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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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psql: FATAL: role “postgres” does not exist
I'm a postgres novice.
18 Answers
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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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What's the best way to build a string of delimited items in Java?
While working in a Java app, I recently needed to assemble a comma-delimited list of values to pass to another web service without knowing how many elements there would be in advance. The best I could come up with off the top of my head was something like this:
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Finding out whether a string is numeric or not
How can we check if a string is made up of numbers only. I am taking out a substring from a string and want to check if it is a numeric substring or not.
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Better naming in Tuple classes than “Item1”, “Item2”
...C# 7.0 (Visual Studio 2017) there is a new construction to do that:
(string first, string middle, string last) LookupName(long id)
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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 ...
Where'd padding go, when setting background Drawable?
... this issue on my EditText and Button views, where I have a nice padding for them to space away from the text, but when I change the background with setBackgroundDrawable or setBackgroundResource that padding is lost forever.
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