text-files

问题 Why should we distinguish between text file and binary files when transmitting them? Why there are some channels designed only for textual data? At the bottom level, they are all bits. 回答1: At the bottom level, they are all bits... true. However, some transmission channels have seven bits per byte, and other transmission channels have eight bits per byte. If you transmit ASCII text over a seven-bit channel, then all is fine. Binary data gets mangled. Additionally, different systems use

问题 Here is my code: Get-Content 'hist4.txt' | ForEach-Object { $_.split(" ")[0]} | ForEach-Object { $rgbArray += $_ for( $i = 1; $i -le $rgbArray.length; $i++ ) { $rgbA0=$rgbArray[$i] $rgbA1=$rgbArray[$i + 1] //compare A0 and A1... } } The text file contents: 1 500 21 456 33 789 40 653 54 900 63 1000 101 1203 I want to load the text file. Get-Content 'hist4.txt' It has two elements on each line. I need the first element. ForEach-Object { $_.split(" ")[0]} I need to store the first element of

问题 Here is my code: Get-Content 'hist4.txt' | ForEach-Object { $_.split(" ")[0]} | ForEach-Object { $rgbArray += $_ for( $i = 1; $i -le $rgbArray.length; $i++ ) { $rgbA0=$rgbArray[$i] $rgbA1=$rgbArray[$i + 1] //compare A0 and A1... } } The text file contents: 1 500 21 456 33 789 40 653 54 900 63 1000 101 1203 I want to load the text file. Get-Content 'hist4.txt' It has two elements on each line. I need the first element. ForEach-Object { $_.split(" ")[0]} I need to store the first element of

问题 At the moment I am working with this code: from bs4 import BeautifulSoup import glob import os import re import contextlib @contextlib.contextmanager def stdout2file(fname): import sys f = open(fname, 'w') sys.stdout = f yield sys.stdout = sys.__stdout__ f.close() def trade_spider(): os.chdir(r"C:\Users\6930p\FLO'S DATEIEN\Master FAU\Sommersemester 2016\02_Masterarbeit\04_Testumgebung\01_Probedateien für Analyseaspekt\Independent Auditors Report") with stdout2file("output.txt"): for file in

问题 I really didn't find a satisfied answer at google and I/O in C++ is a little bit tricky. I would like to read text file by blocks into a vector if possible. Alas, I couldn't figure out how. I am not even sure, if my infinite loop will be break in all possibilities, because I/O is tricky. So, the best way I was able to figure out is this: char buffer[1025]; //let's say read by 1024 char block buffer[1024] = '\0'; std::fstream fin("index.xml"); if (!fin) { std::cerr << "Unable to open file"; }

问题 I have hundreds of files where I need to change a portion of its text. For example, I want to replace every instance of "http://" with "rtmp://" . The files have the .txt extention and are spread across several folders and subfolder. I basically am looking for a way/script that goes trough every single folder/subfolder and every single file and if it finds inside that file the occurrence of "http" to replace it with "rtmp". 回答1: You can do this with a combination of find and sed : find .

问题 This is a follow-up questions on a previous one. Consider this code, which is less toyish than the one in the previous question (but still much simpler than my real one) import sys data=[] for line in open(sys.argv[1]): data.append(line[-1]) print data[-1] Now, I was expecting a longer run time (my benchmark file is 65150224 lines long), possibly much longer. This was not the case, it runs in ~ 2 minutes on the same hw as before! Is it data.append() very lightweight? I don't believe so, thus

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago . I have several data files that look like this: HR0 012312010 001230202 HR1 012031020 012320102 012323222 012321010 HR2 321020202 ... To explain: there is a line that defines the field (HR"n"), a variable number of lines with quaternary numbers (321020202) and then an extra newline between two

问题 This is my code for opening files: Dim filename As String = String.Empty Dim TextLine As String = "" Dim SplitLine() As String Dim ofd1 As New OpenFileDialog() ofd1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*" ofd1.FilterIndex = 2 ofd1.RestoreDirectory = True ofd1.Title = "Open Text File" 'get the filename of the txt file If ofd1.ShowDialog() = DialogResult.OK Then filename = ofd1.FileName End If 'if the filename is existing If System.IO.File.Exists(filename) = True Then Dim

问题 I have a big text file and it contains 3 tables. The records in the file are unsorted, the records in the file are in line with the column name separated by space. The tables are repeating themselves until the end. I want to import the data from that notepad file under correct table into SAS. I want to read the records and column names from the text file and put them under correct table In SAS. I tried through INFILE and I was successful in importing the data into SAS, but since Columns are