Rust meets Fedora
What is Rust?
Rust is a systems programming language which runs blazing fast , prevents almost all crashes , segfaults and data races. Most of the people now would wonder exactly why do you require another programming language , we already have a lot of them.I'll try to explain exactly why ..
Safety Vs Control
We have often seen this spectrum where , we have C/C++ which has more control of the hardware which it's running on , enabling the developer to optimize the performance by executing finer control over the assembly generated. However, this is not very safe; it's easier to segfault or to cause security bugs like heartbleed.
On the other hand , we have languages like Python , ruby and JS where the developer has very little control of what's going on but they are very safe . They can't get segfaults , you can get exceptions but they are pretty contained . And somewhere in the middle , there's Java and few others which are good mixture of both - control of the hardware they run on and vulnerabilities don't show up much.
Rust is a bit different . Rust doesn't fall in the given spectrum. It gives the developer all the safety and the control.
On the other hand , we have languages like Python , ruby and JS where the developer has very little control of what's going on but they are very safe . They can't get segfaults , you can get exceptions but they are pretty contained . And somewhere in the middle , there's Java and few others which are good mixture of both - control of the hardware they run on and vulnerabilities don't show up much.
Rust is a bit different . Rust doesn't fall in the given spectrum. It gives the developer all the safety and the control.
Specialties of Rust
Well, Rust is a systems programming language like C/C++ but unlike those what it gives the developer fine grained control over memory allocations . Garbage collector is not required anymore . It has a minimal runtime and it's very close to the bare metal . What it implies is , the developer is guaranteed about the performance of the code and also , anyone who knows C/C++ can understand and reason with a rust code.
Rust runs blazing fast , since Rust is a compile language with LLVM as it's backend and it taps in to a large suite of optimizations. In a lot of areas rust can do better than C/C++ .
Rust is safe by default , Rust like JS , Ruby and python is safe by default which means you can't have segfaults , dangling pointers or null pointers .
One of very important feature of Rust is it eliminates data races , now a days we have computers with tons of cores and many threads running in parallel but it's really tough to write parallel code , what elimination of data races does is it simply assures the developer can't write wrong parallel code.
Two Key concepts which eliminates data races :
Ownership :
Variables are moved to new locations, preventing the
previous location from using it.There is only every one owner of data!
Rust is safe by default , Rust like JS , Ruby and python is safe by default which means you can't have segfaults , dangling pointers or null pointers .
One of very important feature of Rust is it eliminates data races , now a days we have computers with tons of cores and many threads running in parallel but it's really tough to write parallel code , what elimination of data races does is it simply assures the developer can't write wrong parallel code.
Two Key concepts which eliminates data races :
Ownership :
Borrowing :Owned values can be borrowed in Rust to allow usage for a certain period of time.
In Fedora 25 & 24
You can do
I have created a simply program to print a statement because printing "hello world" is too mainstream .
That's how I execute it and get the the printed message.
Want to contribute to testing in Fedora for Rust
dnf install rust and get started with rust. Here's the demo program on Fedora 25.
I have created a simply program to print a statement because printing "hello world" is too mainstream .
Want to contribute to testing in Fedora for Rust
Execute : sudo dnf --enablerepo=updates-testing --refresh --best install rust
Fedora 24 https://bodhi.fedoraproject.org/updates/FEDORA-2016-c5a0802802
Feodra 25 https://bodhi.fedoraproject.org/updates/FEDORA-2016-08169a6354
Drop us a mail at test@lists.fedoraproject.org or #fedora-qa over freenode to get started!
Feodra 25 https://bodhi.fedoraproject.org/updates/FEDORA-2016-08169a6354
Drop us a mail at test@lists.fedoraproject.org or #fedora-qa over freenode to get started!
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