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require 'narray'
a = NArray.float(8).indgen!
print "a = "
p a
t,f = ( (a>=5).or(a<2) ).where2
print "t,f = ( (a>=5).or (a<2) ).where2\n"
print "t = "; p t
print "f = "; p f
t,f = ( (a>=5).and(a<2) ).where2
print "t,f = ( (a>=5).and (a<2) ).where2\n"
print "t = "; p t
print "f = "; p f
print "\n vvv no-meaning !! vvv\n"
t,f = ( (a>=5) && (a<2) ).where2
print "t,f = ( (a>=5) && (a<2) ).where2\n"
print "t = "; p t
print "f = "; p f
t,f = ( (a>=5) || (a<2) ).where2
print "t,f = ( (a>=5) || (a<2) ).where2\n"
print "t = "; p t
print "f = "; p f
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