From: Kyle Schmitt <kyleaschmitt@...>
Date: 2008-05-15T02:06:43+09:00
Subject: anding statements.

This is odd, I was trying to use "and" to chain together some
statements, which I thought would work, but it ends up, it doesn't.

I tried "and", and was surprised that it didn't execute the second
half of the statement
I tried "&&" with some extra parenthesis just to see (although I was
pretty sure and was syntactic sugar for &&), and still no joy.
I tried "&", and it works with some statements, but not with return statements.
I know I can do this using a multi-line if, but I'm rather fond of
single line, sentence like statements.

I also tried "or", but that makes for slightly nonsensical statement,
so I'm leaving out that option.
#This works, but makes a cumbersome statement.
#puts "#{x} is divisible by two" or return false if x%2==0

It begs the question, just how does and work, if it doesn't continue
executing the right half of a statement, even when the left half was
fine?


Thanks,
          Kyle


def something(x)
	puts "#{x} is divisible by two" and return false if x%2==0
	puts "#{x} makes me happy"
	true
end

def something_different(x)
	(puts "#{x} is divisible by two")&&(return false) if x%2==0
	puts "#{x} makes me happy"
	true
end

def something_that_doesnt_work(x)
	(puts "#{x} is divisible by two")&(return false) if x%2==0
	puts "#{x} makes me happy"
	true
end

def something_longer(x)
	if x%2==0
		puts "#{x} is divisible by two"
		return false
	end
	puts "#{x} makes me happy"
	true
end