Add non-const operator[] to TypedIOBuf

Test Plan: used it

Reviewed By: lucian@fb.com

FB internal diff: D1277063

@override-unit-failures

diff --git a/folly/io/TypedIOBuf.h b/folly/io/TypedIOBuf.h
index 26eccccca8e3ec2ebc97828ebb4118e97607be91..c5ecfc484837502d1c8ec6536e9882c15cc0800e 100644 (file)
--- a/folly/io/TypedIOBuf.h
+++ b/folly/io/TypedIOBuf.h
@@ -153,6 +153,11 @@ class TypedIOBuf {
     return data()[idx];
   }
 
+  T& operator[](ssize_t idx) {
+    assert(idx >= 0 && idx < length());
+    return writableData()[idx];
+  }
+
   /**
    * Append one element.
    */