Insert space for additional async exercises

1 files changed, 0 insertions, 78 deletions

diff --git a/exercises/112_packed2.zig b/exercises/112_packed2.zig
deleted file mode 100644
index 2b6b558..0000000
--- a/exercises/112_packed2.zig
+++ /dev/null
@@ -1,78 +0,0 @@
-//
-// We've already learned about switch statements in exercises 030, 031 and 108.
-// They also work with packed containers:
-
-const S = packed struct(u2) {
-    a: bool,
-    b: i1,
-};
-
-// Try to make it compile without adding an `else` prong!
-
-comptime {
-    const s: S = .{ .a = true, .b = -1 };
-    switch (s) {
-        .{ .a = true, .b = -1 } => {}, // ok!
-        .{ .a = true, .b = ??? },
-        .{ .a = ???, .b = 0 },
-        .{ .a = ???, .b = ??? },
-        => @compileError("We don't want to end up here!"),
-    }
-}
-
-// As we can see, switching on packed structs is pretty straightforward.
-// When switching on packed unions however, we'll realize that a packed
-// union never keeps track of its active tag, not even in debug mode! This
-// means that packed unions compare solely by their bit pattern (again, just
-// like integers).
-
-const U = packed union(u2) {
-    a: u2,
-    b: i2,
-};
-
-// Find and remove the duplicate case!
-
-comptime {
-    const u: U = .{ .a = 3 };
-    switch (u) {
-        .{ .a = 3 } => {}, // ok!
-        .{ .a = 2 },
-        .{ .b = 1 },
-        .{ .b = -1 },
-        .{ .a = 0 },
-        => @compileError("We don't want to end up here!"),
-    }
-}
-
-// Since packed unions don't have the concept of an active tag, it's always legal
-// to access any of their fields. This can be useful to view the same data from
-// different perspectives seamlessly.
-//
-// Try to make the float below negative:
-
-/// IEEE 754 half precision float
-const Float = packed union(u16) {
-    value: f16,
-    bits: packed struct(u16) {
-        mantissa: u10,
-        exponent: u5,
-        sign: u1,
-    },
-};
-
-pub fn main() void {
-    // Reminder: if the sign bit of a float is set, the number is negative!
-
-    var number: Float = .{ .value = 2.34 };
-    number.bits.??? = ???;
-    if (number.value != -2.34) {
-        std.debug.print("Make it negative!\n", .{});
-    }
-}
-
-// This concludes our introduction to packed containers. The next time you need
-// control over individual bits, keep them in mind as a potent alternative!
-//
-
-const std = @import("std");