diff options
| -rw-r--r-- | source/tanya/typecons.d | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/source/tanya/typecons.d b/source/tanya/typecons.d index b65863a..d60dc26 100644 --- a/source/tanya/typecons.d +++ b/source/tanya/typecons.d @@ -367,8 +367,15 @@ struct Option(T) ref typeof(this) opAssign(U)(ref U that) if (is(U == Option)) { - this.value = that; - this.isNothing_ = that.isNothing; + if (that.isNothing) + { + reset(); + } + else + { + this.value = that.get; + this.isNothing_ = false; + } return this; } @@ -515,6 +522,15 @@ struct Option(T) assert(OptionT(Hashable(1U)).toHash() == 1U); } +// Can assign Option that is nothing +@nogc nothrow pure @safe unittest +{ + auto option1 = Option!int(5); + Option!int option2; + option1 = option2; + assert(option1.isNothing); +} + /** * Creates a new $(D_PSYMBOL Option). * |