diff --git a/Hazelnupp.vpp b/Hazelnupp.vpp
index f946694..895f174 100644
Binary files a/Hazelnupp.vpp and b/Hazelnupp.vpp differ
diff --git a/Hazelnupp/ParamConstraint.h b/Hazelnupp/ParamConstraint.h
index deeacf9..dc1bd5b 100644
--- a/Hazelnupp/ParamConstraint.h
+++ b/Hazelnupp/ParamConstraint.h
@@ -9,6 +9,28 @@ public:
 	//! Empty constructor
 	ParamConstraint() = default;
 
+	//! Constructs a require constraint
+	static ParamConstraint Require(const std::string& key, const std::vector<std::string>& defaultValue = {}, bool required = true)
+	{
+		ParamConstraint pc;
+		pc.key = key;
+		pc.defaultValue = defaultValue;
+		pc.required = required;
+
+		return pc;
+	}
+
+	//! Constructs a type-safety constraint
+	static ParamConstraint TypeSafety(const std::string& key, DATA_TYPE wantedType, bool constrainType = true)
+	{
+		ParamConstraint pc;
+		pc.key = key;
+		pc.constrainType = constrainType;
+		pc.wantedType = wantedType;
+
+		return pc;
+	}
+
 	//! Whole constructor
 	ParamConstraint(const std::string& key, bool constrainType, DATA_TYPE wantedType, const std::vector<std::string>& defaultValue, bool required)
 		:
@@ -21,26 +43,6 @@ public:
 		return;
 	}
 
-	//! Type-Constraint constructor
-	ParamConstraint(const std::string& key, bool constrainType, DATA_TYPE wantedType)
-		:
-		key{ key },
-		constrainType{ constrainType },
-		wantedType{ wantedType }
-	{
-		return;
-	}
-
-	//! Require-Constraint constructor
-	ParamConstraint(const std::string& key, const std::vector<std::string>& defaultValue, bool required = false)
-		:
-		key{ key },
-		defaultValue{ defaultValue },
-		required{ required }
-	{
-		return;
-	}
-
 	//! The key of the parameter to constrain
 	std::string key;
 	
diff --git a/Hazelnupp/main.cpp b/Hazelnupp/main.cpp
index 0b2535f..6a4eb80 100644
--- a/Hazelnupp/main.cpp
+++ b/Hazelnupp/main.cpp
@@ -48,7 +48,7 @@ int main(int argc, char** argv)
 		// Use
 		if (args.HasParam("--alfredo"))
 		{
-			std::cout << args["--alfredo"] << std::endl;
+			std::cout << args["--alfredo"].GetInt32() << std::endl;
 		}
 		else
 		{
diff --git a/Test_Hazelnupp/Constraints.cpp b/Test_Hazelnupp/Constraints.cpp
index 6711703..5334266 100644
--- a/Test_Hazelnupp/Constraints.cpp
+++ b/Test_Hazelnupp/Constraints.cpp
@@ -1 +1,248 @@
-#include "Constraints.h"
+#include "CppUnitTest.h"
+#include "helper.h"
+#include "../Hazelnupp/Hazelnupp.h"
+#include "../Hazelnupp/HazelnuppException.h"
+
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+namespace TestHazelnupp
+{
+	TEST_CLASS(_Constraints)
+	{
+	public:
+
+		// Tests that default values get added
+		TEST_METHOD(DefaultValues_GetAdded)
+		{
+			// Setup
+			ArgList args({
+				"/my/fake/path/wahoo.out",
+				"--dummy",
+				"123"
+				});
+
+			// Exercise
+			Hazelnupp nupp;
+			nupp.SetCrashOnFail(false);
+
+			nupp.RegisterConstraints({
+				ParamConstraint::Require("--elenor-int", {"5994"}),
+				ParamConstraint::Require("--federich-float", {"420.69"}),
+				ParamConstraint::Require("--siegbert-string", {"banana"}),
