How to determine the buffer size of a channel without an explicit buffer in programming languages

In Go, if a channel is created without specifying a buffer, it is unbuffered, meaning its buffer size is 0. It is not possible to determine the size of such a channel programmatically, as the standard library does not provide an API to get the channel's buffer size.

Example:

ch := make(chan int) // unbuffered channel
// Buffer size is 0, but this value cannot be obtained through code

If the channel is buffered, for example make(chan int, 5), then the buffer size is known from the code, but it cannot be obtained at runtime. Usually, the buffer size is explicitly set during creation and stored in the code, not determined dynamically.