The Distinct() is going to mess up the ordering, so you’ll have to the sorting after that. var uniqueColors = (from dbo in database.MainTable where dbo.Property == true select dbo.Color.Name).Distinct().OrderBy(name=>name);
Just use: $output = array_merge($array1, $array2); That should solve it. Because you use string keys if one key occurs more than one time (like ’44’ in your example) one key will overwrite preceding ones with the same name. Because in your case they both have the same value anyway it doesn’t matter and it will … Read more
Using SQL Server 2008, you can create a filtered index. CREATE UNIQUE INDEX AK_MyTable_Column1 ON MyTable (Column1) WHERE Column1 IS NOT NULL Another option is a trigger to check uniqueness, but this could affect performance.
Edited ES6 solution: […new Set(a)]; Alternative: Array.from(new Set(a)); Old response. O(n^2) (do not use it with large arrays!) var arrayUnique = function(a) { return a.reduce(function(p, c) { if (p.indexOf(c) < 0) p.push(c); return p; }, []); };
You can use the Distinct method to return an IEnumerable<T> of distinct items: var uniqueItems = yourList.Distinct(); And if you need the sequence of unique items returned as a List<T>, you can add a call to ToList: var uniqueItemsList = yourList.Distinct().ToList();
I didn’t think your question was very clear, but if all you need is a unique file name… import uuid unique_filename = str(uuid.uuid4())
Have you tried to specify the :uniq option on the has_many association: has_many :products, :through => :orders, :uniq => true From the Rails documentation: :uniq If true, duplicates will be omitted from the collection. Useful in conjunction with :through. UPDATE FOR RAILS 4: In Rails 4, has_many :products, :through => :orders, :uniq => true is … Read more
uniq has the option you need: -u, –unique only print unique lines $ cat file.txt 1 1 2 3 5 5 7 7 $ uniq -u file.txt 2 3
A bit hacky, but this should do it: echo “${ids[@]}” | tr ‘ ‘ ‘\n’ | sort -u | tr ‘\n’ ‘ ‘ To save the sorted unique results back into an array, do Array assignment: sorted_unique_ids=($(echo “${ids[@]}” | tr ‘ ‘ ‘\n’ | sort -u | tr ‘\n’ ‘ ‘)) If your shell supports … Read more
1. There is a UUID pub package: http://pub.dartlang.org/packages/uuid example usage: import ‘package:uuid/uuid.dart’; // Create uuid object var uuid = Uuid(); // Generate a v1 (time-based) id uuid.v1(); // -> ‘6c84fb90-12c4-11e1-840d-7b25c5ee775a’ // Generate a v4 (random) id uuid.v4(); // -> ‘110ec58a-a0f2-4ac4-8393-c866d813b8d1’ // Generate a v5 (namespace-name-sha1-based) id uuid.v5(uuid.NAMESPACE_URL, ‘www.google.com’); // -> ‘c74a196f-f19d-5ea9-bffd-a2742432fc9c’ 2. This src has … Read more