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std.bounded_array: support inserting a new value at the end (#10340)

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Since `BoundedArray.insert` internally reserves space for the element
to be inserted, it can support inserting at the position that is
the current length of the array. Change the check for the insertion position
to allow this.
This commit is contained in:
Arnav Singh 2021-12-15 11:10:34 -08:00 committed by GitHub
parent 87b843ef08
commit 09f70bdd91
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1 changed files with 5 additions and 1 deletions
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6
lib/std/bounded_array.zig
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@ -121,7 +121,7 @@ pub fn BoundedArray(comptime T: type, comptime capacity: usize) type {
/// Insert `item` at index `i` by moving `slice[n .. slice.len]` to make room.
/// This operation is O(N).
pub fn insert(self: *Self, i: usize, item: T) !void {
if (i >= self.len) {
if (i > self.len) {
return error.IndexOutOfBounds;
}
_ = try self.addOne();
@ -289,6 +289,10 @@ test "BoundedArray" {
try testing.expectEqual(a.get(9), 3);
try testing.expectEqual(a.get(10), 4);
try a.insert(11, 0xbb);
try testing.expectEqual(a.len, 12);
try testing.expectEqual(a.pop(), 0xbb);
try a.appendSlice(&x);
try testing.expectEqual(a.len, 11 + x.len);