What is a specific overloaded signature in typescript

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recently reading the Chinese version of learning typescript () in this book, the third chapter of the function has a section called "specific overloaded signature". I don"t understand what "specific overloaded signature" is, and there is no explanation in the book. To push the concept back, I don"t even know what is meant by "overloaded signature" and what is called "signature".

can you help me explain what these three nouns mean?

Jun.19,2021

I haven't seen the book, but I think it should be a way for ts to implement function polymorphism

about " specific signature "
about overloading
the example in overloading should be the so-called "specific overloaded signature"

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https://www.zhihu.com/questio. second answer

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