Created
September 16, 2012 01:27
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JRuby bug involving Enumerator and Enumerable#drop
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$ rvm 1.9.3 do irb | |
1.9.3p194 :001 > a = (1..200).to_a; nil | |
=> nil | |
1.9.3p194 :002 > a.each_slice(15).drop(5) | |
=> [[76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90], [91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105], [106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120], [121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135], [136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150], [151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165], [166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180], [181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195], [196, 197, 198, 199, 200]] | |
1.9.3p194 :003 > exit |
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$ jruby -S irb | |
irb(main):001:0> RUBY_DESCRIPTION | |
=> "jruby 1.7.0.preview2 (1.9.3p203) 2012-09-15 d2e1ea8 on Java HotSpot(TM) 64-Bit Server VM 1.7.0_07-b10 [darwin-x86_64]" | |
irb(main):002:0> a = (1..200).to_a; nil | |
=> nil | |
irb(main):003:0> a.each_slice(15).drop(5) | |
=> [[196, 197, 198, 199, 200], [196, 197, 198, 199, 200], [196, 197, 198, 199, 200], [196, 197, 198, 199, 200], [196, 197, 198, 199, 200], [196, 197, 198, 199, 200], [196, 197, 198, 199, 200], [196, 197, 198, 199, 200], [196, 197, 198, 199, 200]] | |
irb(main):004:0> a.to_enum.each_slice(15).drop(5) | |
=> [[76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90], [91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105], [106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120], [121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135], [136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150], [151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165], [166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180], [181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195], [196, 197, 198, 199, 200]] | |
irb(main):005:0> a.to_enum.each_slice(15) | |
=> #<Enumerator: #<Enumerator: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200]:each>:each_slice(15)> | |
irb(main):006:0> a.each_slice(15) | |
=> #<Enumerator: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200]:each_slice(15)> | |
irb(main):007:0> exit |
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This is a problem with JRuby 1.6.x, too.