delimiter

问题 I'm currently trying to split an array of chars that is assigned from reading in from a text file. right now I'm having troubles with delimiters and I don't know if I can have multiple. what I want to delimit is commas and spaces. Here is my code so far. #include <stdio.h> FILE * fPointer; fPointer = fopen("file name", "r"); char singleLine[1500]; char delimit[] = int i = 0; int j = 0; int k = 0; while(!feof(fPointer)){ //the i counter is for the first line in the text file which I want to

问题 I have a space delimited file and some columns are blank, so we end up having multiple spaces, and fread fails with error. But read.table works fine. See example: library(data.table) # R version 3.4.2 (2017-09-28) # data.table_1.10.4-3 fread("A B C D 1 2 3 4 5 6 7", sep = " ", header = TRUE) Error in fread("A B C D\n1 2 3\n4 5 6 7") : Expected sep (' ') but new line, EOF (or other non printing character) ends field 2 when detecting types from point 0: 1 2 3 read.table(text ="A B C D 1 2 3 4 5

问题 I have several delimiters. For example {del1, del2, del3 }. Suppose I have text : Text1 del1 text2 del2 text3 del3 I want to split string in such way: Text1 del1 text2 del2 text3 del3 I need to get array of strings, when every element of array is texti deli. How can I do this in C# ? 回答1: String.Split allows multiple split-delimeters. I don't know if that fits your question though. Example : String text = "Test;Test1:Test2#Test3"; var split = text.Split(';', ':', '#'); //split contains an

问题 What is the fastest method to concatenate multiple files column wise (within Python)? Assume that I have two files with 1,000,000,000 lines and ~200 UTF8 characters per line. Method 1: Cheating with paste I could concatenate the two files under a linux system by using paste in shell and I could cheat using os.system , i.e.: def concat_files_cheat(file_path, file1, file2, output_path, output): file1 = os.path.join(file_path, file1) file2 = os.path.join(file_path, file2) output = os.path.join

问题 This question already has answers here : Printing lists with commas C++ (28 answers) Closed 3 months ago . So i'm trying to do something like this: input: hi my name is clara expected output: hi, my, name, is, clara My program looks like this: #include <iostream> #include <sstream> #include <string> using namespace std; int main() { string str; getline(cin, str); istringstream ss(str); do { string word; ss >> word; cout << word << ", "; } while (ss); } But the output looks like this hi, my,

问题 I am interested in saving the result of a SQL query, like a SELECT statement, as a pipe ( | ) delimited text file in SSMS. I can do that using the Export wizard . However, it seems there's a simpler method by setting a "Custom delimiter" in Tools>Options under Query Results>SQL Server>Results to Text as shown here: Then, if I specify "Results to Text" or "Results to File" , I am supposed to get the pipe delimited result. This is also outlined here:Obtaining Pipe Delimited Results from SQL

问题 I'm trying to move several similar files into folders based on the filename. The code below works fine but does not work if the base name is more than 5 characters, then it says the directory already exists, and moves the files to the shorter named folder. The idea is to make folders based on a text file, and move it together with pictures wich start with the same name (up to an "_" to that same folder, while the filenames remain intact. The picture names are longer though with varying

问题 I use ADODB.Connection and ADODB.Recordset to get data from csv files. The problem I am facing is that the delimiter seems not to work in case of semicolon (or other than comma). I am working with a semicolon as a delimiter. This is my code: Public Function getDataFromFile(path As String, filename As String) As ADODB.Recordset Dim cN As ADODB.Connection Dim RS As ADODB.Recordset Set cN = New ADODB.Connection Set RS = New ADODB.Recordset cN.Open ("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=

问题 I would like to exclude all profiles starting with _ without having to list each profile in an exclusion text file. Is it possible to do this ? @echo off set Target=D:\backup for /f "tokens=*" %%I in ('dir /a:d-h /b "%SystemDrive%\Users\*"') do if exist "%Target%\%%~nXI\" ( ........ ) pause exit Thank you very much in advance for helping ! 回答1: The following code example provides a methodology for retrieving the profile names you require, (those which are not a special account and whose names

问题 I am trying to read a text file in SSIS (2005/2008). I created a connection to the file and placed flat file source, and it works fine in preview but when I try to run I get error saying: [Derived Column [91848]] Error: SSIS Error Code DTS_E_INDUCEDTRANSFORMFAILUREONERROR So I have identified that there are couple of columns with decimal numbers which use period as delimiters. But since I work in Scandinavian environment, the servers expect comma as delimiters. What works is manually changing