Fixnum is deprecated in Ruby 2.4

lib/cassandra-cql/result.rb

@@ -107,7 +107,7 @@ module CassandraCQL
     def fetch_hash
       if block_given?
         while row = fetch_row
-          if row.kind_of?(Fixnum)
+          if row.kind_of?(Integer)
             yield({row => row})
           else
             yield row.to_hash
@@ -115,7 +115,7 @@ module CassandraCQL
         end
       else
         if row = fetch_row
-          if row.kind_of?(Fixnum)
+          if row.kind_of?(Integer)
             {row => row}
           else
             row.to_hash

lib/cassandra-cql/row.rb

@@ -22,7 +22,7 @@ module CassandraCQL
       @row, @schema = row, schema
       @value_cache = Hash.new { |h, key|
         # If it's a number and not one of our columns, assume it's an index
-        if key.kind_of?(Fixnum) and !column_indices.key?(key)
+        if key.kind_of?(Integer) and !column_indices.key?(key)
           column_name = column_names[key]
           column_index = key
         else

spec/statement_spec.rb

@@ -159,7 +159,7 @@ describe "cast_to_cql" do
     end
   end
 
-  context "with a Fixnum object" do
+  context "with a Integer object" do
     it "should return the same object" do
       Statement.cast_to_cql(15).should eq(15)
     end
@@ -209,7 +209,7 @@ describe "cast_to_cql" do
     end
   end
 
-  context "with an array of Fixnums" do
+  context "with an array of Integers" do
     it "should equal itself" do
       arr = [1, 2, 3]
       Statement.cast_to_cql(arr).should eq(arr)