- use collection initializer

LightweightIocContainer/Factories/TypedFactory.cs

@@ -51,7 +51,7 @@ public class TypedFactory<TFactory> : TypedFactoryBase<TFactory>, ITypedFactory<
         FieldBuilder helperFieldBuilder = typeBuilder.DefineField("_helper", typeof(FactoryHelper), FieldAttributes.Private | FieldAttributes.InitOnly);
 
         //add ctor
-        ConstructorBuilder constructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.HasThis, new[] {typeof(IocContainer), typeof(FactoryHelper)});
+        ConstructorBuilder constructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.HasThis, [typeof(IocContainer), typeof(FactoryHelper)]);
         ILGenerator constructorGenerator = constructorBuilder.GetILGenerator();
         constructorGenerator.Emit(OpCodes.Ldarg_0);
         constructorGenerator.Emit(OpCodes.Ldarg_1);
@@ -129,13 +129,13 @@ public class TypedFactory<TFactory> : TypedFactoryBase<TFactory>, ITypedFactory<
                 generator.EmitCall(OpCodes.Call, emptyArray, null);
             }
             
-            generator.EmitCall(OpCodes.Call, typeof(FactoryHelper).GetMethod(nameof(FactoryHelper.ConvertPassedNull), new[] { typeof(MethodBase), typeof(object?[]) })!, null);
+            generator.EmitCall(OpCodes.Call, typeof(FactoryHelper).GetMethod(nameof(FactoryHelper.ConvertPassedNull), [typeof(MethodBase), typeof(object?[])])!, null);
             generator.Emit(OpCodes.Stloc_1);
             generator.Emit(OpCodes.Ldarg_0);
             generator.Emit(OpCodes.Ldfld, containerFieldBuilder);
             generator.Emit(OpCodes.Ldloc_1);
 
-            generator.EmitCall(OpCodes.Call, typeof(IocContainer).GetMethod(nameof(IocContainer.FactoryResolve), new[] { typeof(object?[]) })!.MakeGenericMethod(createMethod.ReturnType), null);
+            generator.EmitCall(OpCodes.Call, typeof(IocContainer).GetMethod(nameof(IocContainer.FactoryResolve), [typeof(object?[])])!.MakeGenericMethod(createMethod.ReturnType), null);
             generator.Emit(OpCodes.Castclass, createMethod.ReturnType);
             generator.Emit(OpCodes.Ret);
         }

LightweightIocContainer/IocContainer.cs

@@ -22,8 +22,8 @@ public class IocContainer : IIocContainer, IIocResolver
 {
     private readonly RegistrationFactory _registrationFactory;
 
-    private readonly List<(Type type, object? instance)> _singletons = new();
-    private readonly List<(Type type, Type scope, ConditionalWeakTable<object, object?> instances)> _multitons = new();
+    private readonly List<(Type type, object? instance)> _singletons = [];
+    private readonly List<(Type type, Type scope, ConditionalWeakTable<object, object?> instances)> _multitons = [];
 
     private readonly List<Type> _ignoreConstructorAttributes;
 
@@ -33,8 +33,8 @@ public class IocContainer : IIocContainer, IIocResolver
     public IocContainer()
     {
         _registrationFactory = new RegistrationFactory(this);
-        _ignoreConstructorAttributes = new List<Type>();
-        Registrations = new List<IRegistration>();
+        _ignoreConstructorAttributes = [];
+        Registrations = [];
     }
 
     internal List<IRegistration> Registrations { get; }
@@ -161,7 +161,7 @@ public class IocContainer : IIocContainer, IIocResolver
         if (registration == null)
             return (false, new object(), new TypeNotRegisteredException(typeof(T)));
 
-        List<Type> internalResolveStack = resolveStack == null ? new List<Type>() : new List<Type>(resolveStack);
+        List<Type> internalResolveStack = resolveStack == null ? [] : [..resolveStack];
         (bool success, internalResolveStack, CircularDependencyException? circularDependencyException) = CheckForCircularDependencies<T>(internalResolveStack);
         
         if (!success && circularDependencyException is not null)
@@ -198,7 +198,7 @@ public class IocContainer : IIocContainer, IIocResolver
 
             object multitonScopeArgument = TryGetMultitonScopeArgument(multitonRegistration, arguments);
 
-            parametersToResolve ??= new List<object?>();
+            parametersToResolve ??= [];
             parametersToResolve.Insert(0, multitonScopeArgument); //insert scope at first place, won't be passed to ctor when creating multiton
         }
             
@@ -233,7 +233,7 @@ public class IocContainer : IIocContainer, IIocResolver
         if (genericMethod == null)
             throw new GenericMethodNotFoundException(nameof(TryResolve));
         
