What are Function Overloads in TypeScript?

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Have you ever been looking through the type definitions of a library and seen a function declared multiple times, all taking slightly different arguments, and wondered what was going on?

This is called function overloading, or method overloading and it allows you to define a function that may have several different parameter types.

In plain JavaScript, we can do this by testing a parameter to determine what it is. Without method overloading, or destroying your functions parameter types, this wouldn't be possible in TypeScript.

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I like your pace/explanations. Thanks for the vid!

sashaikevich
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This is one place where Java makes much more sence. I would rather write functions with different names in js or ts.

royz_
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Great video again Tom. I see those errors all the time and now I know what they mean. Although, I wonder why you need overloads at all. Wouldn't it be better just to have different function names instead of having identical function names with different definitions?

FudgeRaco
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Thanks for the great content!! Can you please tell me how do u print the output in tables ? What is the script "yarn 3"

ivankraev