June 2018 Update

Task/Loop-over-multiple-arrays-simultaneously/00DESCRIPTION

@@ -17,4 +17,20 @@ to produce the output:
 
 <br>
 If possible, also describe what happens when the arrays are of different lengths.
+
+
+;Related tasks:
+* &nbsp; [[Loop over multiple arrays simultaneously]]
+* &nbsp; [[Loops/Break]]
+* &nbsp; [[Loops/Continue]]
+* &nbsp; [[Loops/Do-while]]
+* &nbsp; [[Loops/Downward for]]
+* &nbsp; [[Loops/For]]
+* &nbsp; [[Loops/For with a specified step]]
+* &nbsp; [[Loops/Foreach]]
+* &nbsp; [[Loops/Increment loop index within loop body]]
+* &nbsp; [[Loops/Infinite]]
+* &nbsp; [[Loops/N plus one half]]
+* &nbsp; [[Loops/Nested]]
+* &nbsp; [[Loops/While]]
 <br><br>

Task/Loop-over-multiple-arrays-simultaneously/AppleScript/loop-over-multiple-arrays-simultaneously-2.applescript

@@ -0,0 +1,75 @@
+-- CONCAT MAPPED OVER A TRANSPOSITION ----------------------------------------
+on run
+
+    unlines(map(concat, transpose([["a", "b", "c"], ["A", "B", "C"], [1, 2, 3]])))
+
+end run
+
+-- GENERIC FUNCTIONS ---------------------------------------------------------
+
+-- concat :: [[a]] -> [a] | [String] -> String
+on concat(xs)
+    if length of xs > 0 and class of (item 1 of xs) is string then
+        set acc to ""
+    else
+        set acc to {}
+    end if
+    repeat with i from 1 to length of xs
+        set acc to acc & item i of xs
+    end repeat
+    acc
+end concat
+
+-- intercalate :: String -> [String] -> String
+on intercalate(s, xs)
+    set {dlm, my text item delimiters} to {my text item delimiters, s}
+    set str to xs as text
+    set my text item delimiters to dlm
+    return str
+end intercalate
+
+-- map :: (a -> b) -> [a] -> [b]
+on map(f, xs)
+    tell mReturn(f)
+        set lng to length of xs
+        set lst to {}
+        repeat with i from 1 to lng
+            set end of lst to |λ|(item i of xs, i, xs)
+        end repeat
+        return lst
+    end tell
+end map
+
+-- Lift 2nd class handler function into 1st class script wrapper
+-- mReturn :: Handler -> Script
+on mReturn(f)
+    if class of f is script then
+        f
+    else
+        script
+            property |λ| : f
+        end script
+    end if
+end mReturn
+
+-- transpose :: [[a]] -> [[a]]
+on transpose(xss)
+    script column
+        on |λ|(_, iCol)
+            script row
+                on |λ|(xs)
+                    item iCol of xs
+                end |λ|
+            end script
+
+            map(row, xss)
+        end |λ|
+    end script
+
+    map(column, item 1 of xss)
+end transpose
+
+-- unlines :: [String] -> String
+on unlines(xs)
+    intercalate(linefeed, xs)
+end unlines

Task/Loop-over-multiple-arrays-simultaneously/JavaScript/loop-over-multiple-arrays-simultaneously-5.js

@@ -11,23 +11,15 @@
             });
     }
 
-
-
-
-    // Sample function over a list
-
     // concat :: [a] -> s
     function concat(lst) {
         return ''.concat.apply('', lst);
     }
 
-
-    //    TEST
-
+    // TEST
     return zipListsWith(
         concat,
         [["a", "b", "c"], ["A", "B", "C"], [1, 2, 3]]
     )
     .join('\n');
-
 })();

Task/Loop-over-multiple-arrays-simultaneously/JavaScript/loop-over-multiple-arrays-simultaneously-7.js

@@ -0,0 +1,33 @@
+(() => {
+    'use strict';
+
+    // GENERIC FUNCTIONS -----------------------------------------------------
+
+    // concat :: [[a]] -> [a]
+    const concat = xs =>
+        xs.length > 0 ? (() => {
+            const unit = typeof xs[0] === 'string' ? '' : [];
+            return unit.concat.apply(unit, xs);
+        })() : [];
+
+    // map :: (a -> b) -> [a] -> [b]
+    const map = (f, xs) => xs.map(f);
+
+    // transpose :: [[a]] -> [[a]]
+    const transpose = xs =>
+        xs[0].map((_, col) => xs.map(row => row[col]));
+
+    // unlines :: [String] -> String
+    const unlines = xs => xs.join('\n');
+
+    // TEST ------------------------------------------------------------------
+    const xs = [
+        ['a', 'b', 'c'],
+        ['A', 'B', 'C'],
+        [1, 2, 3]
+    ];
+
+    return unlines(
+        map(concat, transpose(xs))
+    );
+})();

Task/Loop-over-multiple-arrays-simultaneously/Julia/loop-over-multiple-arrays-simultaneously-1.julia

@@ -1,5 +1 @@
-julia> map(println,
-('a','b','c'),('A','B','C'),(1,2,3)) ;
-aA1
-bB2
-cC3
+foreach(println, ('a', 'b', 'c'), ('A', 'B', 'C'), (1, 2, 3))

Task/Loop-over-multiple-arrays-simultaneously/Julia/loop-over-multiple-arrays-simultaneously-2.julia

@@ -1,7 +1,3 @@
-julia> for (i,j,k) in
-zip(('a','b','c'),('A','B','C'),(1,2,3))
-         println(i,j,k)
-       end
-aA1
-bB2
-cC3
+for (i, j, k) in zip(('a', 'b', 'c'), ('A', 'B', 'C'), (1, 2, 3))
+    println(i, j, k)
+end

Task/Loop-over-multiple-arrays-simultaneously/Red/loop-over-multiple-arrays-simultaneously.red

@@ -0,0 +1,7 @@
+>>blk: [["a" "b" "c"] ["A" "B" "C"] [1 2 3]]
+== [["a" "b" "c"] ["A" "B" "C"] [1 2 3]]
+
+>> repeat counter 3 [print [blk/1/:counter blk/2/:counter blk/3/:counter]]
+a A 1
+b B 2
+c C 3

Task/Loop-over-multiple-arrays-simultaneously/Sidef/loop-over-multiple-arrays-simultaneously.sidef

@@ -1,3 +1,3 @@
-MultiArray.new(%w(a b c),%w(A B C),%w(1 2 3)).each { |i,j,k|
-    say (i, j, k);
+[%w(a b c),%w(A B C),%w(1 2 3)].zip { |i,j,k|
+    say (i, j, k)
 }