C++ Insight

 ETL(Embedded Template Library) Threadpool pattern (Optimization of thread based system) Object pool pattern (for configuration reading) string pool memory pool Fast Lane pattern (for file or db reading) singleton pattern std::async valarray std::span Serialization(Protobuffer/Kafka)

  One Definition Rule Rule of three Tagged Constructors    Small object optimization( https://riptutorial.com/cplusplus/example/31654/small-object-optimization) Empty Base Class Optimization Optimizing by executing less code Expression templates Fold Expressions Perfect forwarding Returning several values continuation passing style Function Object Consumer Returning several values from a function Argument Dependent Name Lookup A moved-from optional Constexpr unions Deferred argument evaluation Preconditions Empty list initialization Intuitive interface The inline keyword as ODR guard dismisser noexcept destructors Value-initialization with C++ Too perfect forwarding variadic macros Ref-qualifiers Inadvertent conversions conditional copy constructor String’s interface Efficient optional values Overload resolution Sessions and object lifetimes Competing constructors Toggles in functions Compile-time string concatenation A friendly type predicate Requires-expressio...

 http://cplusplus.bordoon.com/cplusplusadvice.html https://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Print_Version RTTI Virtual functions shared_ptr etc Templates Virtual inheriting Variadic macros Also useful: Attributes (it depends on your compiler) Variadic templates Variadic functions Constexpr (sorting in compile time / calculating hash of strings etc... but the latter is related to the last section) Lambdas Useful for brainfucking or in special cases: CRTP SFINAE inable_if (type traits) Foreach macro User-defined literals opaque pointer https://akrzemi1.wordpress.com/page/2/ https://www.ritambhara.in/category/cpp/

 gcc -g -lpthread -I <path> -std=c++ 

 https://bastian.rieck.me/blog/posts/2015/event_system_cxx11/ https://www.codeproject.com/Articles/6614/Generic-Observer-Pattern-and-Events-in-C

Orion Innovations class A {           public:     A()     {         printf("A def ctor\n");     }     ~A()     {         printf("~A def dector\n");     }     char ac; }; static A statObject; int main() {     printf("Size of A = %d\n", sizeof(A));     printf("main()\n"); } //===================== //output: here // A def ctor Size of A = 1 main() ~A def dector struct A {     A() { cout << "A" << endl; }     ~A() { cout << "~A" << endl; } }; struct B {     B() { cout << "B" << endl; }     ~B() { cout << "~B" << endl; } }; struct D {     D( D& d ) { cout << "&D" << endl; }     D() { cout << "D" <...

 show equipment ont interface 1/1/3/5/1 configure equipment ont interface 1/1/3/5/1 sernum ALCL:F8612E96  voip-allowed enable sw-ver-pland  disabled # admin state up admin state up exit .. 5 times configure vlan id 40 mode residential-bridge new-broadcast enable new-secure-fwd enable in-qos-prof-name name:Default_TC1 configure vlan id 30 mode residential-bridge new-broadcast enable new-secure-fwd enable in-qos-prof-name name:Default_TC1 configure vlan id 30  no vlan id 30 configure qos profiles bandwidth us_prof_voip_2pots_bw committed-info-rate 600 assured-info-rate 600 excessive-info-rate 600 delay-tolerance 8 configure qos interface 1/1/3/5/1/voip upstream-queue [0...7] bandwidth-profile name:us_prof_voip_2pots_bw typ:isadmin># configure qos interface 1/1/3/5/1/voip upstream-queue [0...7] bandwidth-profile name:us_prof_voip_2pots_bw typ:isadmin># configure qos interface 1/1/3/5/1/voip upstream-queue 0 bandwidth-profile name:us_prof_voip_2pots_bw typ:isadmin...