literal
notation for representing a fixed value in source code
anonymous function
function definition that is not bound to an identifier
character literal
notation for representing a character in source code
string literal
notation for representing a string in source code
numeric literal
notation for representing a number in source code
Boolean literal
in programming languages, notation for the Boolean values of true or false
enumerated type element
named value that an enumerated type can take
here document
a section of a source code file that is treated as if it were a separate file