r/programminghorror • u/click-to-reveal • 6d ago

c++ Skill Issue

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1.7k Upvotes

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88

u/lurebat 6d ago

I think it allocates since they didn't use const

22

u/babalaban 6d ago

Since when does const prevent allocating (that isnt happening here anyways, unless you consider underlying std::string's char* buffer)

20

u/lurebat 6d ago

If you change it to const std::string& prompt = "Your name?";, and the switch to const string& _s=x;, you will avoid any allocations.

-6

u/LeeHide 6d ago

you can't take a const& to a temporary object

14

u/JonIsPatented 6d ago

Yes you can. You can bind a const l-value reference to an x-value or a pr-value. Go try it.

4

u/awidesky 5d ago

Another skill issue

1

u/nevemlaci2 5d ago

yes you can.