Friday, May 25, 2018

Rust-lang learning continuation...

I tried to start again to read on the Rust-Lang tutorials . I thought , i can start with web development in Rust. Usually I directly jump to advanced side of a language and stop it in a few days :-).  Most of the languages I tried that way are ok to start, But Rust is a little more difficult .

For Rust , directly jumping to web development is really tough without understanding the basics. But I am not going to change that method.( really its like ,going back and forth )


Rocket is similar to Flask or Django .. but Rust syntax is killing me.. I can't blame Rust, as it is trying implement safe code.  Rust compiler is so rude, seems like  it won't allow me to compile a single program :-)

Todays learning:




&'static str

"This basically reads as "a reference to a string slice with the lifetime of static", which means that the string has a lifetime of the global scope"

& is familar symbol for programmers, it is used to reference a variable. Generally to get the address of variable .

just refreshed here - https://www.cs.fsu.edu/~myers/c++/notes/references.html

But what is  ' symbol , this is something new to me. it is the lifetime. other programming languages have the scope of the variable. But those languages compilers are not always smart enough to understand the scope of the variables or in other words Rust-lang push to define the life time of the variables for each functions. ( From this, I hope compiler can do the garbage collection by itself)

read more: https://www.quora.com/What-is-the-meaning-of-in-Rust