+				ParamConstraint::Require("--lieber-liste", {"banana", "apple", "59"})
+				});
+
+			nupp.Parse(C_Ify(args));
+
+			// Verify
+			Assert::IsTrue(nupp.HasParam("--elenor-int"));
+			Assert::IsTrue(nupp["--elenor-int"].GetDataType() == DATA_TYPE::INT);
+			Assert::AreEqual(nupp["--elenor-int"].GetInt32(), 5994);
+
+			Assert::IsTrue(nupp.HasParam("--federich-float"));
+			Assert::IsTrue(nupp["--federich-float"].GetDataType() == DATA_TYPE::FLOAT);
+			Assert::AreEqual(nupp["--federich-float"].GetFloat32(), 420.69);
+
+			Assert::IsTrue(nupp.HasParam("--siegbert-string"));
+			Assert::IsTrue(nupp["--siegbert-string"].GetDataType() == DATA_TYPE::STRING);
+			Assert::AreEqual(nupp["--siegbert-string"].GetString(), std::string("banana"));
+
+			Assert::IsTrue(nupp.HasParam("--lieber-liste"));
+			Assert::IsTrue(nupp["--lieber-liste"].GetDataType() == DATA_TYPE::LIST);
+			Assert::AreEqual(nupp["--lieber-liste"].GetList()[0]->GetString(), std::string("banana"));
+			Assert::AreEqual(nupp["--lieber-liste"].GetList()[1]->GetString(), std::string("apple"));
+			Assert::AreEqual(nupp["--lieber-liste"].GetList()[2]->GetInt32(), 59);
+
+			return;
+		}
+
+		// Tests that the default values do not override actually set values
+		TEST_METHOD(DefaultValues_DefaultDoesntOverride)
+		{
+			// Setup
+			ArgList args({
+				"/my/fake/path/wahoo.out",
+				"--dummy",
+				"--elenor-int",
+				"5994",
+				"--federich-float",
+				"420.69",
+				"--siegbert-string",
+				"banana",
+				"--lieber-liste",
+				"banana",
+				"apple",
+				"59"
+				});
+
+			// Exercise
+			Hazelnupp nupp;
+			nupp.SetCrashOnFail(false);
+
+			nupp.RegisterConstraints({
+				ParamConstraint::Require("--elenor-int", {"6871"}),
+				ParamConstraint::Require("--federich-float", {"-199.44"}),
+				ParamConstraint::Require("--siegbert-string", {"bornana"}),
+				ParamConstraint::Require("--lieber-liste", {"bornana", "ollpe", "5"})
+				});
+
+			nupp.Parse(C_Ify(args));
+
+			// Verify
+			Assert::IsTrue(nupp.HasParam("--elenor-int"));
+			Assert::IsTrue(nupp["--elenor-int"].GetDataType() == DATA_TYPE::INT);
+			Assert::AreEqual(nupp["--elenor-int"].GetInt32(), 5994);
+
+			Assert::IsTrue(nupp.HasParam("--federich-float"));
+			Assert::IsTrue(nupp["--federich-float"].GetDataType() == DATA_TYPE::FLOAT);
+			Assert::AreEqual(nupp["--federich-float"].GetFloat32(), 420.69);
+
+			Assert::IsTrue(nupp.HasParam("--siegbert-string"));
+			Assert::IsTrue(nupp["--siegbert-string"].GetDataType() == DATA_TYPE::STRING);
+			Assert::AreEqual(nupp["--siegbert-string"].GetString(), std::string("banana"));
+
+			Assert::IsTrue(nupp.HasParam("--lieber-liste"));
+			Assert::IsTrue(nupp["--lieber-liste"].GetDataType() == DATA_TYPE::LIST);
+			Assert::AreEqual(nupp["--lieber-liste"].GetList()[0]->GetString(), std::string("banana"));
+			Assert::AreEqual(nupp["--lieber-liste"].GetList()[1]->GetString(), std::string("apple"));
+			Assert::AreEqual(nupp["--lieber-liste"].GetList()[2]->GetInt32(), 59);
+
+			return;
+		}
+
