Rust: What is Ownership and Borrowing?

One of the biggest hurdles for those learning Rust is the whole concept of ownership and borrowing. It can be a little tricky to understand, but once you do you will understand why Rust is called a memory safe language.





#garyexplains

[infinikeys]

Hey Gary, your 2 Rust videos are simply the best for new Rust programmer so far in my opinions. Thank you very much for these helpful videos.

[swfsql]

at 1:23, the error refers to using-after-move, since the string was moved to s2. I believe that the original "hello" literal string stays in static memory, and as such this literal string is not really owned by anyone.
So there is the literal string "hello"; there is also s1, which was a heap string "hello", and later that heap string is moved to s2.

[theJesai]

I loved your ARM video, Gary! Keep up the amazing technical dives :D

[shafayat]

Really appreciate the two videos, sir. Love your style of explanations. Best for people with some basic knowledge of C/C++ to get upto speed. You could probably make a course out of this <3 It's just sad that the language is yet to be mainstream cause clearly the lack of views is not because of you.

[Gordolone]

Very nice video, you really made the concept clear and understandable, nice!

[autohmae]

Very good you are doing more Rust videos, I enjoy them !

[RaxTubeYou]

Gary, this is excellent, the best explanation I have seen. Thanks for making such useful videos

[itssanchez]

Really useful video, I just started looking into Rust

[hansdampf]

The ending of a scope in rust is not when the variable was last mentioned, it is when the scope ends that the owner of the variable was declared in or moved into. (With a })

[tanuvishu]

One of the best explanation of RUST ownership and borrowing that I have seen

[besher]

I find the videos you share very helpful. Thanks a lot.

[dracula]

thanks alot! if you can do more rust videos!

[daviidon]

It's weird that unsafe code is preferred to cloning. I know heap operations are expensive but why sacrifice safety for speed?

[wprayudo]

rust & risc-V & blockchain thing . any relation on it ??

[corlaez]

Amazing video, love it. I really want to learn rust and I am really excited about redox os future

[mhnatiuk]

about pointers / references, isn't it that in c++ we have pointers AND references (the latter cannot be changed to point to anything other) and Rust uses references only?

[mikicerise]

Is there any way to explicitly unborrow something? What if you're in multiple threads?

[abhisheksinha]

Great explanation. More videos please 🙏🙏

[hansisbrucker]

Iirc the borrow once from a structure will be addressed in the upcoming edition (2021) 🤔

[drac]

Why use
&mut string_value

Why not

&string_value
?