How does the spread operator within the array destructuring of y3 work? The result would contain both ‘lizard’ and ‘spock’, but because of the spread operator around the square brackets, it somehow only contains ‘lizard’. Thanks in advance for the help. Answer In the const …
Tag: spread-syntax
How to conditionally add a key to an object?
Consider these types: I want to convert an object of type A into B by overwriting some keys and adding keys conditionally depending on whether the original object has them: TypeScript throws this error: Why is it inferring b in this way? Is there a way to work around it? Answer It’s a combination of two…
Is there an easy way to change one value in a nested json data with TypeScript?
TypeScript version: ^3.5.3 For this json It can be changed to a new title with spread syntax as The final newConfig data will be But in this case Also want to change title’s value. Tried It will break the pre-defined json schema: So is there an easy way to overwrite only one item in this kind of json? A…
How to use a spread or map operator to apply this formula to an array of Uint16 pairs?
I’ve been trying to better understand the spread and/or map operator, specifically how to apply math using it. I have an array of two Uint16 number pairs like this: I would like to use the spread or map operator to apply the following formula to each pair. The formula combines the pair into Uint32, then…