is_null
is_null
Function
Determine whether the value is Null.
Syntax
is_null(value)
Parameters
| Parameters | Type | Required | Default value | Description |
|---|---|---|---|---|
| value | Any | No | None | The value to be judged. |
Return value
| Type | Description |
|---|---|
| Bool | Returns true when the value is Null; returns false if the unpassed parameters are missing values. |
Example
result = is_null(null) // Output: true print result
Notes
- Empty is not equivalent to Null, and no parameters passed are not equivalent to Null.