mixin.methods.getList(xxx) 是axios的二次封装 是通过Promise进行基本封装 let a mixin.methods.getList(toosSet.gettype);let b mixin.methods.getList(toosSet.gettypes);let c mixin.methods.getList(toosSet.gettypess);Promise.all([a, b, c]).then((res) > {aler…
问:此代码中有几次构造,几次拷贝构造?
W f(W u)
{W v(u);W w v;return w;
}
int main()
{w x;w y f(x);return 0;解析:一次构造,四次拷贝构造。
再来一题
W f(W u)…