diff options
Diffstat (limited to 'exercises')
| -rw-r--r-- | exercises/028_defer2.zig | 23 | ||||
| -rw-r--r-- | exercises/116_defer3.zig | 18 |
2 files changed, 23 insertions, 18 deletions
diff --git a/exercises/028_defer2.zig b/exercises/028_defer2.zig index 35c1326..b490a89 100644 --- a/exercises/028_defer2.zig +++ b/exercises/028_defer2.zig @@ -10,6 +10,8 @@ pub fn main() void { for (animals) |a| printAnimal(a); std.debug.print("done.\n", .{}); + + std.debug.print("Answer to everything? {d}\n", .{calculateTheUltimateQuestionOfLife()}); } // This function is _supposed_ to print an animal name in parentheses @@ -35,3 +37,24 @@ fn printAnimal(animal: u8) void { std.debug.print("Unknown", .{}); } + +// This function is supposed to calculate the answer to the +// ultimate question of life, the universe, and everything, +// but it needs to be deferred as far in the future as possible, +// in order to gather more data. +// +// When there are multiple defers in a single block, they are executed in reverse order. +// This example might seem silly, but it's important to know when e.g. +// deinitializing containers whose elements need to be deinitialized first. +fn calculateTheUltimateQuestionOfLife() u32 { + var x: u32 = 100; + + // Try reordering the statements to get the answer 42 + { + defer x = x / 10; + defer x = x + 11; + defer x = x * 2; + } + + return x; +} diff --git a/exercises/116_defer3.zig b/exercises/116_defer3.zig deleted file mode 100644 index 6e3cf6d..0000000 --- a/exercises/116_defer3.zig +++ /dev/null @@ -1,18 +0,0 @@ -// -// When there are multiple defers in a single block, they are executed in reverse order. -// -const std = @import("std"); - -pub fn main() void { - var x: u32 = 100; - { - // Try reordering the statements to get the answer 42 - defer x = x / 10; - defer x = x + 11; - defer x = x * 2; - - // It might seem silly in this example, but it's important to know when - // deinitializing containers whose elements need to be deinitialized first. - } - std.debug.print("{d}\n", .{x}); -} |