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make arrayList.toArray() return more specific types
So, normally ArrayList.toArray() would return a type of Object[] ....but supposed it's an
Arraylist of object Custom , how do I make toArray() to return a type of Custom[] rather than Object[] ?
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Difference between validate(), revalidate() and invalidate() in Swing GUI
Swing components have multiple methods related to updates of screen layout, in particular:
2 Answers
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Why does writeObject throw java.io.NotSerializableException and how do I fix it?
I have this exception and I don't understand why it would be thrown or, how I should handle it.
3 Answers
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What is PEP8's E128: continuation line under-indented for visual indent?
Just opened a file with Sublime Text (with Sublime Linter) and noticed a PEP8 formatting error that I'd never seen before. Here's the text:
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What does the `#` operator mean in Scala?
I see this code in this blog: Type-Level Programming in Scala :
4 Answers
4
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How to catch SQLServer timeout exceptions
I need to specifically catch SQL server timeout exceptions so that they can be handled differently. I know I could catch the SqlException and then check if the message string Contains "Timeout" but was wondering if there is a better way to do it?
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How to define two fields “unique” as couple
Is there a way to define a couple of fields as unique in Django?
2 Answers
2
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How to rollback just one step using rake db:migrate
...les in the db/migrate folder and running rake db:migrate , I want get back to the previous step, I think using VERSION=n is the right way to do that, but I don't know the correct value of n to use. Is there any command to check the current n value?
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XML schema or DTD for logback.xml?
I've seen several discussions on the net about how great it would be to have an XML schema or DTD for logback.xml file to have at least the very basic validation and auto-completion in IDEs like IDEA or Eclipse, but I never saw any solution.
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