From 55ad7c32f2d534b1fbd438204d21738f958c51a5 Mon Sep 17 00:00:00 2001
From: Dave Gauer <dave@ratfactor.com>
Date: Tue, 9 Feb 2021 18:36:57 -0500
Subject: Moved exercises to exercises because exercises

---
 29_errdefer.zig | 60 ---------------------------------------------------------
 1 file changed, 60 deletions(-)
 delete mode 100644 29_errdefer.zig

(limited to '29_errdefer.zig')

diff --git a/29_errdefer.zig b/29_errdefer.zig
deleted file mode 100644
index cd2158d..0000000
--- a/29_errdefer.zig
+++ /dev/null
@@ -1,60 +0,0 @@
-//
-// Another common problem is a block of code that could exit in multiple
-// places due to an error - but that needs to run do something before it
-// exits (typically to clean up after itself).
-//
-// An "errdefer" is a defer that only runs if the block exits with an error:
-//
-//     {
-//         errdefer cleanup();
-//         try canFail();
-//     }
-//
-// The cleanup() function is called ONLY if the "try" statement returns an
-// error produced by canFail().
-//
-const std = @import("std");
-
-//
-var counter: u32 = 0;
-
-const MyErr = error{ GetFail, IncFail };
-
-pub fn main() void {
-    // We simply quit the entire program if we fail to get a number:
-    var a: u32 = makeNumber() catch return;
-    var b: u32 = makeNumber() catch return;
-
-    std.debug.print("Numbers: {}, {}\n", .{a,b});
-}    
-
-fn makeNumber() MyErr!u32 {
-    std.debug.print("Getting number...", .{});
-
-    // Please make the "failed" message print ONLY if the makeNumber()
-    // function exits with an error:
-    std.debug.print("failed!\n", .{});
-
-    var num = try getNumber();     // <-- This could fail!
-
-    num = try increaseNumber(num); // <-- This could ALSO fail!
-
-    std.debug.print("got {}. ", .{num});
-
-    return num;
-}
-
-fn getNumber() MyErr!u32 {
-    // I _could_ fail...but I don't!
-    return 4;
-}
-
-fn increaseNumber(n: u32) MyErr!u32 {
-    // I fail after the first time you run me!
-    if (counter > 0) return MyErr.IncFail;
-    
-    // Sneaky, weird global stuff.
-    counter += 1;
-
-    return n + 1;
-}
-- 
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