Name Rascal/Libraries/Prelude/List/toRel

Synopsis Convert a list to a relation.

Function rel[&T,&T] toRel(list[&T] lst)

Usage import List;

Description Convert a list to relation, where each tuple encodes which elements are followed by each other. This function will return an empty relation for empty lists and for singleton lists.

Examples

rascal>import List;
ok
rascal>toRel([3, 1, 4, 5]);
rel[int,int]: {
  <4,5>,
  <1,4>,
  <3,1>
}
rascal>toRel(["zebra", "elephant", "snake", "owl"]);
rel[str,str]: {
  <"snake","owl">,
  <"zebra","elephant">,
  <"elephant","snake">
}

Questions

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