From 71b39bcf60182d1686966db34225a670d13e3594 Mon Sep 17 00:00:00 2001
From: graehl <graehl@ec762483-ff6d-05da-a07a-a48fb63a330f>
Date: Thu, 8 Jul 2010 19:12:59 +0000
Subject: misc

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@185 ec762483-ff6d-05da-a07a-a48fb63a330f
---
 decoder/sparse_vector.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'decoder/sparse_vector.h')

diff --git a/decoder/sparse_vector.h b/decoder/sparse_vector.h
index 26f5d791..7794fd5e 100644
--- a/decoder/sparse_vector.h
+++ b/decoder/sparse_vector.h
@@ -18,6 +18,11 @@ public:
   typedef std::map<int, T> MapType;
   typedef typename std::map<int, T>::const_iterator const_iterator;
   SparseVector() {}
+  explicit SparseVector(std::vector<T> const& v) {
+    MapType::iterator p=values_.end();
+    for (unsigned i=0;i<v.size();++i)
+      p=values_.insert(p,MapType::value_type(i,v[i])); //faster
+  }
 
   const T operator[](int index) const {
     typename MapType::const_iterator found = values_.find(index);
-- 
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