Major Addition Bug?

ruby-talk
1

Jeff Mitchell quixoticsycophant@yahoo.com wrote on
13 May 2004 02.59:

Coming from a background in mathematics, I have personal
affection for:

class Float
def within?(epsilon, other)
abs(self - other) < epsilon
end
end

EPSILON = 1e-8

…

if a.within?(EPSILON, b)

…

I read this as, “if a is within epsilon of b” – a common
phrase in analysis.

Mmm. I might write that as:

class Float
def within?(other, epsilon = 1e-8)
abs(self - other) < epsilon
end
end

It messes up the nice readability, but you don’t have to type EPSILON
all the time, either. Alternatively, you could do:

class Float
def in_epsilon?(other, epsilon = 1e-8)
abs(self - other) < epsilon
end
end

That gives you the same functionality and minimal typing, but is perhaps
more readable.

-austin

···

–
austin ziegler * austin.ziegler@evault.com