Function toNumber

toNumber(v: unknown): number
Converts a value to a number

将值转换为数字
Parameters
- v: unknown
  The value to convert. 要转换的值
Returns number
The converted number, or NaN if conversion is not possible. 转换后的数字，如果无法转换则返回 NaN
Example
```
toNumber('42') // => 42
toNumber('hello') // => NaN
toNumber(undefined) // => NaN
```
- Defined in src/guard/to-number.ts:20