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
--
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To view this discussion on the web visit
https://groups.google.com/d/msg/rubyonrails-talk/-/gpwo2gOeHJ0J.
For more options, visit https://groups.google.com/groups/opt_out.
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
>
>
>
>
--
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To view this discussion on the web visit
https://groups.google.com/d/msg/rubyonrails-talk/-/89jOvtdDMDwJ.
For more options, visit https://groups.google.com/groups/opt_out.
1) Very good. Now you should try to determine what "Ruby on Rails" is, and whether your questions have anything to do with Ruby on Rails. 2) Read a tutorial on ruby exception handling, or better yet buy the book "Beginning Ruby": http://beginningruby.org/ and read that before trying to do the koans. All you seem to be doing is copying other people''s code, so what good does that do you? -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit https://groups.google.com/groups/opt_out.