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== Examples == | == Examples == | ||
Both arguments of Intersection is usually restricted to [[vector|vectors]]. Unlike sets in the mathematical sense, duplicate elements are allowed in both sides, and Union is usually implemented as "left argument unchanged, plus the elements of right argument not in the left argument" <source lang=apl inline>X,(~Y∊X)/Y</ | Both arguments of Intersection is usually restricted to [[vector|vectors]]. Unlike sets in the mathematical sense, duplicate elements are allowed in both sides, and Union is usually implemented as "left argument unchanged, plus the elements of right argument not in the left argument" <source lang=apl inline>X,(~Y∊X)/Y</syntaxhighlight>. This preserves the order and multiplicity in both arguments, the left one taking precedence. Both arguments can be [[nested array|nested arrays]]. | ||
<source lang=apl> | <source lang=apl> | ||
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│THIS│THAT│THE│OTHER│THAN│AND│ | │THIS│THAT│THE│OTHER│THAN│AND│ | ||
└────┴────┴───┴─────┴────┴───┘ | └────┴────┴───┴─────┴────┴───┘ | ||
</ | </syntaxhighlight> | ||
== Extension == | == Extension == | ||
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CC | CC | ||
DD | DD | ||
</ | </syntaxhighlight>{{Works in|[[Extended Dyalog APL]]}} | ||
Others can easily define such a function: | Others can easily define such a function: | ||
[https://tio.run/##SyzI0U2pTMzJT///P@JR2wQTBaNHvVvUHR2dnJyBQJ0rEihoDBN0cXF0VOcKzcvMzwMKVz/q3fWod9Wj3q2PevY/6l2h8ahzEVBI0wYsvhkoXsv1qG8qUGWEAliPQuT//wA Try it online!]<source lang=apl> | [https://tio.run/##SyzI0U2pTMzJT///P@JR2wQTBaNHvVvUHR2dnJyBQJ0rEihoDBN0cXF0VOcKzcvMzwMKVz/q3fWod9Wj3q2PevY/6l2h8ahzEVBI0wYsvhkoXsv1qG8qUGWEAliPQuT//wA Try it online!]<source lang=apl> | ||
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CC | CC | ||
DD | DD | ||
</ | </syntaxhighlight>{{Works in|[[Dyalog APL]]}} | ||
== External Links == | == External Links == | ||