string_length_kind¶

How the length of a string is determined.

Declaration¶

string_length_kind
    = AssumedLength
    | DeferredLength
    | ExpressionLength
    | ImplicitLength

Value	Meaning
`AssumedLength`	`character(len=*)`: a dummy argument takes the length of the actual argument.
`DeferredLength`	`character(len=:)`: the length is fixed when the object is allocated or assigned.
`ExpressionLength`	the length is the expression in the `len` member, which may be a constant or computed at run time.
`ImplicitLength`	the length follows from the operation that produced the value rather than from a declaration. It is what the result of a StringPhysicalCast must use.

None. An enumeration value is not evaluated.

len and len_kind go together: ExpressionLength requires a len, and the other three leave it nil.