Clean Coding

Clean Coding

Clean Coding Tips


1.Variable, Functions, ParametersNaming.

2.Comments, Documenting Code.

3.Code Breakdown (also called SRP).

4.Code Readability.

1.Variable, Functions & Parameters Naming – The first thing we all face while writing code is

Flutter Clean Coding

Variables, Constants, Functions. These are the very start of your code. Naming it smartly will make it much much easier for you and also for the other developer working with you or reading your code. I had witnessed many developer mostly juniors/freshers making these silly mistakes while naming variable/functions and through the time this becomes habit “A BAD HABBIT“. This small but quite important tip couldn’t be neglected.

As you write code you name your variables and functions that you like. Instead, your naming should be this much good that it reflects its purpose. Same goes for the functions. Every function name should reflect its purpose. What that function does. Because you are not the only one who will be working on this or reading your code, who knows when others will have to work on it.


2.Comments, Documenting Code


Comments are your besties. When it comes to clarification of code sometimes naming couldn’t help you out. So just write comments wherever necessary. Comments can help us explain to other people why we wrote what we wrote, and why we wrote it in that specific way. As a result, other people will not have to guess. One important point to note here while adding comments to your code is always be clear and careful where to add comment and why you need this. Irrelevant or unnecessary commenting can make your code hideous


instead of clean code. Try to add short comments up to 2 lines.

Returns the magnitude of a vector in three dimensions.

func magnitude3D(x: Double, y: Double, z: Double) -> Double {

return sqrt(pow(x, 2) + pow(y, 2) + pow(z, 2))}

clean coding


3.Code Breakdown (Single Responsibility Principle) – This tip is very important for a clean code. Lets


discuss what SRP means. SRP is Single Responsibility Principle means one function should perform only one task. We shouldn’t create mess that we often do. One should break functions into subs and each will have its unique responsibility.


I noticed many in my company doing this (Sometimes me also). We simply write down a function and starts writing code in it no matter what the name is, we just put everything in it. They just become unpredictable.


Example – We write code for login. We created a function for login user.


func LoginUser(email:String, password:String)


if !email.isEmpty && email.isValid{ if !password.isEmpty{






See here we named function for login but we are using it for validation and login. It should only login user. We can breakdown it into two function one for validation and other for login. Code readability will improve a lot and one can predict outputs, functions become predictable.

func validateInputs(email:String, password:String)->Bool{

if email.isValid {

if password.isValid{

return true



return false



return false



func loginUser(){

if validInputs{




4.Code Readability

The last and the most basic tip, is to keep your code as simple and readable as possible. Don’t get fancy if you don’t have to, and don’t over-complicate problems (a common issue among software developers). By keeping it simple you can produce higher quality code, solve problems faster, work better.

#Content Credit: Chanpreet Singh

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