Currently, I am immersing myself in TypeScript with the guidance of Barasat Ali Syed's Deep Dive.
While exploring Arrow Functions and inheritance, I stumbled upon the following code snippet. Could you please assist me in comprehending the significance of the second :string in this particular line: "(b:string) : string"?
class Adder {
constructor(public a: number) {}
// This function can now be safely passed around
add = (b: string): string => {
return this.a + b;
}
}
(b: string): string => { ... }
This arrow function is, in fact, an anonymous function. The :string following the parameters indicates that this function will return a string.
In your Adder class, you have defined a property called add, which is set to an anonymous function. This function expects a string argument named b and returns a string value.
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