File: bndvar.doc

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\DOC bndvar

\TYPE {bndvar : term -> term}

\SYNOPSIS
Returns the bound variable of an abstraction.

\DESCRIBE
{bndvar `\var. t`} returns {`var`}.

\FAILURE
Fails unless the term is an abstraction.

\EXAMPLE
{
  # bndvar `\x. x + 1`;;
  val it : term = `x`
}

\SEEALSO
body, dest_abs.

\ENDDOC