| ... | @@ -814,3 +814,22 @@ pub fn sum(comptime T: type, slice: []const T) T { | ... | @@ -814,3 +814,22 @@ pub fn sum(comptime T: type, slice: []const T) T { |
| 814 | for (slice) |item| res += item; | 814 | for (slice) |item| res += item; |
| 815 | return res; | 815 | return res; |
| 816 | } | 816 | } |
| | 817 | |
| | 818 | pub fn RingBuffer(comptime T: type, comptime capacity: usize) type { |
| | 819 | return struct { |
| | 820 | items: [capacity]T = undefined, |
| | 821 | len: usize = 0, |
| | 822 | comptime capacity: usize = capacity, |
| | 823 | |
| | 824 | const Self = @This(); |
| | 825 | |
| | 826 | pub fn append(self: *Self, new_item: T) void { |
| | 827 | if (self.len == self.capacity) { |
| | 828 | for (1..self.len) |i| self.items[i - 1] = self.items[i]; |
| | 829 | self.len -= 1; |
| | 830 | } |
| | 831 | self.items[self.len] = new_item; |
| | 832 | self.len += 1; |
| | 833 | } |
| | 834 | }; |
| | 835 | } |
Meghan Denny <hello@nektro.net> 2023-11-22 01:26:43 -08:00