Motivation: HTTP calls should be mocked, we don’t want to make HTTP calls every time we run our tests and it also makes them faster to run! The tutorial will be referring to httpmock v0.4.2 mocking library (There are other mocking libraries like mockito Where to begin? Let’s start with how you can…

Let’s start with a struct Client that contains a verifier struct which helps us perform verification on the responses fetched by the client struct Verifier {} impl Verifier { fn verify() { println!("Verification Successful!"); } } pub struct Client { verifier: Verifier } What’s wrong with the above implementation? let’s…

Have you ever wanted to define default values for your structs, read below to learn how Let’s define a struct type A with 3 fields struct A { val_b: u32, val_c: u32, val_d: u32 } Below is how we implement the Default Trait for Struct A // We need to…

Unrecoverable Errors panic keyword (causes the program to terminate) fn main() { panic!("Terminate!"); println!("Hello world!"); } For the above code snippet, we get the following output: Finished dev [unoptimized + debuginfo] target(s) in 1.30s Running `target/debug/playground` thread 'main' panicked at 'Terminate', src/main.rs:2:5 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

char - holds a character; size : 4 bytes (it holds unicode scalar values and each is 21-bits long) let a: char = 'a'; // "" is used for string slices bool - true or false; size: size : 1 byte let a: bool = true; let b = false; …