Scalars:
blessed_ok( SCALAR ) # Ok if the SCALAR is a
# blessed reference.
readonly_ok( SCALAR ) # Ok is the SCALAR is read-only.
ref_type_ok( REF1, REF2 ) # Ok if REF1 is the same reference
# type as REF2.
weak_ok( SCALAR ) # Ok if the SCALAR is a weak
# reference.
strong_ok( SCALAR ) # Ok if the SCALAR is not a weak
# reference.
Arrays:
array_none_ok( ITEM, ARRAY [, NAME] ) # Ok is no
# element of ARRAY
# is ITEM.
array_once_ok( ITEM, ARRAY [, NAME] ) # Ok is only one
# element ARRAY
# is ITEM.
array_multiple_ok( ITEM, ARRAY [, NAME] ) # Ok if more than
# one element of
# ARRAY is ITEM.
array_minstr_ok( ITEM, ARRAY [, NAME] ) # Ok is all elements
# of ARRAY are
# asciibetically
# greater than or
# equal to MAX.
array_maxstr_ok( ITEM, ARRAY [, NAME] ) # Ok is all elements
# of ARRAY are
# asciibetically less
# than or equal to MAX.
