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Function: filterMap()

Returns an iterable containing the values of iterable transformed by fn in iteration order excluding the values for which fn returns null or undefined.

Example​

console.log(
  pipe(
    [
      { sloth: `sloth party` },
      { notSloth: `building` },
      { sloth: `sloths in trees` },
      { notSloth: `city` },
    ],
    filterMap(object => object.sloth),
    reduce(toArray()),
  ),
)
//=> [ 'sloth party', 'sloths in trees' ]

filterMap(fn)​

filterMap<From, To>(fn): (iterable) => Iterable<NonNullable<To>, any, any>

Returns an iterable containing the values of iterable transformed by fn in iteration order excluding the values for which fn returns null or undefined.

Type Parameters​

• From

• To

Parameters​

• fn

Returns​

Function

Parameters​

• iterable: Iterable<From, any, any>

Returns​

Iterable<NonNullable<To>, any, any>

Example​

console.log(
  pipe(
    [
      { sloth: `sloth party` },
      { notSloth: `building` },
      { sloth: `sloths in trees` },
      { notSloth: `city` },
    ],
    filterMap(object => object.sloth),
    reduce(toArray()),
  ),
)
//=> [ 'sloth party', 'sloths in trees' ]

Defined in​

filters.d.ts:146

filterMap(fn, iterable)​

filterMap<From, To>(fn, iterable): Iterable<NonNullable<To>, any, any>

Returns an iterable containing the values of iterable transformed by fn in iteration order excluding the values for which fn returns null or undefined.

Type Parameters​

• From

• To

Parameters​

• fn

• iterable: Iterable<From, any, any>

Returns​

Iterable<NonNullable<To>, any, any>

Example​

console.log(
  pipe(
    [
      { sloth: `sloth party` },
      { notSloth: `building` },
      { sloth: `sloths in trees` },
      { notSloth: `city` },
    ],
    filterMap(object => object.sloth),
    reduce(toArray()),
  ),
)
//=> [ 'sloth party', 'sloths in trees' ]

Defined in​

filters.d.ts:149