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初始化我有这样的(这是一个Node.js的插件)给整数默认值,如果它们是作为空
void Method(const v8::FunctionCallbackInfo<v8::Value>& args) {
int count = args[2]->ToNumber()->NumberValue();
int priority = args[3]->ToNumber()->NumberValue();
int priority_search_cap = args[4]->ToNumber()->NumberValue();
cout << " count => " << count << endl;
cout << " priority => " << priority << endl;
cout << " priority_search_cap => " << priority_search_cap << endl;
}
我所得到的注销是:
count => -2147483648
priority => -2147483648
priority_search_cap => -2147483648
我想什么要做的是给这些变量的默认值,以防没有值传递给他们正确地初始化它们? (含义,args [2],args [3],args [4]未定义。)
如何给这些整数默认值?
为什么不在调用'ToNumber'之前检查args类型(例如'Value :: IsUndefined')? – DMaster