Today I needed to get all the elements in one list that were not members of a second list. That may ring a bell — it’s known as a set difference, or a relative complement.<\/p>\n
Although it would have been simple to loop through first the list and add only the elements not present in the second list to a new list, I thought I would look around to see if anyone had already implemented set operations in ColdFusion, e.g. on cflib.org<\/a>. I was surprised that I didn’t find anything, so I decided to create my own, as much as an exercise as anything, and posted it to Bitbucket: I included the following operations:<\/p>\n In the process, I experimented with MXUnit<\/a>, a unit testing suite for ColdFusion that integrates with Eclipse. (I am currently taking a Scala programming course that emphasizes Test-Driven Development, or TDD, so I thought I should try it in CF as well.)<\/p>\n Since I was implementing sets using arrays as the underlying data structure, I also decided to use cfinterface to define a set interface, which arraySet implements. I had never used cfinterface before, and although its usefulness has been questioned<\/a>, it seemed more appropriate than extending a base set class.<\/p>\n","protected":false},"excerpt":{"rendered":" Today I needed to get all the elements in one list that were not members of a second list. That may ring a bell — it’s known as a set difference, or a relative complement. Although it would have been simple to loop through first the list and add only the elements not present in … Continue reading Set operations in ColdFusion<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[324,349,321,306,320,323,318,317,240,319,322],"class_list":["post-1005","post","type-post","status-publish","format-standard","hentry","category-coldfusion","tag-cfinterface","tag-coldfusion","tag-complement","tag-eclipse","tag-intersection","tag-mxunit","tag-set-operations","tag-sets","tag-tdd","tag-union","tag-unit-testing"],"_links":{"self":[{"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/posts\/1005","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/comments?post=1005"}],"version-history":[{"count":3,"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/posts\/1005\/revisions"}],"predecessor-version":[{"id":1009,"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/posts\/1005\/revisions\/1009"}],"wp:attachment":[{"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/media?parent=1005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/categories?post=1005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/osric.com\/chris\/accidental-developer\/wp-json\/wp\/v2\/tags?post=1005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\narraySet: ColdFusion set operations<\/a><\/p>\n\n