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Static fields on a null reference in Java
static members ( static fields or static methods) in Java are associated with their respective class rather than the objects of this class. The following code attempts to access a static field on a null reference.
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Unique constraint that allows empty values in MySQL
I have a field that stores product codes. The codes are unique, but some products simply doesn't have a code. I can't invent codes because those are providers codes.
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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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Conditionally Remove Dataframe Rows with R [duplicate]
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3 Answers
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How do I get the name of a Ruby class?
How can I get the class name from an ActiveRecord object?
5 Answers
5
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Switch case with fallthrough?
I am looking for the correct syntax of the switch statement with fallthrough cases in Bash (ideally case-insensitive).
In PHP I would program it like:
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What does @: (at symbol colon) mean in a Makefile?
What does the following do in a Makefile?
2 Answers
2
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Pass a PHP array to a JavaScript function [duplicate]
I am trying to get a PHP array variable into a JavaScript variable.
4 Answers
4
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Handling a Menu Item Click Event - Android
I want to create an intent that starts a new activity once a Menu Item is clicked, but I'm not sure how to do this. I've been reading through the android documentation, but my implementation isn't correct..and some guidance in the right direction would help. I've listed my code below and commented o...
Differences between fork and exec
What are the differences between fork and exec ?
9 Answers
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