pub fn backPtr(deque: *const Self) ?*T
Return the last item in the deque or null if empty.
deque: *const Self
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pub fn backPtr(deque: *const Self) ?*T { if (deque.len == 0) return null; return &deque.buffer[deque.bufferIndex(deque.len - 1)]; }
Return the last item in the deque or null if empty.