Add magic comment about frozen strings

openzipkin · Oct 8, 2019 · f8d6a89 · f8d6a89
1 parent 8fa5590
commit f8d6a89
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/zipkin-tracer/zipkin_b3_single_header_format.rb b/lib/zipkin-tracer/zipkin_b3_single_header_format.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ZipkinTracer
   # This format corresponds to the propagation key "b3" (or "B3").
   # b3: {x-b3-traceid}-{x-b3-spanid}-{if x-b3-flags 'd' else x-b3-sampled}-{x-b3-parentspanid}