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Rails auto-assigning id that already exists
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Rails is probably using the built-in PostgreSQL sequence. The idea of a sequence is that it is only used once.
The simplest solution is to set the sequence for your company.id column to the highest value in the table with a query like this:
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Remove characters from NSString?
I want to remove the spaces, so the new string would be "ABCDEFG".
6 Answers
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Get Month name from month number
I used the following c# syntax to get month name from month no but i get August i want only Aug ..
8 Answers
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How do I make this file.sh executable via double click?
First off I'm using Mac.
5 Answers
5
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Adding elements to object
I need to populate a json file, now I have something like this:
17 Answers
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Best programming aids for a quadriplegic programmer
Before you jump to conclusions, yes, this is programming related. It covers a situation that comes under the heading of, "There, but for the grace of God, go you or I." This is brand new territory for me so I'm asking for some serious help here.
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Conditional Variable vs Semaphore
...e of code is atomic, put a lock around it. You could theoretically use a binary semaphore to do this, but that's a special case.
Semaphores and condition variables build on top of the mutual exclusion provide by locks and are used for providing synchronized access to shared resources. They can be...
How to get request URI without context path?
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If you're inside a front contoller servlet which is mapped on a prefix pattern, then you can just use HttpServletRequest#getPathInfo().
String pathInfo = request.getPathInfo();
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Assuming that the servlet in your example is map...
How can I split a JavaScript string by white space or comma?
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String.split can also accept a regular expression:
input.split(/[ ,]+/);
This particular regex splits on a sequence of one or more commas or spaces, so that e.g. multiple consecutive spaces or a comma+space sequence do not pr...
Difference between outline and border
Does anybody know of any difference between 'border' and 'outline' properties in CSS? If there is no difference, then why are there two properties for the same thing?
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