how can I view all the available methods on an object in ruby. I m using the aptana IDE when I type File. no methods are displayed. I m coming from an eclipse/java background.
Thanks
There are several methods:
obj.methods
obj.public_methods
obj.private_methods
obj.protected_methods
obj.singleton_methods
Update
To get the object methods apart from all inherited methods you can do:
obj.methods(false)
As Tempus mentioned in the comments, the following command is very helpful to get the current object methods apart from the Object(base class) inherited methods:
obj.methods - Object.methods
You can pass true to the methods if you want to ignore the methods defined in superclasses:
obj.methods(true)
obj.public_methods(true)
obj.private_methods(true)
obj.protected_methods(true)
obj.singleton_methods(true)
Or, if you only want to remove the most common methods that are defined in the Object class, you want to append either - Object.methods or - Object.instance_methods, depending on whether obj is a class or an instance of a class.
I would also note that obj.methods does not return the method names sorted, so you might want to do obj.methods.sort .
If you have a Ruby interpreter running, <object>.methods will show the available methods on the object. In Eclipse when I typed File. nothing happened until I did a Content Assist command (CTRL+space). At that point I did get a list of methods.
You can invoke File.methods in the interactive Ruby interpreter to see all the available methods. I m not sure if there s a way in the IDE you re using, as I haven t used it before.
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