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author | Araq <rumpf_a@web.de> | 2011-01-05 23:47:12 +0100 |
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committer | Araq <rumpf_a@web.de> | 2011-01-05 23:47:12 +0100 |
commit | ce672c19d245827f8809dc1c914f42003cb56bdc (patch) | |
tree | 43a66e6de58c35b61bdbc3d2ea6d3af4cc4eacba /tests/accept/compile | |
parent | 5635fde06024b00bb874126bea208f07b4b8db9d (diff) | |
parent | bab74b6dce13f69b7f3017b27a472ba4a260c4bb (diff) | |
download | Nim-ce672c19d245827f8809dc1c914f42003cb56bdc.tar.gz |
Merge branch 'master' of github.com:Araq/Nimrod
Diffstat (limited to 'tests/accept/compile')
-rw-r--r-- | tests/accept/compile/tgenericvariant.nim | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/accept/compile/tgenericvariant.nim b/tests/accept/compile/tgenericvariant.nim new file mode 100644 index 000000000..51d01355a --- /dev/null +++ b/tests/accept/compile/tgenericvariant.nim @@ -0,0 +1,23 @@ +type + TMaybe[T] = object + case empty: Bool + of False: value: T + else: nil + +proc Just*[T](val: T): TMaybe[T] = + result.empty = False + result.value = val + +proc Nothing[T](): TMaybe[T] = + result.empty = True + +proc safeReadLine(): TMaybe[string] = + var r = stdin.readLine() + if r == "": return Nothing[string]() + else: return Just(r) + +when isMainModule: + var Test = Just("Test") + echo(Test.value) + var mSomething = safeReadLine() + echo(mSomething.value) |