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\DOC mk_type
\TYPE {mk_type : string * hol_type list -> hol_type}
\SYNOPSIS
Constructs a type (other than a variable type).
\DESCRIBE
{mk_type("op",[`:ty1`;...;`:tyn`])} returns {`:(ty1,...,tyn)op`} where {op}
is the name of a known {n}-ary type constructor.
\FAILURE
Fails with {mk_type} if the string is not the name of a known type, or if the
type is known but the length of the list of argument types is not equal to
the arity of the type constructor.
\EXAMPLE
{
# mk_type ("bool",[]);;
val it : hol_type = `:bool`
# mk_type ("list",[`:bool`]);;
val it : hol_type = `:(bool)list`
# mk_type ("fun",[`:num`;`:bool`]);;
val it : hol_type = `:num->bool`
}
\SEEALSO
dest_type, mk_vartype.
\ENDDOC
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