+		// Tests that data types get forced according to the constraints
+		TEST_METHOD(ForceTypes)
+		{
+			// Setup
+			ArgList args({
+				"/my/fake/path/wahoo.out",
+				"--dummy",
+				"--num-apples",
+				"39.75",
+				"--table-height",
+				"400",
+				"--license-plate",
+				"193273",
+				"--fav-fruits",
+				"apple",
+				"--indices",
+				"9",
+				"--force",
+				"plsdontuseme"
+				});
+
+			// Exercise
+			Hazelnupp nupp;
+			nupp.SetCrashOnFail(false);
+
+			nupp.RegisterConstraints({
+				ParamConstraint::TypeSafety("--num-apples", DATA_TYPE::INT),
+				ParamConstraint::TypeSafety("--table-height", DATA_TYPE::FLOAT),
+				ParamConstraint::TypeSafety("--license-plate", DATA_TYPE::STRING),
+				ParamConstraint::TypeSafety("--fav-fruits", DATA_TYPE::LIST),
+				ParamConstraint::TypeSafety("--indices", DATA_TYPE::LIST),
+				ParamConstraint::TypeSafety("--force", DATA_TYPE::VOID),
+				});
+
+			nupp.Parse(C_Ify(args));
+
+			// Verify
+			Assert::IsTrue(nupp.HasParam("--num-apples"));
+			Assert::IsTrue(nupp["--num-apples"].GetDataType() == DATA_TYPE::INT);
+			Assert::AreEqual(nupp["--num-apples"].GetInt32(), 39);
+
+			Assert::IsTrue(nupp.HasParam("--table-height"));
+			Assert::IsTrue(nupp["--table-height"].GetDataType() == DATA_TYPE::FLOAT);
+			Assert::AreEqual(nupp["--table-height"].GetFloat32(), 400.0);
+
+			Assert::IsTrue(nupp.HasParam("--license-plate"));
+			Assert::IsTrue(nupp["--license-plate"].GetDataType() == DATA_TYPE::STRING);
+			Assert::AreEqual(nupp["--license-plate"].GetString(), std::string("193273"));
+
+			Assert::IsTrue(nupp.HasParam("--fav-fruits"));
+			Assert::IsTrue(nupp["--fav-fruits"].GetDataType() == DATA_TYPE::LIST);
+			Assert::AreEqual(nupp["--fav-fruits"].GetList()[0]->GetString(), std::string("apple"));
+
+			Assert::IsTrue(nupp.HasParam("--indices"));
+			Assert::IsTrue(nupp["--indices"].GetDataType() == DATA_TYPE::LIST);
+			Assert::AreEqual(nupp["--indices"].GetList()[0]->GetInt32(), 9);
+
+			Assert::IsTrue(nupp.HasParam("--force"));
+			Assert::IsTrue(nupp["--force"].GetDataType() == DATA_TYPE::VOID);
+
+			return;
+		}
+
+		// Tests that an HazelnuppConstraintMissingValue gets raised if a required parameter
+		// is missing and does not have a default parameter
+		TEST_METHOD(Exception_MissingImportant_Parameter_WithoutDefault)
+		{
+			// Setup
+			ArgList args({
+				"/my/fake/path/wahoo.out",
+				"--dummy",
+				"--federich-float",
+				"420.69",
+				"--siegbert-string",
+				"banana",
+				"--lieber-liste",
+				"banana",
+				"apple",
+				"59"
+				});
+
+			Assert::ExpectException<HazelnuppConstraintMissingValue>(
+				[args]
+				{
+					Hazelnupp nupp;
+					nupp.SetCrashOnFail(false);
+
+					nupp.RegisterConstraints({
+						ParamConstraint::Require("--elenor-int"),
+					});
+
+					nupp.Parse(C_Ify(args));
+				}
+				);
+
+			return;
+		}
+
+		// Tests that an HazelnuppConstraintTypeMissmatch gets raised if a required parameter
+		// is missing of the wrong type and cannot be converted
