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List distinct values in a vector in R
How can I list the distinct values in a vector where the values are replicative? I mean, similarly to the following SQL statement:
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sqlalchemy unique across multiple columns
Let's say that I have a class that represents locations. Locations "belong" to customers. Locations are identified by a unicode 10 character code. The "location code" should be unique among the locations for a specific customer.
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Weird “[]” after Java method signature
I looked at some Java code today, and I found some weird syntax:
4 Answers
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Choose newline character in Notepad++
I notice that when I load a text file, Notepad++ will recognize and use whatever the newline character in that file is, \n or \r\n .
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PatternSyntaxException: Illegal Repetition when using regex in Java
I don't know much regex, but I need to match a simple pattern. The following should return true,
2 Answers
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How to create function that returns nothing
I want to write a function with pl/pgsql .
I'm using PostgresEnterprise Manager v3 and using shell to make a function, but in the shell I must define return type. If I don't define the return type, I'm not able to create a function.
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finding the type of an element using jQuery
In jQuery, if I have a reference to an element, how can I determine what kind of element it is, for example, an input or an dropdown? Is there any way to find out?
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How to define a reply-to address?
How can I define a reply-to address different than the :from one? Is that even possible?
2 Answers
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Python non-greedy regexes
How do I make a python regex like "(.*)" such that, given "a (b) c (d) e" python matches "b" instead of "b) c (d" ?
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Will using goto leak variables?
Is it true that goto jumps across bits of code without calling destructors and things?
1 Answer
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