file-io

问题 Using Stata14 on windows, I am wondering how to build customized tables from several regression results. Here is an example. We have reg y, x1 predict resid1, residuals summarize resid1 Which gives: Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- resid1 | 5,708,529 4.83e-11 .7039736 -3.057633 3.256382 And run another regrerssion and similarly obtain the residuals: reg y, x2 predict resid2, residuals I would like to create a table

问题 I have a webservice WCF which log requests at the end of the process : public void xxxxx(string sXmlIn, out string sXmlOut) { [...] // log log.PrintDatas = bPrintDatas; log.sXmlIn = sXmlIn; log.sXmlOut = sXmlOut; log.error = error; log.toFile(); } Here is my Log class : public class LogFile { public String sXmlIn; public String sXmlOut; public Error error; private bool bPrintDatas; public bool PrintDatas { set { bPrintDatas = value; } } private bool bInitWs; public bool InitWs { get { return

问题 I am using Apache PDFBox & POIFSFilesystem which extract text from the pdfs and export into excel but my application is throwing below error ever after adding the apache-log4j-2.8.2-bin jar files.I tried to add org/slf4j/Logger jar files but its still throwing error. may be i could not find exact files..! pls suggest. Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/Logger at org.apache.logging.slf4j.SLF4JLoggerContext.getLogger(SLF4JLoggerContext.java:39) at org.apache

问题 I am working on a program that is to use read(), write(), open(), and close() to deal with files. We are given a binary file of records to sort. My confusion starts at the read step. From my understanding, read puts the file contents into a character array. So if I'm not totally off, it means each index contains a single byte of information. The records are each seperate by a space. I am to sort them by the first four bytes each contains. I know the format of the records but data has a

问题 I am modifying a parser I've inherited which currently only reads from FILE* via read. It now has the requirement of being able to pull data from char* constants as well so inline text inside C strings can be parsed. I've looked at providing a simple interface to both in the form of "readers" so you can provide a file reader and a char reader from which the parser can grab characters. For example: // Inputs const char *str = "stringToParse"; FILE *f = fopen(...); // Creating a reader. Each

问题 I understand that there are tons of questions on this site regarding the creation of a batch file that goes through the file in a specified folder and deletes them if it satisfies the condition stated. However, I would like to tweak that a little bit. In my batch file, I would like to look at a folder, say C:\Dev and get all the files that are within the same month. After getting all those files, I want to sort through all the dates and delete everything except for the latest one. So if I

问题 I am trying to create a Directory in .NET using Directory.CreateDirectory , I followed the directions here to give access permission but I am still getting an UnauthorizedAccessException. Does anyone have any advice? Note, this is a web application that uses the IIS7 server. 回答1: In the directory you are attempting to create a new directory, make sure that your app pool user has Read/Write permissions for that directory. You have to specifically do that in addition to adding the user to the

问题 Unhandled exception at 0x102e1cee (msvcr100d.dll) in filename.exe 0xC0000005: Access violation writing location 0x00416858 on. The debugging points to line: if (_putc_nolock(ch, f) == EOF) of code #else /* _UNICODE */ if (_putc_nolock(ch, f) == EOF) #endif /* _UNICODE */ *pnumwritten = -1; else ++(*pnumwritten); } in output.c which I believe is linked in visual studio library. I did not link it. My code is: body="" myFile=CreateFile("Sample.txt",FILE_APPEND_DATA,FILE_SHARE_WRITE,0,OPEN

问题 I am trying to read from stdin using select , after that I am sending the data through a socket to a server. The following snippet is supposed to follow the above logic; but it doesn't read anything from stdin . Moreover it prints Enter command: after the first time the user inputs a string. The line printf("%d %s\n",__LINE__ ,buf); doesn't print anything as either. fd_set rfds; struct timeval tv; int retval; char buf[BUFLEN]; while(1) { FD_ZERO(&rfds); FD_SET(STDIN_FILENO, &rfds); tv.tv_sec

问题 I've searched up and down for the fix to my issue, but none seem to work. One particular reference-- this and this, and especially this. However, no matter how I implement them, I receive an OutOfBoundsError, which I can't understand. The program is extra credit for a class. In truth, it is very simple-- Program Description: Use a two dimensional array to solve the following problem. A company has four sales persons (1 to 4) who sell five different products (1 to 5). Once a day, each