std:map<int, string> personnel; 这样就定义了一个用int作为索引,并拥有相关联的指向string的指针. 为了使用方便,可以对模板类进行一下类型定义, typedefmap<int,CString> UDT_MAP_INT_CSTRING; UDT_MAP_INT_CSTRING enumMap; 4,map的构造函数 map共提供了6个构造函数,这块涉及到内存分配器这些东西,略过不表...
map<int,string> ID_Name;//ID_Name中没有关键字2016,使用[]取值会导致插入//因此,下面语句不会报错,但打印结果为空cout<<ID_Name[2016].c_str()<<endl;//使用at会进行关键字检查,因此下面语句会报错ID_Name.at(2016) ="Bob"; 1 2 3 4 5 6 7 8 ——— 四. 容量查询 // 查询map是否为空boo...
Map<int, string> mapStudent; mapStudent.insert(pair<int, string>(1, “student_one”)); mapStudent.insert(pair<int, string>(2, “student_two”)); mapStudent.insert(pair<int, string>(3, “student_three”)); map<int, string>::iterator iter; iter = mapStudent.find(1); if(iter !=...
map<string,CAgent>::iterator iter; for(iter = m_AgentClients.begin(); iter != m_AgentClients.end(); ++iter) { if(iter->first=="8001" { this->SendMsg(iter->second.pSocket,strMsg);//iter->first } } //查找: map<string,CAgent>::iterator iter=m_AgentClients.find(strAgentName); ...
public enum OrderEnum1 { ORDER_A("A", "序号A"), ORDER_B("B", "序号B"), ORDER_C("C", "序号C"), ORDER_OTH("D", "其他序号"); @Setter @Getter private String code; @Setter @Getter private String desc; OrderEnum1(String code, String desc) { ...
void using_obj_name_map() { std::map<ObjName, int> name_id_map; for (size_t i = 0; i < obj_num; i++) { name_id_map.emplace("scene_" + std::to_string(i), i); } std::cout << "---begin enum map---\n"; for (const std::pair<ObjName, int>& pair : name_id...
IntWritable>{private final static IntWritable one = new IntWritable(1);private Text word = new Text();// 开始 Map 过程public void map(Object key, Text value, Context context)throws IOException, InterruptedException {StringTokenizer itr = new StringTokenizer(value.toString());//遍历 Map 里面的字...
▪Color.parceColor(String colorString),对应十六进制 •「32 bit」:在24位的基础上,增加多8个位的透明通道。 色深会影响「图片的整体质量」,我们可以来看同一张图片在不同色深下的表现: 24-bit color: 224 = 16,777,216 colors, 45 KB 8-bit color: 28 = 256 colors, 17 KB ...
markers.attr.r.aggregate.key:(string)Which column we'll use to aggregate the value (it need to be a number) markers.attr.r.aggregate.mode:(enum('sum', 'count', 'avg', 'min', 'max', '50percentile', '95percentile'), default to 'count')what aggreation function we'll use. ...
Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping). For example, to either create or append a String msg to a value mapping: map.compute(key, (k, v) -> (v == null) ? msg : v.concat(msg))...