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| klassen Method |
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Object#method
, and are associated
with a particular object (not just with a class). They may be used
to invoke the method within the object, and as a block associated with
an iterator.
class Thing
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def square(n)
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n*n
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end
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end
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aThing = Thing.new
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aMethod = aThing.method("square")
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aMethod.call(9)
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81
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[ 1, 2, 3 ].collect(&aMethod)
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[1, 4, 9]
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| instansmetoder | ||
| [ ] | meth[ [ args ]* ] -> anObject |
Synonym for Method.call.
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| arity | meth.arity -> aFixnum | Returns an indication of the number of arguments accepted by a method. Returns a nonnegative integer for methods that take a fixed number of arguments. For Ruby methods that take a variable number of arguments, returns -n-1, where n is the number of required arguments. For methods written in C, returns -1 if the call takes a variable number of arguments. |
| call | meth.call( [ args ]* ) -> anObject |
Invokes the meth with the specified
arguments, returning the method's return value.
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| to_proc | meth.to_proc -> aProc |
Returns a Proc object corresponding to this method.
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