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In Postgresql, force unique on combination of two columns
I would like to set up a table in PostgreSQL such that two columns together must be unique. There can be multiple values of either value, so long as there are not two that share both.
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Can't find how to use HttpContent
I am trying to use HttpContent :
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Specify width in *characters*
When using a fixed width font , I'd like to specify the width of an HTML element in characters .
2 Answers
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How do I setup a SSL certificate for an express.js server?
Before, in an older version of express, I could do this:
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Can I call memcpy() and memmove() with “number of bytes” set to zero?
Do I need to treat cases when I actully have nothing to move/copy with memmove() / memcpy() as edge cases
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How to loop through a HashMap in JSP?
How can I loop through a HashMap in JSP?
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Drag and drop files into WPF
I need to drop an image file into my WPF application. I currently have a event firing when I drop the files in, but I don't know how what to do next. How do I get the Image? Is the sender object the image or the control?
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How to convert a LocalDate to an Instant?
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How to run Maven from another directory (without cd to project dir)?
Supposing my maven project is located in /some/location/project and my current location is /another/location/ how can I run maven build without changing to project location cd /some/location/project ?
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Select multiple records based on list of Id's with linq
I have a list containing Id's of my UserProfile table. How can i select all UserProfiles based on the list of Id's i got in a var using LINQ ?
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