Moved exercises to exercises because exercises

1 files changed, 0 insertions, 68 deletions

diff --git a/24_errors4.zig b/24_errors4.zig
deleted file mode 100644
index b60cc2d..0000000
--- a/24_errors4.zig
+++ /dev/null
@@ -1,68 +0,0 @@
-//
-// Using `catch` to replace an error with a default value is a bit
-// of a blunt instrument since it doesn't matter what the error is.
-//
-// Catch lets us capture the error value and perform additional
-// actions with this form:
-//
-//     canFail() catch |err| {
-//         if (err == FishError.TunaMalfunction) {
-//             ...
-//         }
-//     };
-//
-const std = @import("std");
-
-const MyNumberError = error{
-    TooSmall,
-    TooBig,
-};
-
-pub fn main() void {
-    // The "catch 0" below is just our way of dealing with the fact
-    // that makeJustRight() returns a error union (for now).
-    var a: u32 = makeJustRight(44) catch 0;
-    var b: u32 = makeJustRight(14) catch 0;
-    var c: u32 = makeJustRight(4)  catch 0;
-
-    std.debug.print("a={}, b={}, c={}", .{a,b,c});
-}
-
-// In this silly example we've split the responsibility of making
-// a number just right into four (!) functions:
-//
-//     makeJustRight()   Calls fixTooBig(), cannot fix any errors.
-//     fixTooBig()       Calls fixTooSmall(), fixes TooBig errors.
-//     fixTooSmall()     Calls detectProblems(), fixes TooSmall errors.
-//     detectProblems()  Returns the number or an error.
-//
-fn makeJustRight(n: u32) MyNumberError!u32 {
-    return fixTooBig(n) catch |err| { return err; };
-}
-
-fn fixTooBig(n: u32) MyNumberError!u32 {
-    return fixTooSmall(n) catch |err| {
-        if (err == MyNumberError.TooBig) {
-            return 20;
-        }
-        
-        return err;
-    };
-}
-
-fn fixTooSmall(n: u32) MyNumberError!u32 {
-    // Oh dear, this is missing a lot! But don't worry, it's nearly
-    // identical to fixTooBig() above. 
-    //
-    // If we get a TooSmall error, we should return 10.
-    // If we get any other error, we should return that error.
-    // Otherwise, we return the u32 number.
-    return detectProblems(n) ??? 
-}
-
-fn detectProblems(n: u32) MyNumberError!u32 {
-    if (n < 10) return MyNumberError.TooSmall;
-    if (n > 20) return MyNumberError.TooBig;
-    return n;
-}
-