diff --git a/base.rs b/base.rs
index aec5450..e82c928 100644
--- a/base.rs
+++ b/base.rs
@@ -129,7 +129,8 @@ extern {
     //fn CFEqual
     //fn CFGetAllocator
     fn CFGetRetainCount(cf: CFTypeRef) -> CFIndex;
-    //fn CFHash
+    fn CFGetTypeID(cf: CFTypeRef) -> CFTypeID;
+    fn CFHash(cf: CFTypeRef) -> CFHashCode;
     //fn CFMakeCollectable
     fn CFRelease(cf: CFTypeRef);
     fn CFRetain(cf: CFTypeRef) -> CFTypeRef;
diff --git a/string.rs b/string.rs
index 8059a0a..4f0b6c1 100644
--- a/string.rs
+++ b/string.rs
@@ -7,6 +7,7 @@ use base::{
     CFOptionFlags,
     CFRelease,
     CFTypeRef,
+    CFTypeID,
 
     kCFAllocatorDefault,
     kCFAllocatorNull,
@@ -331,7 +332,7 @@ extern {
 
     /* Getting String Properties */
     //fn CFShowStr
-    //fn CFStringGetTypeID
+    fn CFStringGetTypeID() -> CFTypeID;
 
     /* String File System Representations */
     //fn CFStringCreateWithFileSystemRepresentation