From 4251076b50082023f609e2823b143993f7749b57 Mon Sep 17 00:00:00 2001
From: Dave Gauer <dave@ratfactor.com>
Date: Sat, 10 Apr 2021 14:45:25 -0400
Subject: mention builtin ex coming up

---
 exercises/058_quiz7.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'exercises/058_quiz7.zig')

diff --git a/exercises/058_quiz7.zig b/exercises/058_quiz7.zig
index 46d68a8..59b48ba 100644
--- a/exercises/058_quiz7.zig
+++ b/exercises/058_quiz7.zig
@@ -419,7 +419,10 @@ pub fn main() void {
 // we need to loop through the items in reverse, skipping nulls, until
 // we reach the destination at the front of the array.
 fn printTrip(trip: []?TripItem) void {
-    var i: u8 = @intCast(u8, trip.len); // convert usize length
+    // We convert the usize length to a u8 with @intCast(), a
+    // builtin function just like @import().  We'll learn about
+    // these properly in a later exercise.
+    var i: u8 = @intCast(u8, trip.len);
 
     while (i > 0) {
         i -= 1;
-- 
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