Arrays: Difference between revisions
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klXno</lang> |
klXno</lang> |
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Because arrays are so important in J, a large portion of the language applies to this topic. |
Because arrays are so important in J, a large portion of the language applies to this topic. |
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Note also that J's arrays are (with some obscure exceptions) "constants". We can append to an existing array, creating a new array, but if we kept a reference to the original it would have remained unchanged. |
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<lang J> A=: 7 11 |
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B=: A, 9 5 |
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B |
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7 11 9 5 |
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A |
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7 11</lang> |
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Thus, in recent versions of J, special syntax was introduced to refer to a value while discarding the reference: <lang J> A=: 2 4 6 8 |
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B=: A_:, 1 3 9 5 |
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B |
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2 4 6 8 1 3 9 5 |
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A |
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|value error: A</lang> |
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=={{header|Java}}== |
=={{header|Java}}== |
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