c++ - Erase element from vector,and the vector is fill with struct -

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something this:

struct mystruct  {   char straddr[size];   int port;   int id;   ....... };  mystruct s1={......}; mystruct s2={......}; mystruct s3={......};  vector test; test.emplace_back(s1); test.emplace_back(s2); test.emplace_back(s3);

now want erase element straddr="abc" , port = 1001. should do? , don't want this. 

    for(auto = test.begin();it != test.end();)    {       if(it->port == port && 0 == strcmp(it->straddr,straddr))          = test.erase(it);      else         it++;    }

first of all, use std::string instead of char [size] can use == instead of strcmp , other such c-string functions.

then use std::remove_if() along erase() as:

test.erase (     std::remove_if(         test.begin(),          test.end(),          [](mystruct const & s) {              return s.port == 1001 && s.straddr == "abc";          }     ),      test.end() );

it idiomatic solution problem , can read more here:

note solution remove elements container predicated returns true. however, if known in advance there @ 1 item matching predicate, std::find_if accompanied erase() faster:

auto = std::find_if(              test.begin(),               test.end(),               [](mystruct const & s) {                 return s.port == 1001 && s.straddr == "abc";               }           ); if(it != test.end())//make sure dont pass end() iterator.     test.erase(it);

hope helps.


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