From 773f13eab521db5dadd993c00dc4c780970d5d2e Mon Sep 17 00:00:00 2001
From: Patrick Simianer <p@simianer.de>
Date: Tue, 17 Jun 2014 15:24:07 +0200
Subject: bump to 1.0.2, to/from_json methods for SparseVector

---
 lib/zipf/SparseVector.rb | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'lib')

diff --git a/lib/zipf/SparseVector.rb b/lib/zipf/SparseVector.rb
index 3096412..33bb396 100644
--- a/lib/zipf/SparseVector.rb
+++ b/lib/zipf/SparseVector.rb
@@ -1,3 +1,6 @@
+require 'json'
+
+
 class SparseVector < Hash
 
   def initialize arg=nil
@@ -18,6 +21,12 @@ class SparseVector < Hash
     return v
   end
 
+  def to_h
+    h = {}
+    self.each_pair { |k,v| h[k] = v }
+    return h
+  end
+
   def from_h h
     h.each_pair { |k,v| self[k] = v }
   end
@@ -53,6 +62,20 @@ class SparseVector < Hash
     }
   end
 
+  def to_json
+    JSON.dump self.to_h
+  end
+
+  def from_json s
+    from_h JSON.load(s)
+  end
+
+  def self.from_json s
+    v = SparseVector.new
+    v.from_json s
+    return v
+  end
+
   def self.from_kv s
     v = SparseVector.new
     v.from_kv s
-- 
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