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Re:Ruby basics (1 viewing) (1) Guest
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TOPIC: Re:Ruby basics
#4559
ShriNi (User)
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
The catch defines a block that is labeled with the given name (which may be a Symbol or a String).

The block is executed normally until a throw is encountered.
 
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ShriNi (User)
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
Ruby's standard classes and modules raise exceptions. All the exception classes form a hierarchy, with the class Exception at the top.
 
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
Ruby's standard classes and modules raise exceptions.

All the exception classes form a hierarchy, with the class Exception at the top.

The next level contains seven different types:

Interrupt

NoMemoryError

SignalException
ScriptError

StandardError
SystemExit
 
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
There is one other exception at this level, Fatal, but the Ruby interpreter only uses this internally
 
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
Both ScriptError and StandardError have a number of subclasses.

The important thing is that if we create our own exception classes, they need to be subclasses of either class Exception or one of its descendants
 
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
FileSaveError.new($!).

We call raise to signal that an exception has occurred, passing it a new instance of FileSaveError, with the reason being that specific

exception caused the writing of the data to fail
 
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