changeset 485:5f3e1b275e18

Poorly named method for slightly reducing code duplication (performing some option if index found)

--- a/src/app/Session.ts	Mon Jul 03 20:32:51 2017 +0100
+++ b/src/app/Session.ts	Mon Jul 03 20:33:49 2017 +0100
@@ -101,6 +101,18 @@
     return this.stack.findIndex(predicate);
   }
 
+  findIndexAndUse(predicate: (value: T,
+                              index: number,
+                              array: T[]) => boolean,
+                  use: (index: number) => void): boolean {
+    const index = this.stack.findIndex(predicate);
+    const didFind = index !== -1;
+    if (didFind) {
+      use(index);
+    }
+    return didFind;
+  }
+
   filter(predicate: (value: T, index: number, array: T[]) => boolean): T[] {
     return this.stack.filter(predicate);
   }