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Postgresql: Conditionally unique constraint
I'd like to add a constraint which enforces uniqueness on a column only in a portion of a table.
2 Answers
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Collections.emptyList() returns a List?
I'm having some trouble navigating Java's rule for inferring generic type parameters. Consider the following class, which has an optional list parameter:
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Git: copy all files in a directory from another branch
How do I copy all files in a directory from another branch? I can list all of the files in that directory by doing
2 Answe...
What is the difference between `git fetch origin` and `git remote update origin`?
In response to a question about pulling one commit at a time from a git repository , I was recommended to use git remote update instead of git fetch . I have read both man pages but cannot say I understood either in its entirety.
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Regex for string contains?
What is the regex for simply checking if a string contains a certain word (e.g. 'Test')? I've done some googling but can't get a straight example of such a regex. This is for a build script but has no bearing to any particular programming language.
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Match whole string
What is the regular expression (in JavaScript if it matters) to only match if the text is an exact match? That is, there should be no extra characters at other end of the string.
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How to make git ignore changes in case?
I'm not too sure what is going on here, but sometimes a particular file in my repository will change the case of it's name. e.g.,:
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How can I make a ComboBox non-editable in .NET?
I want to have a "select-only" ComboBox that provides a list of items for the user to select from. Typing should be disabled in the text portion of the ComboBox control.
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In Git, how do I figure out what my current revision is?
I just want to know what my current version number is.
5 Answers
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Open file dialog and select a file using WPF controls and C#
I have a TextBox named textbox1 and a Button named button1 .
When I click on button1 I want to browse my files to search only for image files (type jpg, png, bmp...).
And when I select an image file and click Ok in the file dialog I want the file directory to be written in the textbox1.tex...