In Ruby you can redefine a function ...
Control Structures example from a Well House Consultants training course
More on Control Structures [link]
Source code: mwpar Module: R104
def adder (some, more = 7)
together = some + more
puts "I'll log that!"
f = 7
g = 9
both = adder(f,g)
several = adder(f)
# I CAN redefine a code object. This is not a separate
# method - it replaces the old code object of the same name!
# THIS IS BAD PRACTISE! in most circumstances
def adder (some, more, sdfsdf,sfdsfdsf )
"Eureka!" + " my bath has gone cold"
several = adder(f,4,7,9)
# Following line will FAIL as it uses the original template!
both = adder(f,g)
Dorothy:marub grahamellis$ ruby mwpar
I'll log that!
I'll log that!
mwpar:32:in `adder': wrong number of arguments (2 for 4) (ArgumentError)
Learn about this subject
This module and example are covered on the following public courses:
* Learning to program in Ruby
* Ruby Programming
Also available on on site courses for larger groups
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