Function once

once<T extends (...args: any[]) => any>(func: T): T
Create a function that can only be called once, and repeated calls return the result of the first call

创建只能被调用一次的函数，重复调用返回第一次调用的结果
Type Parameters
- T extends (...args: any[]) => any
  The type of the function / 函数的类型
Parameters
- func: T
  The function to wrap. 要包装的函数
Returns T
A new function that can only be called once. 只能被调用一次的新函数
Remarks
If the wrapped function throws an error on its first call, the called flag remains false, allowing the function to be retried on the next invocation. This implements a retry-on-exception behavior.

如果包装的函数在第一次调用时抛出异常，called 标志保持为 false，允许在下一次调用时重试。这实现了异常重试行为。
Example
```
const add = (a, b) => a + b
const onceAdd = once(add)
onceAdd(1, 2) // => 3
onceAdd(2, 3) // => 3
```
- Defined in src/function/once.ts:26