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SQL is null and = null [duplicate]
What is the difference between
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What is a typedef enum in Objective-C?
I don't think I fundamentally understand what an enum is, and when to use it.
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IllegalArgumentException or NullPointerException for a null parameter? [closed]
I have a simple setter method for a property and null is not appropriate for this particular property. I have always been torn in this situation: should I throw an IllegalArgumentException , or a NullPointerException ? From the javadocs, both seem appropriate. Is there some kind of an understood...
How to get the first non-null value in Java?
Is there a Java equivalent of SQL's COALESCE function? That is, is there any way to return the first non-null value of several variables?
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Determine if a function exists in bash
Currently I'm doing some unit tests which are executed from bash. Unit tests are initialized, executed and cleaned up in a bash script. This script usualy contains an init(), execute() and cleanup() functions. But they are not mandatory. I'd like to test if they are or are not defined.
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Can you attach Amazon EBS to multiple instances?
We currently use multiple webservers accessing one mysql server and fileserver. Looking at moving to the cloud, can I use this same setup and attach the EBS to multiple machine instances or what's another solution?
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Naming conventions: “State” versus “Status” [closed]
Quick question: I'd like to hear your thoughts on when to use "State" versus "Status" when naming both fields such as "Foo.currentState" vs "Foo.status" and types, like "enum FooState" vs "enum FooStatus". Is there a convention discussed out there? Should we only use one? If so which one, and if not...
How are msys, msys2, and msysgit related to each other?
I've been searching around, but I can't find a thorough description of what's going on with these 3 versions of MSYS. (It's entirely possible I just don't know what to look for.) I do understand that MSYS is a minimal port of Linux tools to support development using MinGW, but I'm not clear on the r...
python pandas: apply a function with arguments to a series
I want to apply a function with arguments to a series in python pandas:
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