Function concat [src]

Copies each T from slices into a new slice that exactly holds all the elements.

Prototype

pub fn concat(allocator: Allocator, comptime T: type, slices: []const []const T) Allocator.Error![]T

Parameters

allocator: AllocatorT: typeslices: []const []const T

Example

 test concat {
    {
        const str = try concat(testing.allocator, u8, &[_][]const u8{ "abc", "def", "ghi" });
        defer testing.allocator.free(str);
        try testing.expect(eql(u8, str, "abcdefghi"));
    }
    {
        const str = try concat(testing.allocator, u32, &[_][]const u32{
            &[_]u32{ 0, 1 },
            &[_]u32{ 2, 3, 4 },
            &[_]u32{},
            &[_]u32{5},
        });
        defer testing.allocator.free(str);
        try testing.expect(eql(u32, str, &[_]u32{ 0, 1, 2, 3, 4, 5 }));
    }
    {
        const str = try concatWithSentinel(testing.allocator, u8, &[_][]const u8{ "abc", "def", "ghi" }, 0);
        defer testing.allocator.free(str);
        try testing.expectEqualSentinel(u8, 0, str, "abcdefghi");
    }
    {
        const slice = try concatWithSentinel(testing.allocator, u8, &[_][]const u8{}, 0);
        defer testing.allocator.free(slice);
        try testing.expectEqualSentinel(u8, 0, slice, &[_:0]u8{});
    }
    {
        const slice = try concatWithSentinel(testing.allocator, u32, &[_][]const u32{
            &[_]u32{ 0, 1 },
            &[_]u32{ 2, 3, 4 },
            &[_]u32{},
            &[_]u32{5},
        }, 2);
        defer testing.allocator.free(slice);
        try testing.expectEqualSentinel(u32, 2, slice, &[_:2]u32{ 0, 1, 2, 3, 4, 5 });
    }
}

Source

  pub fn concat(allocator: Allocator, comptime T: type, slices: []const []const T) Allocator.Error![]T {
    return concatMaybeSentinel(allocator, T, slices, null);
}  