bash regex basic simplification (50% time/cpu savings)

2021-07-18 08:57:44 +02:00
parent 8215fde89e
commit d63a340b01
2 changed files with 12 additions and 6 deletions
--- a/day19/ex1.bash
+++ b/day19/ex1.bash
@@ -29,7 +29,11 @@ function buildtree {
        else
            if [[ ! -v MATCH[$arg] ]]; then
                buildtree "$((prof+1))" "$name" "${RULE[$arg]}"
-                MATCH[$arg]="(${!name})"
+                if [[ ${!name} =~ ^.$ ]] ; then
+                    MATCH[$arg]="${!name}"
+                else
+                    MATCH[$arg]="(${!name})"
+                fi
            fi
            res+=${MATCH[$arg]}
        fi