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stD EACh

for_each第三个参数传入的是函数名称,通过模板生成代码后的函数指针,for_each需要调用,可以看看STL的for_each函数的源码。 #include #include #include #include #include using namespace std; void print(int a) { cout

适当可以改进一点。std::map m1{ { 1, 2 }, { 3, 4 } };std::for_each(m1.begin(), m1.end(), [](std::map::reference a){ std::cout

#include#include#includeint main(){map words;map::iterator it=words.begin();for(;it!=words...

stdClass Object(。。。。)这是一个对象,你可以这样 foreach ($parame as $key => $val){ $b=$val->a; $c=$val->b; $d=$val->c; }

$a=array([0] => stdClass Object ( [ID] => 15059 [Province] => 河北 [City] => 石家庄 ) [1] => stdClass Object ( [ID] => 15059 [Province] => 河北 [City] => 邯郸 ) [2] => stdClass Object ( [ID] => 15059 [Province] => 河北 [City] =...

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