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author | 2009-09-15 15:48:53 -0400 | |
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committer | 2009-09-15 15:48:53 -0400 | |
commit | 1b7715d8fbe242f8069f2d3ed061f47ec5749fff (patch) | |
tree | 47760017bfc37999184289878129fd3e64115e52 /lib/ur/option.ur | |
parent | 29beb826759d72be61a60c820272bf99831a7083 (diff) |
Filters implementation type-checking
Diffstat (limited to 'lib/ur/option.ur')
-rw-r--r-- | lib/ur/option.ur | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/ur/option.ur b/lib/ur/option.ur index 1f044002..a22cf5b5 100644 --- a/lib/ur/option.ur +++ b/lib/ur/option.ur @@ -7,6 +7,11 @@ fun eq [a] (_ : eq a) = | (Some x, Some y) => x = y | _ => False) +fun isNone [a] x = + case x of + None => True + | Some _ => False + fun isSome [a] x = case x of None => False |