3.2. 方法二:使用ByteBuffer byte[]byteArray=newbyte[10];ByteBufferbb=ByteBuffer.wrap(byteArray);intbyteLength=bb.remaining();System.out.println("Byte array length: "+byteLength); 1. 2. 3. 4. 3.3. 方法三:使用Unsafe类 byte[]byteArray=newbyte[10];Unsafeunsafe=Unsafe.getUnsafe();intbyteLength...
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定义 _ENFORCE_BAN_OF_MACRO_NEW 所执行的操作正如其名称所示。 为了实现各种优化和调试检查,C++ 标准库实现特意中断了 Visual Studio 各版本(2005、2008、2010、2012)中的二进制文件兼容性。 如果使用 C++ 标准库,则使用不同版本编译的对象文件和静态库无法混合在同一个二进制文件(EXE 或 DLL)中,并且无法在...
// 按字节截取字符串 utf-8不乱码 func SubstrByByte(str string, length int) string { bs := []byte(str)[:length 1.9K150 c++语言截取字符串,详解C++ string常用截取字符串方法 string常用截取字符串方法有很多,但是配合使用以下两种,基本都能满足要求: find(string strSub, npos); find_last_of(string...
intBuilByteArray(byte seq, byte* payload,intpayloadlen, byte* data,intlen){if(data ==NULL)return-1;// 判断缓冲区长度是否足够if(len < payloadlen +4+3)return-1;// 用于记录长度/写入位置intidx =0;// 写数据包头// memcpy(&data[idx], PktHead, sizeof(PktHead)); // idx=0 可以直接...
[C\C++] - putting the window in center of screen [C++ 2010] How to create big array sizes? [HELP]How to call a function in another process [SOLVED] Get process name image from PID [SOLVED] GetPrivateProfileString problems C++ I can't get it to work or I am doing it wrong... [...
获取数组长度:arraylength 检相类实例或数组属性:instanceof,checkcast 操作数栈管理:pop,pop2,dup,dup2,dup_xl,dup2_xl,dup_x2,dup2_x2,swap 有条件转移: ifeq,iflt,ifle,ifne,ifgt,ifge,ifnull,ifnonnull,if_icmpeq,if_icmpene, if_icmplt,if_icmpgt,if_icmple,if_icmpge,if_acmpeq,if_acmpne...
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StringKey is slower than IntKey because matching the character string of property names is required. IntKey works by reading the array length, then for (array length) { binary decode }. StringKey works by reading map length, for (map length) { decode key, lookup key, binary decode }, ...