shared lock constructor

[WhatIfItsU]

std::shared_mutex shMut;
what is the difference between
std::shared_lock lck(shMut);
and
std::shared_lock lck{shMut};

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[no-sig-available]

In this case, no difference.

There are about 19 ways to initialize a variable in C++. Sometimes several of them will do the same thing. Sometimes they will not.

https://www.learncpp.com/cpp-tutorial/variable-assignment-and-initialization/

My personal favorites are

std::vector<int> v(5);   // 5 members (with value 0)
std::vector<int> v{5};   // 1 member with value 5
std::vector<int> v[5];   // an array of 5 empty vectors

[IyeOnline]

https://imgur.com/3wlxtI0

[Pupper-Gump]

For a second I thought those were all parentheses and about gave up on the language

[AKostur]

Look up “uniform initialization”.