Function foldl

foldl<const Ar extends readonly unknown[], P>(
    array: Ar,
    callbackfn: (
        previousValue: P,
        currentValue: Ar[number],
        currentIndex: ArrayIndex<Ar>,
    ) => P,
    initialValue: P,
): P
Reduces an array to a single value from left to right.
Type Parameters
- const Ar extends readonly unknown[]
- P
Parameters
- array: Ar
- callbackfn: (previousValue: P, currentValue: Ar[number], currentIndex: ArrayIndex<Ar>) => P
- initialValue: P
Returns P
Example
```
const words = ['Ada', 'Lovelace'];

const totalLength = Arr.foldl(words, (acc, word) => acc + word.length, 0);
const concat = Arr.foldl<string | number, string>(
  (acc, value) => `${acc}-${value}`,
  'items',
)(words);

assert(totalLength === 11);
assert(concat === 'items-Ada-Lovelace');
```
- Defined in src/array/impl/array-utils-reducing-value.mts:322
foldl<E, P>(
    callbackfn: (
        previousValue: P,
        currentValue: E,
        currentIndex: Uint32,
    ) => P,
    initialValue: P,
): (array: readonly E[]) => P
Reduces an array to a single value from left to right.
Type Parameters
- E
- P
Parameters
- callbackfn: (previousValue: P, currentValue: E, currentIndex: Uint32) => P
- initialValue: P
Returns (array: readonly E[]) => P
Example
```
const words = ['Ada', 'Lovelace'];

const totalLength = Arr.foldl(words, (acc, word) => acc + word.length, 0);
const concat = Arr.foldl<string | number, string>(
  (acc, value) => `${acc}-${value}`,
  'items',
)(words);

assert(totalLength === 11);
assert(concat === 'items-Ada-Lovelace');
```
- Defined in src/array/impl/array-utils-reducing-value.mts:332

Function foldl

Type Parameters

Parameters

Returns P

Example

Type Parameters

Parameters

Returns (array: readonly E[]) => P

Example

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