Rust Programming Language Interview Questions and Answers

It is a choice of developers. To understand advantages, let’s compare Rust with the similar programming language. However, if you want to get into complete details about Rust programming language, we are also mentioning some of the Rust Programming Language Interview Questions and Answers for all. Go through it and feel like you learnt so many things today.

Rust Vs C++

Rust provides safety where C++ is not even capable enough to provide protection to its own abstraction and even the programmers to protect theirs. If any mistake is committed in C++, it shows arbitrary behaviour - technically, it means it has no meaning. Rust isolates you from that part and lets you concentrate you on the problem that you are trying to solve.

Rust Vs Java.

Automatic garbage collection provides rust with an edge over Java. Java is faster but even it can’t match with the speed of C in some domains.

Note it: Rust programming language can do it easily.

Rust Vs Python:

Good Design gives an edge to Rust over Python. Lambda can’t even hold any statement. In Rust, everything is defined in expressions, which means Language part composes in a much better way.

Rust uses a static garbage collector. It works on the principle of automatic memory management which means it automatically recycles the memory that will not be used again.

The easiest way to use a command line argument in Rust is to put an iterator over the input arguments. Users can access the command line arguments by using functions such as
std::env::args_os or std::env::args

Move semantics, minimal runtime, efficient C bindings, trait-based generics, zero cost abstractions, pattern matching, type interface and zero cost abstractions.

No, Rust doesn’t guarantee TOC (Tail Call Optimization). Not even the standard library is required to compile the rust code. In these cases, the run time is similar to that of C programming language.

No, the values of all types in Rust are moved via memcpy. It moves everything that doesn’t have a copy constructor or doesn’t implement the copy trait.

Create a file name main.rs and the below-given code in it.
fn main() {
    println!("Hello, Rust!");
}

For macOS and Linux to run open terminal, put below command
$ rustc main.rs
$ ./main

It's a build system and package manager built for Rust users to manager projects in it. The Cargo system manages three things for users, building code, downloading the libraries, and rebuilding those libraries.

When a user runs cargo build command it automatically creates a file named as Cargo.lock to keep track of dependencies in the user application.

By far, quite a number of string types are available to be used with Rust, choosing one from these, CStr, str, Slice, CString, OsString, OsStr and Owned type, would be more preferable.