String matching: Difference between revisions
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=={{header|Picat}}==
The two most common predicate to use for string matching is <code>find/4</code> (find a substring) or <code>append/3</code> (a general purpose reversible predicate for concatenating/splitting lists/strings). Both predicates are non-deterministic and can yield multiple solutions, e.g. together with <code>findall/2</code>.
<lang Picat>import util.
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positions = [[9,16],[21,28]]
positions = [[5,5],[8,8],[10,10],[17,17],[20,20],[22,22]]</pre>
=={{header|PicoLisp}}==
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