to have N+...
Remove file from SVN repository without deleting local copy
How can I "delete" a file which is already in the SVN repository without deleting it from my file system?
5 Answers
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what is the difference between ?:, ?! and ?= in regex?
I searched for the meaning of these expressions but couldn't understand the exact difference between them.
This is what they say:
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