Add const modifier for constants methods

src/CeresSearch.cpp

@@ -15,12 +15,12 @@
 
 #include <aoc/CeresSearch.hpp>
 
-std::string CeresSearch::getPuzzleName() const
+const std::string CeresSearch::getPuzzleName() const
 {
     return "Day 4: Ceres Search";
 }
 
-std::string CeresSearch::getInputFileName() const
+const std::string CeresSearch::getInputFileName() const
 {
     return "ceres_search.txt";
 }

src/GuardGallivant.cpp

@@ -15,12 +15,12 @@
 
 #include <aoc/GuardGallivant.hpp>
 
-std::string GuardGallivant::getPuzzleName() const
+const std::string GuardGallivant::getPuzzleName() const
 {
     return "Day 6: Guard Gallivant";
 }
 
-std::string GuardGallivant::getInputFileName() const
+const std::string GuardGallivant::getInputFileName() const
 {
     return "guard_gallivant.txt";
 }
@@ -75,17 +75,17 @@ size_t GuardGallivant::getStartDirectionIndex() const
     return 2;
 }
 
-char GuardGallivant::getStartChar() const
+const char GuardGallivant::getStartChar() const
 {
     return '^';
 }
 
-char GuardGallivant::getVisitedChar() const
+const char GuardGallivant::getVisitedChar() const
 {
     return 'X';
 }
 
-char GuardGallivant::getObstructionChar() const
+const char GuardGallivant::getObstructionChar() const
 {
     return '#';
 }

src/HistorianHysteria.cpp

@@ -17,12 +17,12 @@
 
 #include <aoc/HistorianHysteria.hpp>
 
-std::string HistorianHysteria::getPuzzleName() const
+const std::string HistorianHysteria::getPuzzleName() const
 {
     return "Day 1: Historian Hysteria";
 }
 
-std::string HistorianHysteria::getInputFileName() const
+const std::string HistorianHysteria::getInputFileName() const
 {
     return "historian_hysteria.txt";
 }

src/HoofIt.cpp

@@ -21,12 +21,12 @@
 
 #include <aoc/Point2.hpp>
 
-std::string HoofIt::getPuzzleName() const
+const std::string HoofIt::getPuzzleName() const
 {
     return "Day 10: Hoof It";
 }
 
-std::string HoofIt::getInputFileName() const
+const std::string HoofIt::getInputFileName() const
 {
     return "hoof_it.txt";
 }
@@ -89,12 +89,12 @@ void HoofIt::finish()
     }
 }
 
-char HoofIt::getTrailheadChar() const
+const char HoofIt::getTrailheadChar() const
 {
     return '0';
 }
 
-char HoofIt::getTrailTopChar() const
+const char HoofIt::getTrailTopChar() const
 {
     return '9';
 }

src/LanParty.cpp

@@ -15,12 +15,12 @@
 
 #include <aoc/LanParty.hpp>
 
-std::string LanParty::getPuzzleName() const
+const std::string LanParty::getPuzzleName() const
 {
     return "Day 23: LAN Party";
 }
 
-std::string LanParty::getInputFileName() const
+const std::string LanParty::getInputFileName() const
 {
     return "lan_party.txt";
 }

src/MullItOver.cpp

@@ -22,12 +22,12 @@ MullItOver::MullItOver()
     data_
 } {}
 
-std::string MullItOver::getPuzzleName() const
+const std::string MullItOver::getPuzzleName() const
 {
     return "Day 3: Mull It Over";
 }
 
-std::string MullItOver::getInputFileName() const
+const std::string MullItOver::getInputFileName() const
 {
     return "mull_it_over.txt";
 }

src/PrintQueue.cpp

@@ -36,12 +36,12 @@ PrintQueue::PrintQueue()
     }
 }
 
-std::string PrintQueue::getPuzzleName() const
+const std::string PrintQueue::getPuzzleName() const
 {
     return "Day 5: Print Queue";
 }
 
-std::string PrintQueue::getInputFileName() const
+const std::string PrintQueue::getInputFileName() const
 {
     return "print_queue.txt";
 }

src/RedNosedReports.cpp

@@ -19,12 +19,12 @@
 #include <sstream>
 #include <vector>
 
-std::string RedNosedReports::getPuzzleName() const
+const std::string RedNosedReports::getPuzzleName() const
 {
     return "Day 2: Red-Nosed Reports";
 }
 
-std::string RedNosedReports::getInputFileName() const
+const std::string RedNosedReports::getInputFileName() const
 {
     return "red-nosed_reports.txt";
 }