-        object? resolvedValue = genericMethod.Invoke(this, new object?[]{arguments, resolveStack, isFactoryResolve});
+        object? resolvedValue = genericMethod.Invoke(this, [arguments, resolveStack, isFactoryResolve]);
         
         if (resolvedValue is not ValueTuple<bool, object, Exception?> resolvedTuple)
             throw new Exception("Invalid return value!");
@@ -255,7 +255,7 @@ public class IocContainer : IIocContainer, IIocResolver
         if (toBeResolvedPlaceholder.Parameters == null)
             return CreateInstance<T>(toBeResolvedPlaceholder.ResolvedRegistration, null);
             
-        List<object?> parameters = new();
+        List<object?> parameters = [];
         foreach (object? parameter in toBeResolvedPlaceholder.Parameters)
         {
             if (parameter != null)
@@ -519,12 +519,12 @@ public class IocContainer : IIocContainer, IIocResolver
     {
         List<ParameterInfo> constructorParameters = constructor.GetParameters().ToList();
             
-        List<ConstructorNotMatchingException> exceptions = new();
-        List<object?> parameters = new();
+        List<ConstructorNotMatchingException> exceptions = [];
+        List<object?> parameters = [];
 
         List<object?>? passedArguments = null;
         if (arguments != null)
-            passedArguments = new List<object?>(arguments);
+            passedArguments = [..arguments];
 
         foreach (ParameterInfo parameter in constructorParameters)
         {
@@ -664,9 +664,9 @@ public class IocContainer : IIocContainer, IIocResolver
     private (bool success, List<Type> resolveStack, CircularDependencyException? exception) CheckForCircularDependencies<T>(List<Type>? resolveStack)
     {
         if (resolveStack == null) //first resolve call
-            resolveStack = new List<Type> {typeof(T)}; //create new stack and add the currently resolving type to the stack
+            resolveStack = [typeof(T)]; //create new stack and add the currently resolving type to the stack
         else if (resolveStack.Contains(typeof(T)))
-            return (false, new List<Type>(), new CircularDependencyException(typeof(T), resolveStack)); //currently resolving type is still resolving -> circular dependency
+            return (false, [], new CircularDependencyException(typeof(T), resolveStack)); //currently resolving type is still resolving -> circular dependency
         else //not the first resolve call in chain but no circular dependencies for now
             resolveStack.Add(typeof(T)); //add currently resolving type to the stack
             

LightweightIocContainer/Registrations/MultipleRegistration.cs

@@ -23,7 +23,7 @@ internal abstract class MultipleRegistration<TInterface1, TImplementation> : Typ
     /// <param name="container">The current instance of the <see cref="IIocContainer"/></param>
     protected MultipleRegistration(Type interfaceType1, Type implementationType, Lifestyle lifestyle, IocContainer container)
         : base(interfaceType1, implementationType, lifestyle, container) =>
-        Registrations = new List<IRegistration>();
+        Registrations = [];
 
     /// <summary>
     /// A <see cref="List{T}"/> of <see cref="IRegistration"/>s that are registered within this <see cref="MultipleRegistration{TInterface1,TInterface2}"/>
@@ -50,11 +50,11 @@ internal class MultipleRegistration<TInterface1, TInterface2, TImplementation> :
     public MultipleRegistration(Type interfaceType1, Type interfaceType2, Type implementationType, Lifestyle lifestyle, IocContainer container)
         : base(interfaceType1, implementationType, lifestyle, container)
     {
-        Registrations = new List<IRegistration>
-        { 
+        Registrations =
+        [
             new TypedRegistration<TInterface1, TImplementation>(interfaceType1, implementationType, lifestyle, container),
             new TypedRegistration<TInterface2, TImplementation>(interfaceType2, implementationType, lifestyle, container)
-        };
+        ];
     }
 
     /// <summary>
@@ -97,12 +97,12 @@ internal class MultipleRegistration<TInterface1, TInterface2, TInterface3, TImpl
     public MultipleRegistration(Type interfaceType1, Type interfaceType2, Type interfaceType3, Type implementationType, Lifestyle lifestyle, IocContainer container)
         : base(interfaceType1, implementationType, lifestyle, container)
     {
-        Registrations = new List<IRegistration>
-        {
+        Registrations =
+        [
             new TypedRegistration<TInterface1, TImplementation>(interfaceType1, implementationType, lifestyle, container),
             new TypedRegistration<TInterface2, TImplementation>(interfaceType2, implementationType, lifestyle, container),
             new TypedRegistration<TInterface3, TImplementation>(interfaceType3, implementationType, lifestyle, container)
-        };
+        ];
     }
 
