6.5 Constants
|
constant |
::= |
integer-literal |
| |
∣ |
float-literal |
| |
∣ |
char-literal |
| |
∣ |
string-literal |
| |
∣ |
constr |
| |
∣ |
false |
| |
∣ |
true |
| |
∣ |
[] |
| |
∣ |
() |
| |
∣ |
`tag-name |
The syntactic class of constants comprises literals from the four
base types (integers, floating-point numbers, characters, character
strings), and constant constructors from both normal and polymorphic
variants, as well as the special constants false, true, [],
and (), which behave like constant constructors.