this post was submitted on 27 Feb 2025
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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What programming language is this even?!
Looks like C++.
TIL that you can declare return types this way in C++.
I never understood why they added that
Among other things it lets you define the return type in terms of the arguments to the function.
because explicitly declaring types can be redundant, if the compiler knows a lot of the times you should also know
also because some types are extremely cursed: see std views/ranges
They're useful for templates because the trailing version is resolved later
Why would anyone bother writing it like that? That just seems like
int main()with extra steps. Like does auto enable some compiler optimisation of the return type that I'm not aware of?Defining the return type that way can be used when dealing with template sorcery - there's no use for it here though, not even for readability in any way.