     /// <summary>
@@ -149,13 +149,13 @@ internal class MultipleRegistration<TInterface1, TInterface2, TInterface3, TInte
     public MultipleRegistration(Type interfaceType1, Type interfaceType2, Type interfaceType3, Type interfaceType4, Type implementationType, Lifestyle lifestyle, IocContainer container)
         : base(interfaceType1, implementationType, lifestyle, container)
     {
-        Registrations = new List<IRegistration>
-        {
+        Registrations =
+        [
             new TypedRegistration<TInterface1, TImplementation>(interfaceType1, implementationType, lifestyle, container),
             new TypedRegistration<TInterface2, TImplementation>(interfaceType2, implementationType, lifestyle, container),
             new TypedRegistration<TInterface3, TImplementation>(interfaceType3, implementationType, lifestyle, container),
             new TypedRegistration<TInterface4, TImplementation>(interfaceType4, implementationType, lifestyle, container)
-        };
+        ];
     }
 
     /// <summary>
@@ -206,14 +206,14 @@ internal class MultipleRegistration<TInterface1, TInterface2, TInterface3, TInte
     public MultipleRegistration(Type interfaceType1, Type interfaceType2, Type interfaceType3, Type interfaceType4, Type interfaceType5, Type implementationType, Lifestyle lifestyle, IocContainer container)
         : base(interfaceType1, implementationType, lifestyle, container)
     {
-        Registrations = new List<IRegistration>
-        {
+        Registrations =
+        [
             new TypedRegistration<TInterface1, TImplementation>(interfaceType1, implementationType, lifestyle, container),
             new TypedRegistration<TInterface2, TImplementation>(interfaceType2, implementationType, lifestyle, container),
             new TypedRegistration<TInterface3, TImplementation>(interfaceType3, implementationType, lifestyle, container),
             new TypedRegistration<TInterface4, TImplementation>(interfaceType4, implementationType, lifestyle, container),
             new TypedRegistration<TInterface5, TImplementation>(interfaceType5, implementationType, lifestyle, container)
-        };
+        ];
     }
 
     /// <summary>

Test.LightweightIocContainer/AssemblyInstallerTest.cs

@@ -33,11 +33,11 @@ public class AssemblyInstallerTest
     [Test]
     public void TestInstall()
     {
-        List<Type> types = new()
-        {
+        List<Type> types =
+        [
             typeof(object),
             typeof(TestInstaller)
-        };
+        ];
 
         AssemblyWrapper assemblyMock = Substitute.For<AssemblyWrapper>();
         assemblyMock.GetTypes().Returns(types.ToArray());
@@ -60,11 +60,11 @@ public class AssemblyInstallerTest
     [Test]
     public void TestFromAssemblyInstance()
     {
-        List<Type> types = new()
-        {
+        List<Type> types =
+        [
             typeof(object),
             typeof(TestInstaller)
-        };
+        ];
 
         AssemblyWrapper assemblyMock = Substitute.For<AssemblyWrapper>();
         assemblyMock.GetTypes().Returns(types.ToArray());

Test.LightweightIocContainer/EnumerableExtensionTest.cs

@@ -34,20 +34,20 @@ public class EnumerableExtensionTest
     [SuppressMessage("ReSharper", "CollectionNeverUpdated.Local")]
     public void TestFirstOrGivenNoPredicateEmpty()
     {
-        List<ListObject> list = new();
+        List<ListObject> list = [];
         Assert.That(list.FirstOrGiven<ListObject, Given>(), Is.InstanceOf<Given>());
     }
 
     [Test]
     public void TestFirstOrGivenNoPredicate()
     {
-        List<ListObject> list = new()
-        {
-            new ListObject {Index = 0},
-            new ListObject {Index = 1},
-            new ListObject {Index = 2},
-            new ListObject {Index = 3}
-        };
+        List<ListObject> list =
+        [
+            new ListObject { Index = 0 },
+            new ListObject { Index = 1 },
+            new ListObject { Index = 2 },
+            new ListObject { Index = 3 }
+        ];
 
         ListObject listObject = list.FirstOrGiven<ListObject, Given>();
             
@@ -59,20 +59,20 @@ public class EnumerableExtensionTest
     [SuppressMessage("ReSharper", "CollectionNeverUpdated.Local")]
     public void TestFirstOrGivenPredicateEmpty()
     {
-        List<ListObject> list = new();
+        List<ListObject> list = [];
         Assert.That(list.FirstOrGiven<ListObject, Given>(o => o.Index == 2), Is.InstanceOf<Given>());
     }
 
     [Test]
     public void TestFirstOrGivenPredicate()
     {
-        List<ListObject> list = new()
-        {
-            new ListObject {Index = 0},
-            new ListObject {Index = 1},
-            new ListObject {Index = 2},
-            new ListObject {Index = 3}
-        };
+        List<ListObject> list =
+        [
+            new ListObject { Index = 0 },
+            new ListObject { Index = 1 },
+            new ListObject { Index = 2 },
+            new ListObject { Index = 3 }
+        ];
 
         ListObject listObject = list.FirstOrGiven<ListObject, Given>(o => o.Index == 2);