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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | \DOC null
\TYPE {null : (* list -> bool)}
\SYNOPSIS
Tests for empty list.
\DESCRIBE
Returns {true} for an empty list. Otherwise it returns {false}.
\FAILURE
Never fails.
\EXAMPLE
{
#null [];;
true : bool
#null [1;2;3];;
false : bool
}
\ENDDOC
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