How to define (and name) the corresponding safe term comparison predicates in ISO Prolog?

iso_dif/2 is much simpler to implement than a comparison: The built-in \= operator is available You now exactly what arguments to provide to\= Definition Based on your comments, the safe comparison means that the order won’t change if variables in both subterms are instanciated. If we name the comparison lt, we have for example: lt(a(X), … Read more

how to sort a scala.collection.Map[java.lang.String, Int] by its values?

Depending on what the expected output collection type is (SortedMaps are sorted on the keys), you could use something like this: Map(“foo”->3, “raise”->1, “the”->2, “bar”->4).toList sortBy {_._2} Result would be the list of key/value pairs sorted by the value: List[(java.lang.String, Int)] = List((raise,1), (the,2), (foo,3), (bar,4)) There is a Map type that retains the original … Read more

Sort a Table[] in Lua

A table in Lua is a set of key-value mappings with unique keys. The pairs are stored in arbitrary order and therefore the table is not sorted in any way. What you can do is iterate over the table in some order. The basic pairs gives you no guarantee of the order in which the … Read more

how to sort an entity’s arrayCollection in symfony2

You should be able to use the @ORM\OrderBy statement which allows you to specify columns to order collections on: /** * @ORM\OneToMany(targetEntity=”BizTV\ContentManagementBundle\Entity\Content”, mappedBy=”container”) * @ORM\OrderBy({“sort_order” = “ASC”}) */ private $content; In fact this may be a duplicate of How to OrderBy on OneToMany/ManyToOne Edit Checking for implementation advice it appears that you must fetch the … Read more