Hello,
I found this solution :
# about_triangle_project.rb
# and
# about_triangle_project_2.rb
#
def triangle(a, b, c)
raise (TriangleError), "length cannnot be 0 or lesser" if (a <= 0) or (b
<= 0) or (c <= 0);
raise (TriangleError), "length does not match Pyschotorogas" if (a * a +
b * b != c * c);
return :equilateral if ((a == b) and (b == c))
return :isosceles if (((a == b) and (b != c)) or
((a != b) and (b == c)) or
((a == c) and (a != b)))
return :scalene if ((a !=b) and (b != c))
end
# Error class used in part 2. No need to change this code.
class TriangleError < StandardError
end
But now when a error is found the script is stopped. Can anyone give me a
hint how I can continue this script.
Roelof
Op zaterdag 22 september 2012 16:43:03 UTC+2 schreef roelof het volgende:
>
> Hello,
>
> I have to make a exception part on triangles now.
>
> The exercise looks like this :
> [/code]
> **# You need to write the triangle method in the file 'triangle.rb'
> require 'triangle.rb'
>
> class AboutTriangleProject2 < EdgeCase::Koan
> # The first assignment did not talk about how to handle errors.
> # Let's handle that part now.
> def test_illegal_triangles_throw_exceptions
> assert_raise(TriangleError) do triangle(0, 0, 0) end
> assert_raise(TriangleError) do triangle(3, 4, -5) end
> assert_raise(TriangleError) do triangle(1, 1, 3) end
> assert_raise(TriangleError) do triangle(2, 4, 2) end
> # HINT: for tips, see
> http://stackoverflow.com/questions/3834203/ruby-koan-151-raising-exceptions
> end
> end
> [/code]
>
> So I looked at that page and come with this solution :
> [code]
> def triangle(a, b, c)
>
> raise TriangleError, "length cannnot be 0 or lesser" if (a <= 0) or (b
> <= 0) or (c <= 0);
> raise TriangleError, "length does not mach Pyschotorogas" if (a * a + b
> * b != c * c);
>
>
> return :equilateral if ((a == b) and (b == c))
> return :isosceles if (((a == b) and (b != c)) or
> ((a != b) and (b == c)) or
> ((a == c) and (a != b)))
> return :scalene if ((a !=b) and (b != c))
> end
> [/code]
>
> But now I get a uninitialized constant TriangleError
>
> What did I do wrong now ?
>
> Roelof
>
>
>
>
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