+		TEST_METHOD(Exception_TypeMismatch_Parameter_NotConvertable)
+		{
+			// Setup
+			ArgList args({
+				"/my/fake/path/wahoo.out",
+				"--dummy",
+				"--elenor-int",
+				"hello"
+				"--federich-float",
+				"420.69",
+				"--siegbert-string",
+				"banana",
+				"--lieber-liste",
+				"banana",
+				"apple",
+				"59"
+				});
+
+			Assert::ExpectException<HazelnuppConstraintTypeMissmatch>(
+				[args]
+				{
+					Hazelnupp nupp;
+					nupp.SetCrashOnFail(false);
+
+					nupp.RegisterConstraints({
+						ParamConstraint::TypeSafety("--elenor-int", DATA_TYPE::INT),
+						});
+
+					nupp.Parse(C_Ify(args));
+				}
+				);
+
+			return;
+		}
+	};
+}
diff --git a/Test_Hazelnupp/Constraints.h b/Test_Hazelnupp/Constraints.h
deleted file mode 100644
index f47678a..0000000
--- a/Test_Hazelnupp/Constraints.h
+++ /dev/null
@@ -1,248 +0,0 @@
-#include "CppUnitTest.h"
-#include "helper.h"
-#include "../Hazelnupp/Hazelnupp.h"
-#include "../Hazelnupp/HazelnuppException.h"
-
-using namespace Microsoft::VisualStudio::CppUnitTestFramework;
-
-namespace TestHazelnupp
-{
-	TEST_CLASS(_Constraints)
-	{
-	public:
-
-		// Tests that default values get added
-		TEST_METHOD(DefaultValues_GetAdded)
-		{
-			// Setup
-			ArgList args({
-				"/my/fake/path/wahoo.out",
-				"--dummy",
-				"123"
-			});
-
-			// Exercise
-			Hazelnupp nupp;
-			nupp.SetCrashOnFail(false);
-
-			nupp.RegisterConstraints({
-				ParamConstraint("--elenor-int", {"5994"}),
-				ParamConstraint("--federich-float", {"420.69"}),
-				ParamConstraint("--siegbert-string", {"banana"}),
-				ParamConstraint("--lieber-liste", {"banana", "apple", "59"})
-			});
-
-			nupp.Parse(C_Ify(args));
-
-			// Verify
-			Assert::IsTrue(nupp.HasParam("--elenor-int"));
-			Assert::IsTrue(nupp["--elenor-int"].GetDataType() == DATA_TYPE::INT);
-			Assert::AreEqual(nupp["--elenor-int"].GetInt32(), 5994);
-
-			Assert::IsTrue(nupp.HasParam("--federich-float"));
-			Assert::IsTrue(nupp["--federich-float"].GetDataType() == DATA_TYPE::FLOAT);
-			Assert::AreEqual(nupp["--federich-float"].GetFloat32(), 420.69);
-
-			Assert::IsTrue(nupp.HasParam("--siegbert-string"));
-			Assert::IsTrue(nupp["--siegbert-string"].GetDataType() == DATA_TYPE::STRING);
-			Assert::AreEqual(nupp["--siegbert-string"].GetString(), std::string("banana"));
-
-			Assert::IsTrue(nupp.HasParam("--lieber-liste"));
-			Assert::IsTrue(nupp["--lieber-liste"].GetDataType() == DATA_TYPE::LIST);
-			Assert::AreEqual(nupp["--lieber-liste"].GetList()[0]->GetString(), std::string("banana"));
-			Assert::AreEqual(nupp["--lieber-liste"].GetList()[1]->GetString(), std::string("apple"));
-			Assert::AreEqual(nupp["--lieber-liste"].GetList()[2]->GetInt32(), 59);
-
-			return;
-		}
-
-		// Tests that the default values do not override actually set values
-		TEST_METHOD(DefaultValues_DefaultDoesntOverride)
-		{
-			// Setup
-			ArgList args({
-				"/my/fake/path/wahoo.out",
-				"--dummy",
-				"--elenor-int",
-				"5994",
-				"--federich-float",
-				"420.69",
-				"--siegbert-string",
