CODEWITHSUNDEEP
flutterdart
AKushWarrior
AKushWarrior

Reputation: 544

Is there an efficiency reason to use the => syntax for getters in dart?

So, coming from Java, I'm used to writing traditional syntax for Dart. Thus, I have a tendency to write my getters:

int get foo {
   return 0;
}

However, I've found the => syntax, which is more concise:

int get foo => 0;

I can't find what exactly this => syntax does: is it just shorthand, or does it have an efficiency boost? If it's the latter, then I will port my current projects to using it; otherwise, I will just follow the convention in the future. (I can't provide a specific example, due to some strict regulations on sharing code.)

Upvotes: 1

Views: 821

Answers (2)

Kavin-K
Kavin-K

Reputation: 2117

That fat arrow => syntax is just a short hand for returning an expression and is similar to,

int getSomething () { 
   return something; 
}

you can find about this and more in here

Upvotes: 3

MichaelM
MichaelM

Reputation: 5818

From the Dart Language tour:

The => expr syntax is a shorthand for { return expr; }.

There isn't a performance improvement from using one or the other, arrow functions are just more concise and (in my opinion) quite often easier to read.

Upvotes: 3

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