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Description

The expression
   %L
is desugared to
   Percent(L)

Function Percent

@x:func Percent(L~xdom:element)~boolean
L first parameter.

Semantics

The percent function has special semantics for dealing with variable length parameter list. A function that takes a variable number of parameters has a single formal parameter whose name is preceded with a % prefix operator. When an actual parameter has the form %L, it is replaced by a sequence of positional and named parameters that come from the attributes of L.

Examples


   @x:func bar(%L) {
      @x:for v := L {
         v; ";"
      }
   }
   @x:func foo(%L) {
      bar(%L,"abc")
   }
   foo(1,2,3);
   // result is: 1;2;3;abc;