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Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
...u create a "Implicitly Unwrapped Optional" vs creating just a regular variable or constant?
If you know that it can be successfully unwrapped then why create an optional in the first place?
For example, why is this:
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Getting a File's MD5 Checksum in Java
...ing to use Java to get the MD5 checksum of a file. I was really surprised but I haven't been able to find anything that shows how to get the MD5 checksum of a file.
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Creating a new dictionary in Python
I want to build a dictionary in Python. However, all the examples that I see are instantiating a dictionary from a list, etc . ..
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Combining two expressions (Expression)
I have two expressions of type Expression<Func<T, bool>> and I want to take to OR, AND or NOT of these and get a new expression of the same type
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OpenID vs. OAuth [duplicate]
What is really the difference between OpenID and oAuth? They look just the same to me.
5 Answers
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How can I copy the content of a branch to a new local branch?
I have worked on a local branch and also pushed the changes to remote. I want to revert the changes on that branch and do something else on it, but I don't want to lose the work completely. I was thinking of something like create a new branch locally and copy the old branch there, then I can revert ...
Python convert tuple to string
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Use str.join:
>>> tup = ('a', 'b', 'c', 'd', 'g', 'x', 'r', 'e')
>>> ''.join(tup)
'abcdgxre'
>>>
>>> help(str.join)
Help on method_descriptor:
join(...)
S.join(iterable) -> str
Return a string which is the concatenat...
Comparing two collections for equality irrespective of the order of items in them
I would like to compare two collections (in C#), but I'm not sure of the best way to implement this efficiently.
19 Answers...
Python function global variables?
I know I should avoid using global variables in the first place due to confusion like this, but if I were to use them, is the following a valid way to go about using them? (I am trying to call the global copy of a variable created in a separate function.)
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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
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TryGetValue will be faster.
ContainsKey uses the same check as TryGetValue, which internally refers to the actual entry location. The Item property actually has nearly identical code functionality as TryGetValue, except that it will throw a...