Execute Brain****/D: Difference between revisions

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@@ Line 101: / Line 101: @@
 ===Version 2===
 Simpler and faster:
-<lang d>import core.stdc.stdio, core.stdc.stdlib;
+<lang d>import core.stdc.stdio, core.stdc.stdlib, std.conv;
 void brainfuckRun(in string code) nothrow {
     static int[int] matchBraces(in string code) pure nothrow
     out(result) {
-        foreach (k, v; result) {
+        foreach (immutable k, immutable v; result) {
             assert(k >=0 && k < code.length);
             assert(v >=0 && v < code.length);
@@ Line 115: / Line 115: @@
         int[] loopStack;
-        foreach (i, instruction; code) {
+        foreach (immutable i, immutable instruction; code) {
             if (instruction == '[')
                 loopStack ~= i;
@@ Line 135: / Line 135: @@
         int cell, index;
-        while (index < cast(int)code.length) {
+        while (index < code.length.signed) {
             immutable int instruction = code[index];
@@ Line 145: / Line 145: @@
                 case '.': putchar(tape[cell]); break;
                 case ',':
-                    immutable int c = getchar();
+                    immutable int c = getchar;
                     if (c == EOF)
                         exit(1);