compose ()

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true

Composes given functions (in the mathematical sense).

Unlike flow and pipe, functions passed to compose are applied (called) from last to first.

const f = (x: number): number => x * x;
const g = (x: number): string => x.toFixed();
const h = (x: string): boolean => x === '4';

compose(
  h, // 3. true
  g, // 2. 4
  f, // 1. 2
)(2) // 4. true

// gives same result as
h(g(f(2))) // true