hex
语法
hex(X, [reverse=false])
详情
把如下数据类型转换为十六进制数据显示：
- INTEGRAL
- FLOAT
- COMPLEX
- BINARY
注：
与 Python 的内置函数
hex 类似：| 特性 | DolphinDB hex |
Python hex |
|---|---|---|
| 支持类型 | 整型、浮点、复数、二进制 | 仅整型 |
| 输入形式 | 标量、向量 | 仅标量 |
| 输出格式 | 完整字节表示（如 "00000010"） |
带 0x 前缀（如 0x10） |
| 字节序控制 | 支持 reverse 参数 | 无此功能 |
参数
X 是一个整型标量或向量。
reverse 是一个布尔值，表示高低位是否互换。默认值是 false。
返回值
STRING 类型的标量或向量，表示数据对应的十六进制数。
例子
hex(16 25);
//output: ["00000010","00000019"]
hex(16 25,true);
//output: ["10000000","19000000"]
hex(compress(1 2 3));
//output: ["00","05","ff","01","04","04","00","00","ff","ff","ff","ff","03","00","00","00","ff","ff","ff","ff","0d","00","00","80","c0","01","00","00","00","02","00","00","00","03","00","00","00"]
a = hex(123.456 3.1415926)
print a
//output: ["405edd2f1a9fbe77","400921fb4d12d84a"]