Function inertFilterMap

inertFilterMap<T, U = T>(
    arr: T[],
    callbackfn: (value: T, index: number, arr: T[]) => U | undefined,
    thisArg?: any,
): Defined<U>[]
Lazy filterMap that avoids creating a new array when possible.
Type Parameters
- T
- U = T
Parameters
- arr: T[]
- callbackfn: (value: T, index: number, arr: T[]) => U | undefined
  Return undefined to filter out the item, or return a value to map the item.
- OptionalthisArg: any
Returns Defined<U>[]
the original array if callbackfn returns the same value for all items, otherwise a new array with the mapped items.
- Defined in array.ts:14
inertFilterMap<T, U = T>(
    arr: T[] | undefined,
    callbackfn: (value: T, index: number, arr: T[]) => U | undefined,
    thisArg?: any,
): Defined<U>[] | undefined
Lazy filterMap that avoids creating a new array when possible.
Type Parameters
- T
- U = T
Parameters
- arr: T[] | undefined
- callbackfn: (value: T, index: number, arr: T[]) => U | undefined
  Return undefined to filter out the item, or return a value to map the item.
- OptionalthisArg: any
Returns Defined<U>[] | undefined
the original array if callbackfn returns the same value for all items, otherwise a new array with the mapped items.
- Defined in array.ts:19
inertFilterMap<T, U = T>(
    arr: readonly T[],
    callbackfn: (value: T, index: number, arr: readonly T[]) => U | undefined,
    thisArg?: any,
): readonly Defined<U>[]
Lazy filterMap that avoids creating a new array when possible.
Type Parameters
- T
- U = T
Parameters
- arr: readonly T[]
- callbackfn: (value: T, index: number, arr: readonly T[]) => U | undefined
  Return undefined to filter out the item, or return a value to map the item.
- OptionalthisArg: any
Returns readonly Defined<U>[]
the original array if callbackfn returns the same value for all items, otherwise a new array with the mapped items.
- Defined in array.ts:24
inertFilterMap<T, U = T>(
    arr: readonly T[] | undefined,
    callbackfn: (value: T, index: number, arr: readonly T[]) => U | undefined,
    thisArg?: any,
): readonly Defined<U>[] | undefined
Lazy filterMap that avoids creating a new array when possible.
Type Parameters
- T
- U = T
Parameters
- arr: readonly T[] | undefined
- callbackfn: (value: T, index: number, arr: readonly T[]) => U | undefined
  Return undefined to filter out the item, or return a value to map the item.
- OptionalthisArg: any
Returns readonly Defined<U>[] | undefined
the original array if callbackfn returns the same value for all items, otherwise a new array with the mapped items.
- Defined in array.ts:29