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What do three dots above and below code mean?

What do three dots above and below code mean?

Three dots represent spread operators or rest parameters. It allows an array expression or string or anything which can be iterating to be expanded in places where zero or more arguments for function calls or elements for array are expected.

What do three horizontal dots mean?

The three dots are called an “ellipsis” (pl. “ellipses”) and the symbol has various uses. When quoting text, an ellipsis is used to indicate where a word or passage has been intentionally omitted by the quoter.

What does 3 dots in the shape of a triangle mean?

therefore sign
In logical argument and mathematical proof, the therefore sign, ∴, is generally used before a logical consequence, such as the conclusion of a syllogism. The symbol consists of three dots placed in an upright triangle and is read therefore.

What does three dots mean in spread syntax?

Spread syntax (three dots) in JavaScript Spread syntaxwhich is used by typing three dots (…) in JavaScript. It allows an array expression or string or anything which can be iterating to be expanded in places where zero or more arguments for function calls or elements for array are expected.

What does three dots ( … ) mean in JavaScript?

👉 Conclusion. When three dots (…) is at the end of function parameters, it’s “rest parameters” and gathers the rest of the list of arguments into an array. When three dots (…) occurs in a function call or alike, it’s called a “spread operator” and expands an array into a list. Thanks for reading.

How is the spread operator useful in JavaScript?

The spread operator allows us to expand elements. With rest parameters we were able to get a list of arguments into an array. spread operators however, let us unpack elements in an array to single/individual arguments. Some scenarios where this capability is useful include:

What do you mean by spread syntax in JavaScript?

Spread syntax (three dots) in JavaScript. Spread syntaxwhich is used by typing three dots (…) in JavaScript. It allows an array expression or string or anything which can be iterating to be expanded in places where zero or more arguments for function calls or elements for array are expected.

Spread syntax (three dots) in JavaScript Spread syntaxwhich is used by typing three dots (…) in JavaScript. It allows an array expression or string or anything which can be iterating to be expanded in places where zero or more arguments for function calls or elements for array are expected.

How does the three dots operator work in JavaScript?

Three dots The JavaScript rest operator collects the arguments list passed to a function on invocation or collects the pieces after destructuring an array. A case when the operator gathers the rest remained after the operation. The JavaScript spread operator constructs arrays or sets the function arguments on invocation from an array.

How is the spread operator used in typescript?

Using spread operator, you can write above statement like this. You can use spread operator to create arrays from existing arrays in given fashion. You can also use spread operator to create objects from existing object in given fashion.

Spread syntax (three dots) in JavaScript. Spread syntaxwhich is used by typing three dots (…) in JavaScript. It allows an array expression or string or anything which can be iterating to be expanded in places where zero or more arguments for function calls or elements for array are expected.