From d1bd70a7030d7915659d61affb0beadb907c23f0 Mon Sep 17 00:00:00 2001
From: Michal Kravcenko <michal.kravcenko@vsb.cz>
Date: Thu, 6 Sep 2018 09:38:53 +0200
Subject: [PATCH] FIX: fixed issue #2

---
 src/Solvers/DESolver.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Solvers/DESolver.cpp b/src/Solvers/DESolver.cpp
index 59e95d9c..83dc750b 100644
--- a/src/Solvers/DESolver.cpp
+++ b/src/Solvers/DESolver.cpp
@@ -16,7 +16,7 @@ MultiIndex::MultiIndex(size_t dimension) {
 }
 
 void MultiIndex::set_partial_derivative(size_t index, size_t value) {
-    this->partial_derivatives_degrees[ index ] = value;
+    this->partial_derivatives_degrees.at( index ) = value;
 }
 
 std::vector<size_t>* MultiIndex::get_partial_derivatives_degrees() {
-- 
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