-				"banana",
-				"--lieber-liste",
-				"banana",
-				"apple",
-				"59"
-			});
-
-			// Exercise
-			Hazelnupp nupp;
-			nupp.SetCrashOnFail(false);
-
-			nupp.RegisterConstraints({
-				ParamConstraint("--elenor-int", {"6871"}),
-				ParamConstraint("--federich-float", {"-199.44"}),
-				ParamConstraint("--siegbert-string", {"bornana"}),
-				ParamConstraint("--lieber-liste", {"bornana", "ollpe", "5"})
-			});
-
-			nupp.Parse(C_Ify(args));
-
-			// Verify
-			Assert::IsTrue(nupp.HasParam("--elenor-int"));
-			Assert::IsTrue(nupp["--elenor-int"].GetDataType() == DATA_TYPE::INT);
-			Assert::AreEqual(nupp["--elenor-int"].GetInt32(), 5994);
-
-			Assert::IsTrue(nupp.HasParam("--federich-float"));
-			Assert::IsTrue(nupp["--federich-float"].GetDataType() == DATA_TYPE::FLOAT);
-			Assert::AreEqual(nupp["--federich-float"].GetFloat32(), 420.69);
-
-			Assert::IsTrue(nupp.HasParam("--siegbert-string"));
-			Assert::IsTrue(nupp["--siegbert-string"].GetDataType() == DATA_TYPE::STRING);
-			Assert::AreEqual(nupp["--siegbert-string"].GetString(), std::string("banana"));
-
-			Assert::IsTrue(nupp.HasParam("--lieber-liste"));
-			Assert::IsTrue(nupp["--lieber-liste"].GetDataType() == DATA_TYPE::LIST);
-			Assert::AreEqual(nupp["--lieber-liste"].GetList()[0]->GetString(), std::string("banana"));
-			Assert::AreEqual(nupp["--lieber-liste"].GetList()[1]->GetString(), std::string("apple"));
-			Assert::AreEqual(nupp["--lieber-liste"].GetList()[2]->GetInt32(), 59);
-
-			return;
-		}
-
-		// Tests that data types get forced according to the constraints
-		TEST_METHOD(ForceTypes)
-		{
-			// Setup
-			ArgList args({
-				"/my/fake/path/wahoo.out",
-				"--dummy",
-				"--num-apples",
-				"39.75",
-				"--table-height",
-				"400",
-				"--license-plate",
-				"193273",
-				"--fav-fruits",
-				"apple",
-				"--indices",
-				"9",
-				"--force",
-				"plsdontuseme"
-			});
-
-			// Exercise
-			Hazelnupp nupp;
-			nupp.SetCrashOnFail(false);
-
-			nupp.RegisterConstraints({
-				ParamConstraint("--num-apples", true, DATA_TYPE::INT),
-				ParamConstraint("--table-height", true, DATA_TYPE::FLOAT),
-				ParamConstraint("--license-plate", true, DATA_TYPE::STRING),
-				ParamConstraint("--fav-fruits", true, DATA_TYPE::LIST),
-				ParamConstraint("--indices", true, DATA_TYPE::LIST),
-				ParamConstraint("--force", true, DATA_TYPE::VOID),
-			});
-
-			nupp.Parse(C_Ify(args));
-
-			// Verify
-			Assert::IsTrue(nupp.HasParam("--num-apples"));
-			Assert::IsTrue(nupp["--num-apples"].GetDataType() == DATA_TYPE::INT);
-			Assert::AreEqual(nupp["--num-apples"].GetInt32(), 39);
-
-			Assert::IsTrue(nupp.HasParam("--table-height"));
-			Assert::IsTrue(nupp["--table-height"].GetDataType() == DATA_TYPE::FLOAT);
-			Assert::AreEqual(nupp["--table-height"].GetFloat32(), 400.0);
-
-			Assert::IsTrue(nupp.HasParam("--license-plate"));
-			Assert::IsTrue(nupp["--license-plate"].GetDataType() == DATA_TYPE::STRING);
-			Assert::AreEqual(nupp["--license-plate"].GetString(), std::string("193273"));
