ParameterList

Represents a function's formal parameters + variadics info. Length, indexing and iteration are based on a depth-first tuple expansion. https://dlang.org/spec/function.html#ParameterList

extern (C++)

struct ParameterList {

StorageClass stc;

VarArg varargs;

}

Members

length size_t length(): Returns the number of expanded parameters. Complexity: O(N).
opApply int opApply(Parameter.ForeachDg dg): Iterates over the expanded parameters. Complexity: O(N). Prefer this to avoid the O(N + N^2/2) complexity of calculating length and calling N times opIndex.
opApply int opApply(Parameter.SemanticForeachDg dg): Iterates over the expanded parameters, matching them with the unexpanded ones, for semantic processing
opEquals bool opEquals(ParameterList other): Compares this to another ParameterList (and expands tuples if necessary)
opIndex Parameter opIndex(size_t i): Returns the expanded parameter at the given index, or null if out of bounds. Complexity: O(i).

parameters Parameters* parameters;: The raw (unexpanded) formal parameters, possibly containing tuples.