The in T type optimises type T for passing as an input parameter.
The out T type optimises type T for passing as an output parameter.
The inout T type (or io T optimises type T for passing as an input/output parameter.
This relies on binding binding rules, and selecting passing by copy or by reference depending on what is more efficient.
The
in Ttype optimises typeTfor passing as an input parameter. Theout Ttype optimises typeTfor passing as an output parameter. Theinout Ttype (orio Toptimises typeTfor passing as an input/output parameter.This relies on binding binding rules, and selecting passing by copy or by reference depending on what is more efficient.