How to transfer type in Typescript
interface IDropDownProps {
items: any;
renderItems: (item: any) => React.ReactElement<any>;
}
renderItems is a function, which takes the item of items and return an according React Element.
What I want to do is to pass the type from items to renderItems, so I can do something like:
interface IDropDownProps {
items: Array<T>;
renderItems: (item: T) => React.ReactElement<any>;
}
Otherwise, I need to cast the type everytime I declare that renderItems.
Is it possible and how to do it? Thanks :)
typescript
asked Nov 18 '18 at 8:30
Albert GaoAlbert Gao
1,50331942
add a comment |
interface IDropDownProps {
items: any;
renderItems: (item: any) => React.ReactElement<any>;
}
renderItems is a function, which takes the item of items and return an according React Element.
What I want to do is to pass the type from items to renderItems, so I can do something like:
interface IDropDownProps {
items: Array<T>;
renderItems: (item: T) => React.ReactElement<any>;
}
Otherwise, I need to cast the type everytime I declare that renderItems.
Is it possible and how to do it? Thanks :)
typescript
asked Nov 18 '18 at 8:30
Albert GaoAlbert Gao
1,50331942
add a comment |
interface IDropDownProps {
items: any;
renderItems: (item: any) => React.ReactElement<any>;
}
renderItems is a function, which takes the item of items and return an according React Element.
What I want to do is to pass the type from items to renderItems, so I can do something like:
interface IDropDownProps {
items: Array<T>;
renderItems: (item: T) => React.ReactElement<any>;
}
Otherwise, I need to cast the type everytime I declare that renderItems.
Is it possible and how to do it? Thanks :)
typescript
asked Nov 18 '18 at 8:30
Albert GaoAlbert Gao
1,50331942
interface IDropDownProps {
items: any;
renderItems: (item: any) => React.ReactElement<any>;
}
renderItems is a function, which takes the item of items and return an according React Element.
What I want to do is to pass the type from items to renderItems, so I can do something like:
interface IDropDownProps {
items: Array<T>;
renderItems: (item: T) => React.ReactElement<any>;
}
Otherwise, I need to cast the type everytime I declare that renderItems.
Is it possible and how to do it? Thanks :)
typescript
typescript
asked Nov 18 '18 at 8:30
Albert GaoAlbert Gao
1,50331942
asked Nov 18 '18 at 8:30
Albert GaoAlbert Gao
1,50331942
asked Nov 18 '18 at 8:30
Albert GaoAlbert Gao
1,50331942
asked Nov 18 '18 at 8:30
Albert GaoAlbert Gao
1,50331942
asked Nov 18 '18 at 8:30
Albert GaoAlbert Gao
1,50331942
1,50331942
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Yes you can. You need to define T at interface level in your interface though.
interface GenericIf<T> { }
interface IDropDownProps<T> {
items: Array<T>;
renderItems: (item: T) => GenericIf<T>;
}
answered Nov 18 '18 at 8:45
toskvtoskv
18.2k53848
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Yes you can. You need to define T at interface level in your interface though.
interface GenericIf<T> { }
interface IDropDownProps<T> {
items: Array<T>;
renderItems: (item: T) => GenericIf<T>;
}
answered Nov 18 '18 at 8:45
toskvtoskv
18.2k53848
add a comment |
Yes you can. You need to define T at interface level in your interface though.
interface GenericIf<T> { }
interface IDropDownProps<T> {
items: Array<T>;
renderItems: (item: T) => GenericIf<T>;
}
answered Nov 18 '18 at 8:45
toskvtoskv
18.2k53848
add a comment |
Yes you can. You need to define T at interface level in your interface though.
interface GenericIf<T> { }
interface IDropDownProps<T> {
items: Array<T>;
renderItems: (item: T) => GenericIf<T>;
}
answered Nov 18 '18 at 8:45
toskvtoskv
18.2k53848
Yes you can. You need to define T at interface level in your interface though.
interface GenericIf<T> { }
interface IDropDownProps<T> {
items: Array<T>;
renderItems: (item: T) => GenericIf<T>;
}
answered Nov 18 '18 at 8:45
toskvtoskv
18.2k53848
answered Nov 18 '18 at 8:45
toskvtoskv
18.2k53848
answered Nov 18 '18 at 8:45
toskvtoskv
18.2k53848
answered Nov 18 '18 at 8:45
toskvtoskv
18.2k53848
18.2k53848
add a comment |
add a comment |
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