Exploring Typescript. While browsing through a project's codebase, I stumbled upon the following snippet and am unsure of its validity. Can anyone shed light on what this code is doing? It seems to be dealing with default values, but I'm not entirely sure.
public someFn = function(arg ?: number): void {
console.log(arg);
}
I find the behavior of `arg` quite puzzling. I am also confused about the purpose of `: void` in this context.
If you have any insights, please share. Thank you.
This piece of code is written in Typescript language where the symbol ? denotes a variable that is optional when going through static type checking.
To learn more about optional properties in Typescript, follow this link: Optional Properties
If the variable is not specified during a function call, it will default to undefined.
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