Add string concat

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