Another update from ingydotnet^djgoku

Task/Array-concatenation/00DESCRIPTION

@@ -1 +1,2 @@
-Show how to concatenate two arrays in your language. If this is as simple as <code><var>array1</var> + <var>array2</var></code>, so be it.
+Show how to concatenate two arrays in your language.
+If this is as simple as <code><var>array1</var> + <var>array2</var></code>, so be it.

Task/Array-concatenation/00META.yaml

@@ -1,2 +1,4 @@
 ---
+category:
+- Simple
 note: Data Structures

Task/Array-concatenation/Elena/array-concatenation.elena

@@ -1,3 +1,4 @@
+#define system.
 #define extensions.
 
 #symbol program =
@@ -5,5 +6,5 @@
     #var a := (1,2,3).
     #var b := (4,5).
 
-    consoleEx writeLine:"(":a:") + (":b:") = (":(a + b):")".
+    console writeLine:"(":a:") + (":b:") = (":(a + b):")".
 ].

Task/Array-concatenation/Elixir/array-concatenation.elixir

@@ -0,0 +1,6 @@
+iex(1)> [1, 2, 3] ++ [4, 5, 6]
+[1, 2, 3, 4, 5, 6]
+iex(2)> Enum.concat([[1, [2], 3], [4], [5, 6]])
+[1, [2], 3, 4, 5, 6]
+iex(3)> Enum.concat([1..3, [4,5,6], 7..9])
+[1, 2, 3, 4, 5, 6, 7, 8, 9]

Task/Array-concatenation/JavaScript/array-concatenation.js

@@ -1,4 +1,3 @@
-var
- a = [1,2,3],
- b = [4,5,6],
- c = a.concat(b);  // [1,2,3,4,5,6]
+var a = [1,2,3],
+    b = [4,5,6],
+    c = a.concat(b); //=> [1,2,3,4,5,6]

Task/Array-concatenation/NetRexx/array-concatenation.netrexx

@@ -1,5 +1,5 @@
 /* NetRexx */
-options replace format comments java crossref savelog symbols nobinary
+options replace format comments java crossref nobinary
 
 cymru =  [ 'Ogof Ffynnon Ddu', 'Ogof Draenen' ]
 

Task/Array-concatenation/Perl-6/array-concatenation.pl6

@@ -1,8 +1,8 @@
-# the comma ',' can be used to concatenate arrays:
-sub concatenateArrays(@a, @b) {
-	@a, @b
+# the prefix:<|> operator (called "slip") can be used to interpolate arrays into a list:
+sub cat-arrays(@a, @b) {
+	|@a, |@b
 }
 
 my @a1 = (1,2,3);
 my @a2 = (2,3,4);
-concatenateArrays(@a1,@a2).join(", ").say;
+cat-arrays(@a1,@a2).join(", ").say;

Task/Array-concatenation/Ruby/array-concatenation-2.rb

@@ -0,0 +1,4 @@
+# concat multiple arrays:
+[arr1,arr2,arr3].flatten(1)
+# ignore nil:
+[arr1,arr2,arr3].compact.flatten(1)

Task/Array-concatenation/SETL/array-concatenation.setl

@@ -0,0 +1,3 @@
+A := [1, 2, 3];
+B := [3, 4, 5];
+print(A + B); -- [1 2 3 3 4 5]