Merge pull request #209 from vipulnsward/method-defined

Use method_defined? to check if method exists instead of slower check

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/json/add/time.rb b/lib/json/add/time.rb
index 338209d..d983467 100644
--- a/lib/json/add/time.rb
+++ b/lib/json/add/time.rb
@@ -10,7 +10,7 @@ class Time
     if usec = object.delete('u') # used to be tv_usec -> tv_nsec
       object['n'] = usec * 1000
     end
-    if instance_methods.include?(:tv_nsec)
+    if method_defined?(:tv_nsec)
       at(object['s'], Rational(object['n'], 1000))
     else
       at(object['s'], object['n'] / 1000)