March 2014 update

Task/Use-another-language-to-call-a-function/D/use-another-language-to-call-a-function-1.d

@@ -0,0 +1,14 @@
+import core.stdc.string;
+
+extern(C) bool query(char *data, size_t *length) pure nothrow {
+    immutable text = "Here am I";
+
+    if (*length < text.length) {
+        *length = 0; // Also clears length.
+        return false;
+    } else {
+        memcpy(data, text.ptr, text.length);
+        *length = text.length;
+        return true;
+    }
+}

Task/Use-another-language-to-call-a-function/D/use-another-language-to-call-a-function-2.d

@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <stdbool.h>
+
+extern bool query(char *data, size_t *length);
+
+int main() {
+    char buffer[1024];
+    size_t size = sizeof(buffer);
+
+    if (query(buffer, &size))
+        printf("%.*s\n", size, buffer);
+    else
+        puts("The call to query has failed.");
+
+    return 0;
+}