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2026/8/22 -Optional parameters allow a JavaScript function to work even when some arguments are not provided. They make functions more flexible and reusable.

2026/11/3 -The arguments object is a local variable available within all non-arrow functions. You can refer to a function's arguments inside that function by using its ...

2026/1/17 -You create an optional argument by assigning a default value in the function definition. If the caller doesn't pass that argument, Python uses the default. " ...

2026/1/7 -I would typically use something like this: type Options = { a: string; b?: boolean }; function test({ a, b = true }: Options) { // … }.

2026/10/15 -You can also have optional parameters by adding a question mark ? after the name of the parameter and before the colon : . 1function ...

2026/4/13 -It's very common when dealing with optional arguments to have a local variable that is assigned either a default value or the value of a present argument, ...

2026/1/27 -Learn how to use different parameters within your custom functions, such as Excel ranges, optional parameters, invocation context, and more.

2026/2/9 -This is very hard for me to find info about: how to define the argument types,; how to define optional arguments,; how to define defaults,; how to document it ...

2026/9/2 -Named parameters are optional unless they're explicitly marked as required . When defining a function, use {param1, param2, …} to specify named parameters. If ...