Data update

Task/Conditional-structures/Rust/conditional-structures-1.rs

@@ -0,0 +1,21 @@
+// This function will only be compiled if we are compiling on Linux
+#[cfg(target_os = "linux")]
+fn running_linux() {
+    println!("This is linux");
+}
+#[cfg(not(target_os = "linux"))]
+fn running_linux() {
+    println!("This is not linux");
+}
+
+// If we are on linux, we must be using glibc
+#[cfg_attr(target_os = "linux", target_env = "gnu")]
+// We must either be compiling for ARM or on a little endian machine that doesn't have 32-bit pointers pointers, on a
+// UNIX like OS and only if we are doing a test build
+#[cfg(all(
+        any(target_arch = "arm", target_endian = "little"),
+        not(target_pointer_width = "32"),
+        unix,
+        test
+        ))]
+fn highly_specific_function() {}