Method Calls and Parentheses

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	Ruby Way By Hal Fulton Slots : 1.0
	Table of Contents

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Ruby does not always require the use of parentheses to evaluate methods, unless it's necessary to avoid ambiguities.

 def f(x)  print x**2 end f 3     # 9 

However, if parentheses are used near a method, then Ruby will associate them with the method and expect an argument list inside. An expression is a valid argument.

 f (2+3)*4   # 100 f((2+3)*4)   # 576 

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