> For the complete documentation index, see [llms.txt](https://typescript-jp.gitbook.io/deep-dive/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://typescript-jp.gitbook.io/deep-dive/main-1/currying.md).

# Currying

単にアロー関数のチェーンを使ってください:

```typescript
// A curried function
let add = (x: number) => (y: number) => x + y;

// Simple usage
add(123)(456);

// partially applied
let add123 = add(123);

// fully apply the function
add123(456);
```