BloombergLP::bdlc::Queue::front

Declared in <bdlc_queue.h>

Return a reference to the non‐modifiable element at the front of this queue. The reference will remain valid as long as this queue is not destroyed or modified (e.g., via insert, remove, or append). The behavior is undefined if this queue is empty. Note that this function is logically equivalent to: ` operator `

non‐modifiable reference to the front element

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