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伯克利的“信号与系统” The course begins by describing signals as functions, focusing on characterizing the domain and the range. Systems are also described as functions, but now the domain and range are sets of signals. Characterizing these functions is the t
Hardware Video Encoding on iPhone — RTSP Server example On iOS, the only way to use hardware acceleration when encoding video is to use AVAssetWriter, and that means writing the compressed video to file. If you want to stream that video over the net
FileReader testpublic static String fileRead(String filePath){ StringBuilder result = new StringBuilder(); File src = new File(filePath); FileReader fread = null; BufferedReader re = null; try { fread = new FileReader(src); re = new BufferedReader(f
很完美的例子将数据读到excel，也可以读取excel模版再写到另外一个，88页完美example，部分代码 import java.io.*; import org.apache.poi.hssf.usermodel.HSSFWorkbook; public class POISample{ public static void main(String[] args){ HSSFWorkbook workbook = new HSSFWorkbook();//创建一个空白的workbook
After working with a couple of XML projects for the last six months, I am ready to share a class I wrote called XmlHelper which got me through all the complexity of XML and made my life a lot simpler. If you are a XML beginner or have no idea about
his book is intended to take an intermediate Javascr ipt developer and give him the knowledge he needs to create a cross-browser Javascr ipt library, from the ground, up. Due to the challenging issues that are continually encountered when developing
