Going over ownership in the #LearnRust book again and it makes so much more sense this time around.

#rustlang #rust #RustTips #LearnRust

🦀 #RustQuiz

What is the output of this?

A. Error
B. RustJsPython
C. (Rust, Js, Python)
D. Rust

(Not hard/tricky or unique as #RustChallenge, just simple quizzes)

#rustlang #rustquiz #rust #rusttips #LearnRust

✨ Rust Challenge explained

Ans:
2. A gives output and B gives error

In `A` code:
👉 x will be assigned to i8 type since we are using i8 to compare in assert_eq.

👉 x.pow(6) will be 2 power 6 which is 64, it will work perfectly

In `B` code:

👉 x will be assigned default to i32

👉 But in second line you will get ambiguity error 🤯

👉 And compiler will ask to specify the type for x explicitly

#rustlang #learnrust #rusttips #rust

#RustChallenge

🦀 Fix the following code

🪲 Error: "cannot borrow `x` as mutable because it is also borrowed as immutable"

Playground link:
https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=b13fc771b4c2ea39d490375c54fd5a4d

👉 You can answer either with fixed playground link or just explanation (No poll)

#rustlang #rust #LearnRust

✨ Yes, the answer is C

It prints:
-10
+100

🎯 What is the use of `+` in format string?

👉 By default, number sign is not printed for positive numbers

👉 We use `+` to print sign also

print!("{:+} {:+}", 1, -2);

It will print
+1 -2

#rustlang #rusttips #rust #LearnRust

🦀 Format String tricks - Minimum width

👉 You can set minimum width for the characters that gets printed

Eg:
{var_name:min_width}

👉 Helps to ensure that fields in the output are of a uniform width

https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=f40817063b2c5dbf2f77993e1cc496d5

#rustlang #RustTips #rust #LearnRust

✨ Using variable inside Format String

👉 It appears many people are not aware of this syntax that was introduced in Rust 1.58(2022/01/13)

👉 You can also use format specifiers along with it

#rustlang #rusttips #rust #learnrust #programming

Hot take: learning rust is easy, I learnt it in one day by sitting down and just coding for hours at a time. I know I prb learned way less than half the language but at least I'm to the point where I can write a semi complex program which implements structs, traits, functions and implementation blocks etc. #rust #developer #learnrust #foss

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Then join us #Rustacean's on the exhilarating ride that is learning #Rust!

(and if you like crabs 🙂 :ferris: 🎡 )

#RustLang #Inspiration #Learning #LearnRust #Learn

I solved the second part of day 3 challenge in #Rust using a generic function - ridiculously hard to get the types right that it compiles, but I think I understand the gist of it.

https://codeberg.org/ashwinvis/advent-of-code/src/commit/af43301e5d9e01f7abdccfb5b2eebb017dac0e98/2022/src/day3.rs#L7-L18

#LearnRust #AdventOfCode

Wait, is this...a Ferris wheel!? :awesome:

🎡

Do you know what that means?

It means you should go along for the beautiful and exhilarating ride that learning #Rust is.

And Ferris, the crab, will always be on your side, so you have no reason to panic!. :ferris: 🙂

#LearnRust #Ferris RustLang #FerrisWheel #Emoji

I just completed "Calorie Counting" - Day 1 - Advent of Code 2022 #AdventOfCode https://adventofcode.com/2022/day/1

Yes, I know. It took a long time to do both parts. But hey, great opportunity to #LearnRust.

Criticisms welcome:
https://codeberg.org/ashwinvis/advent-of-code/src/branch/main/2022/src/day1.rs

#Rust #adventofcode2022

Once again, trying to pick up #Rust via solving #AdventOfCode puzzles. I understand most of the things now, but it is still taking time to implement the algorithm I have in mind.

One thing I don't get is why a few methods return a Some / None option and others return a Ok / Err objects. Why do we have two such constructs? Aren't they similar?

#learnrust #AdventOfCode2022