fn removeByIndex(self: *Self, idx: usize) void self: *Selfidx: usize1227
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1233 fn removeByIndex(self: *Self, idx: usize) void {
self.metadata.?[idx].remove();
self.keys()[idx] = undefined;
self.values()[idx] = undefined;
self.size -= 1;
self.available += 1;
}