Matrix transposition: Difference between revisions

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@@ Line 646: / Line 646: @@
 =={{header|D}}==
+===Locally Procedural Style===
-<lang d>import std.stdio, std.algorithm, std.array, std.conv;
+<lang d>import std.stdio;
-auto transpose(T)(immutable /*in*/ T[][] m) pure nothrow {
+T[][] transpose(T)(immutable /*in*/ T[][] m) pure nothrow {
-    auto r = new T[][](m[0].length, m.length);
+    auto r = new typeof(return)(m[0].length, m.length);
     foreach (nr, row; m)
         foreach (nc, c; row)
@@ Line 661: / Line 662: @@
                    [18, 19, 20, 21]];
     immutable T = transpose(M);
-    writeln("[", join(map!text(T), "\n "), "]");
+    writefln("%(%(%2d %)\n%)", T);
 }</lang>
+{{out}}
-Output:
-<pre>[[10, 14, 18]
+<pre>10 14 18
- [11, 15, 19]
+15 19
- [12, 16, 20]
+16 20
- [13, 17, 21]]</pre>
+17 21</pre>
-Functional style (same output):
+===Functional Style===
+Same output.
-<lang d>import std.stdio, std.algorithm, std.conv, std.range;
+<lang d>import std.stdio, std.algorithm, std.range;
 auto transpose(T)(in T[][] m) /*pure nothrow*/ {
-    return map!(i => transversal(m, i))(iota(m[0].length));
+    return iota(m[0].length).map!(i => transversal(m, i))();
 }
@@ Line 680: / Line 682: @@
               [18, 19, 20, 21]];
     /*immutable*/ auto T = transpose(M);
-    writeln("[", join(map!text(T), "\n "), "]");
+    writefln("%(%(%2d %)\n%)", T);
 }</lang>