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Add string concat

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greg 2016-01-22 04:55:01 -08:00
parent b1f9e5cefc
commit 96e6a87f64
1 changed files with 1 additions and 0 deletions
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src/eval.rs
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@ -139,6 +139,7 @@ impl Evaluator {
match &op[..] { match &op[..] {
"+" => match (left, right) { "+" => match (left, right) {
(Number(l), Number(r)) => Number(l + r), (Number(l), Number(r)) => Number(l + r),
(StringLiteral(s1), StringLiteral(s2)) => StringLiteral(format!("{}{}", s1, s2)),
_ => Null, _ => Null,
}, },
"-" => match (left, right) { "-" => match (left, right) {