-
-			Assert::IsTrue(nupp.HasParam("--fav-fruits"));
-			Assert::IsTrue(nupp["--fav-fruits"].GetDataType() == DATA_TYPE::LIST);
-			Assert::AreEqual(nupp["--fav-fruits"].GetList()[0]->GetString(), std::string("apple"));
-
-			Assert::IsTrue(nupp.HasParam("--indices"));
-			Assert::IsTrue(nupp["--indices"].GetDataType() == DATA_TYPE::LIST);
-			Assert::AreEqual(nupp["--indices"].GetList()[0]->GetInt32(), 9);
-
-			Assert::IsTrue(nupp.HasParam("--force"));
-			Assert::IsTrue(nupp["--force"].GetDataType() == DATA_TYPE::VOID);
-
-			return;
-		}
-
-		// Tests that an HazelnuppConstraintMissingValue gets raised if a required parameter
-		// is missing and does not have a default parameter
-		TEST_METHOD(Exception_MissingImportant_Parameter_WithoutDefault)
-		{
-			// Setup
-			ArgList args({
-				"/my/fake/path/wahoo.out",
-				"--dummy",
-				"--federich-float",
-				"420.69",
-				"--siegbert-string",
-				"banana",
-				"--lieber-liste",
-				"banana",
-				"apple",
-				"59"
-			});
-
-			Assert::ExpectException<HazelnuppConstraintMissingValue>(
-				[args]
-				{
-					Hazelnupp nupp;
-					nupp.SetCrashOnFail(false);
-
-					nupp.RegisterConstraints({
-						ParamConstraint("--elenor-int", std::vector<std::string>(), true),
-					});
-					
-					nupp.Parse(C_Ify(args));
-				}
-			);
-
-			return;
-		}
-
-		// Tests that an HazelnuppConstraintTypeMissmatch gets raised if a required parameter
-		// is missing of the wrong type and cannot be converted
-		TEST_METHOD(Exception_TypeMismatch_Parameter_NotConvertable)
-		{
-			// Setup
-			ArgList args({
-				"/my/fake/path/wahoo.out",
-				"--dummy",
-				"--elenor-int",
-				"hello"
-				"--federich-float",
-				"420.69",
-				"--siegbert-string",
-				"banana",
-				"--lieber-liste",
-				"banana",
-				"apple",
-				"59"
-			});
-
-			Assert::ExpectException<HazelnuppConstraintTypeMissmatch>(
-				[args]
-				{
-					Hazelnupp nupp;
-					nupp.SetCrashOnFail(false);
-
-					nupp.RegisterConstraints({
-						ParamConstraint("--elenor-int", true, DATA_TYPE::INT),
-					});
-
-					nupp.Parse(C_Ify(args));
-				}
-			);
-
-			return;
-		}
-	};
-}
diff --git a/Test_Hazelnupp/Test_Hazelnupp.vcxproj b/Test_Hazelnupp/Test_Hazelnupp.vcxproj
index 70c5078..a59b932 100644
--- a/Test_Hazelnupp/Test_Hazelnupp.vcxproj
+++ b/Test_Hazelnupp/Test_Hazelnupp.vcxproj
@@ -167,7 +167,6 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="Constraints.h" />
     <ClInclude Include="helper.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
diff --git a/Test_Hazelnupp/Test_Hazelnupp.vcxproj.filters b/Test_Hazelnupp/Test_Hazelnupp.vcxproj.filters
index 6e58c90..87cbe39 100644
--- a/Test_Hazelnupp/Test_Hazelnupp.vcxproj.filters
+++ b/Test_Hazelnupp/Test_Hazelnupp.vcxproj.filters
@@ -18,9 +18,6 @@
     <ClInclude Include="helper.h">
       <Filter>Headerdateien</Filter>
     </ClInclude>
-    <ClInclude Include="Constraints.h">
-      <Filter>Headerdateien</Filter>
-    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Basics.cpp">