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How to drop SQL default constraint without knowing its name?
In Microsoft SQL Server, I know the query to check if a default constraint exists for a column and drop a default constraint is:
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Linux: compute a single hash for a given folder & contents?
Surely there must be a way to do this easily!
15 Answers
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Find Java classes implementing an interface [duplicate]
Some time ago, I came across a piece of code, that used some piece of standard Java functionality to locate the classes that implemented a given interface. I know the functions were hidden in some non-logical place, but they could be used for other classes as the package name implied. Back then I di...
How to implement the Java comparable interface?
I am not sure how to implement a comparable interface into my abstract class. I have the following example code that I am using to try and get my head around it:
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What is the best way to iterate over a dictionary?
I've seen a few different ways to iterate over a dictionary in C#. Is there a standard way?
30 Answers
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How can I delete a newline if it is the last character in a file?
I have some files that I'd like to delete the last newline if it is the last character in a file. od -c shows me that the command I run does write the file with a trailing new line:
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How to read from standard input in the console?
I would like to read standard input from the command line, but my attempts have ended with the program exiting before I'm prompted for input. I'm looking for the equivalent of Console.ReadLine() in C#.
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How to get the current loop index when using Iterator?
I am using an Iterator to iterate through a collection
and I want to get the current element's index.
12 Answers
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Git authentication fails after enabling 2FA
I just enabled 2FA (I can't think of any other changes I made) and git asked for my username and password. I provided both, but they were "wrong". I tried many of the solutions here: Git push requires username and password but that didn't work. In particular, when switching from https to ssh, the ...
The function to show current file's full path in mini buffer
I need to get the full path of the file that I'm editing with emacs.
12 Answers
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