12 lines
358 B
Text
12 lines
358 B
Text
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A=: 2 3 5 7 11 NB. legal
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B=: 999 NB. legal
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B 0} A NB. functional array update (does not change A)
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NB. the use of a single brace to denote indexing might also confuse people
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999 3 5 7 11
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0} A NB. legal
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2
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999 0} A NB. not legal
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|rank error
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(999)0} A NB. what was intended
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999 3 5 7 11
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