②Custom function: Custom function is a function written by the developer according to the actual needs. By customizing functions, developers can encapsulate specific functionality inside functions, improving code readability, maintainability, and reusability.4. 如何定义和调用函数 4. How to define and ...
{char*source_ip ="192.168.20.9";//真实 IP 地址char*source_mac ="00:0C:29:AF:FB:D3";//欺骗 MAC 地址char*dest_ip ="192.168.20.8";char*dest_mac ="00:0C:29:BD:1C:EF";char*buf = (char*)malloc(sizeof(structether_header) +ARP_LEN); encapsulate_frame(dest_mac, source_mac, E...
若要使用嵌入的只读字体,应用程序必须指定CLIP_ENCAPSULATE。 若要实现设备、TrueType 和矢量字体的一致旋转,应用程序可以使用按位“或”运算符 (|) 将CLIP_LH_ANGLES值与其他任何nClipPrecision值组合在一起。 如果设置了CLIP_LH_ANGLES位,则所有字体的旋转取决于坐标系统的方向是左侧还是右侧。 (有关坐标系统方向的...
Blocks are a language feature introduced to C, Objective-C and C++ to represent a unit of work; they encapsulate a block of code along with captured state, which makes them similar to closures in other programming languages. Blocks are often used to simplify common tasks such as collection en...
这里可能用到的设计模式有:Factory, Decorator, Encapsulate 等。用一句话来说,就是包装。将不同种类的协议封装成一个统一的接口展现给用户。用最简单的USB-A 口来说,他就打包了两种功能,一个是供电,再一个就是数据传输。这基本上是所有用户都能认同的特性。但是 USB-C 承载了更多的内容,这些内容与用户的需求...
To use an embedded read-only font, an application must specifyCLIP_ENCAPSULATE. To achieve consistent rotation of device, TrueType, and vector fonts, an application can use the bitwise OR operator (|) to combine theCLIP_LH_ANGLESvalue with any of the othernClipPrecisionvalues. If theCLIP_LH...
1 /*1 utils.h 2 *# A variety of utility functions. 3 *# 4 *# Some of the functions are duplicates of well known C functions that are not 5 *# standard. 6 *2 License 7 *[ 8 *# Author: Werner Stoop 9 *# This software is provided under the terms of the unlicense. ...
After some web search, you find the C-algorithms library [CAlg] and decide to use its double ended queue implementation. To make the handling easier, however, you decide to wrap it in a Python extension type that can encapsulate all memory management. ...
Functions encapsulate a set of operations that generally form a single task, such as print(). (The empty parentheses following a name indicate that it represents a function.) The notions of program scope and lifetime of variables, together with a discussion of the namespace facility, are the...
若要使用嵌入式只读的字体,应用程序必须指定 CLIP_ENCAPSULATE。 为了实现设备的一致的旋转,TrueType字体和矢量,应用程序可以使用合并 CLIP_LH_ANGLES 值的或运算符与任何其他 nClipPrecision 值。 如果 CLIP_LH_ANGLES 位设置,所有字体的旋转取决于坐标系统的orientation是否在左侧或右侧使用的。 (针对坐标系的orientatio...