Provided by: libstdc++-7-doc_7.5.0-6ubuntu2_all 

NAME
std::defer_lock_t - Do not acquire ownership of the mutex.
SYNOPSIS
Detailed Description
Do not acquire ownership of the mutex.
Definition at line 132 of file std_mutex.h.
Author
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libstdc++ Thu Mar 26 2020 std::defer_lock_t(3cxx)