C++ Tutorial => Conversion to function pointer

This function pointer is in no way reliant on the source lambda closure's existence. It therefore may outlive the lambda closure. This feature is mainly useful ... DownloadC++(PDF) C++ GettingstartedwithC++ AwesomeBook AwesomeCommunity AwesomeCourse AwesomeTutorial AwesomeYouTube Alignment ArgumentDependentNameLookup ArithmiticMetaprogramming Arrays AtomicTypes Attributes auto Basicinput/outputinc++ BasicTypeKeywords Bitfields BitManipulation BitOperators BuildSystems Cincompatibilities C++Containers C++DebuggingandDebug-preventionTools&Techniques C++function"callbyvalue"vs."callbyreference" C++Streams C++11MemoryModel CallableObjects Classes/Structures Clientserverexamples Commoncompile/linkererrors(GCC) CompilingandBuilding ConcurrencyWithOpenMP ConstCorrectness constkeyword Constantclassmemberfunctions constexpr CopyElision CopyingvsAssignment CuriouslyRecurringTemplatePattern(CRTP) DataStructuresinC++ Dateandtimeusingheader decltype DesignpatternimplementationinC++ Digitseparators Enumeration Exceptions Explicittypeconversions Expressiontemplates FileI/O FloatingPointArithmetic FlowControl FoldExpressions Friendkeyword FunctionOverloading FunctionTemplateOverloading FuturesandPromises HeaderFiles Implementation-definedbehavior Inlinefunctions Inlinevariables InternationalizationinC++ Iteration Iterators Keywords Lambdas Whatisalambdaexpression? Capturebyreference Capturebyvalue Classlambdasandcaptureofthis Conversiontofunctionpointer Defaultcapture Generalizedcapture Genericlambdas PortinglambdafunctionstoC++03usingfunctors Recursivelambdas Specifyingthereturntype Usinglambdasforinlineparameterpackunpacking Layoutofobjecttypes Linkagespecifications Literals Loops Memorymanagement Metaprogramming MoreundefinedbehaviorsinC++ MoveSemantics mutablekeyword Mutexes Namespaces Non-StaticMemberFunctions OneDefinitionRule(ODR) OperatorOverloading operatorprecedence Optimization OptimizationinC++ Overloadresolution Parameterpacks PerfectForwarding PimplIdiom Pointers Pointerstomembers Polymorphism Preprocessor Profiling RAII:ResourceAcquisitionIsInitialization Randomnumbergeneration RecursioninC++ RecursiveMutex RefactoringTechniques References Regularexpressions ResourceManagement ReturnTypeCovariance Returningseveralvaluesfromafunction RTTI:Run-TimeTypeInformation Scopes Semaphore SFINAE(SubstitutionFailureIsNotAnError) SidebySideComparisonsofclassicC++examplessolvedviaC++vsC++11vsC++14vsC++17 SingletonDesignPattern SmartPointers Sorting SpecialMemberFunctions StandardLibraryAlgorithms static_assert std::any std::array std::atomics std::forward_list std::function:Towrapanyelementthatiscallable std::integer_sequence std::iomanip std::map std::optional std::pair std::setandstd::multiset std::string std::variant std::vector Storageclassspecifiers Streammanipulators Templates TheISOC++Standard TheRuleofThree,Five,AndZero TheThisPointer Threadsynchronizationstructures Threading Trailingreturntype typededuction TypeErasure TypeInference TypeKeywords TypeTraits Typedefandtypealiases UndefinedBehavior Unions UnitTestinginC++ Unnamedtypes Unspecifiedbehavior User-DefinedLiterals Usingdeclaration Usingstd::unordered_map ValueandReferenceSemantics ValueCategories VariableDeclarationKeywords VirtualMemberFunctions C++ GettingstartedwithC++ AwesomeBook AwesomeCommunity AwesomeCourse AwesomeTutorial AwesomeYouTube Alignment ArgumentDependentNameLookup ArithmiticMetaprogramming Arrays AtomicTypes Attributes auto Basicinput/outputinc++ BasicTypeKeywords Bitfields BitManipulation BitOperators BuildSystems Cincompatibilities C++Containers C++DebuggingandDebug-preventionTools&Techniques C++function"callbyvalue"vs."callbyreference" C++Streams C++11MemoryModel CallableObjects Classes/Structures Clientserverexamples Commoncompile/linkererrors(GCC) CompilingandBuilding ConcurrencyWithOpenMP ConstCorrectness constkeyword Constantclassmemberfunctions constexpr CopyElision CopyingvsAssignment CuriouslyRecurringTemplatePattern(CRTP) DataStructuresinC++ Dateandtimeusingheader decltype DesignpatternimplementationinC++ Digitseparators Enumeration Exceptions Explicittypeconversions Expressiontemplates FileI/O FloatingPointArithmetic FlowControl FoldExpressions Friendkeyword FunctionOverloading FunctionTemplateOverloading FuturesandPromises HeaderFiles Implementation-definedbehavior Inlinefunctions Inlinevariables InternationalizationinC++ Iteration Iterators Keywords Lambdas Whatisalambdaexpression? Capturebyreference Capturebyvalue Classlambdasandcaptureofthis Conversiontofunctionpointer Defaultcapture Generalizedcapture Genericlambdas PortinglambdafunctionstoC++03usingfunctors Recursivelambdas Specifyingthereturntype Usinglambdasforinlineparameterpackunpacking Layoutofobjecttypes Linkagespecifications Literals Loops Memorymanagement Metaprogramming MoreundefinedbehaviorsinC++ MoveSemantics mutablekeyword Mutexes Namespaces Non-StaticMemberFunctions OneDefinitionRule(ODR) OperatorOverloading operatorprecedence Optimization OptimizationinC++ Overloadresolution Parameterpacks PerfectForwarding PimplIdiom Pointers Pointerstomembers Polymorphism Preprocessor Profiling RAII:ResourceAcquisitionIsInitialization Randomnumbergeneration RecursioninC++ RecursiveMutex RefactoringTechniques References Regularexpressions ResourceManagement ReturnTypeCovariance Returningseveralvaluesfromafunction RTTI:Run-TimeTypeInformation Scopes Semaphore SFINAE(SubstitutionFailureIsNotAnError) SidebySideComparisonsofclassicC++examplessolvedviaC++vsC++11vsC++14vsC++17 SingletonDesignPattern SmartPointers Sorting SpecialMemberFunctions StandardLibraryAlgorithms static_assert std::any std::array std::atomics std::forward_list std::function:Towrapanyelementthatiscallable std::integer_sequence std::iomanip std::map std::optional std::pair std::setandstd::multiset std::string std::variant std::vector Storageclassspecifiers Streammanipulators Templates TheISOC++Standard TheRuleofThree,Five,AndZero TheThisPointer Threadsynchronizationstructures Threading Trailingreturntype typededuction TypeErasure TypeInference TypeKeywords TypeTraits Typedefandtypealiases UndefinedBehavior Unions UnitTestinginC++ Unnamedtypes Unspecifiedbehavior User-DefinedLiterals Usingdeclaration Usingstd::unordered_map ValueandReferenceSemantics ValueCategories VariableDeclarationKeywords VirtualMemberFunctions C++ Lambdas Conversiontofunctionpointer Example Ifalambda'scapturelistisempty,thenthelambdahasanimplicitconversiontoafunctionpointerthattakesthesameargumentsandreturnsthesamereturntype: autosorter=[](intlhs,intrhs)->bool{returnlhs