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How to create patterns for DeleteCases / Cases / Select: deleting elements of a list, from the condition of a negative element in a column
In such a simple case, @MarcoB's and @BobHanlon's answers are the way to go. In other words, use a pure function that tests a part of the desired element of each sublist, as in
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How to create patterns for DeleteCases / Cases / Select: deleting elements of a list, from the condition of a negative element in a column
You were right that such a pattern would involve _ (i.e. Blank) and a PatternTest (...
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