Ada Programming/Attributes/'Image
Description
[edit | edit source]X'Image(Y) is an Ada attribute where X is any discrete type and Y is an instance of that type. This attribute returns a string representation of the value passed as input.
This attribute is a useful way to automatically convert from a type value to a string suitable for output.
In Ada 2022 a simplified version was added:
Y’Image return String
Image of the value of Y as a String.
Example
[edit | edit source]type My_Enum is (Enum1, Enum2, Enum3);
...
pragma Assert (My_Enum'Image (Enum1) = "ENUM1");
pragma Assert (Enum1'Image = "ENUM1"); -- Ada 2022