newline

问题 I'm writing a program where I have to accept commands from the user like a shell where the user can set values for environment variables. The problem I'm having is if the user types set var var-value I need to know the user typed a space instead of just set and pressed enter which is a different command. How can I determine if the user pressed space or enter using scanf() ? 回答1: You'll know the user pressed enter because scanf() won't return until the user does so. If you're trying to read

问题 I'm writing a program where I have to accept commands from the user like a shell where the user can set values for environment variables. The problem I'm having is if the user types set var var-value I need to know the user typed a space instead of just set and pressed enter which is a different command. How can I determine if the user pressed space or enter using scanf() ? 回答1: You'll know the user pressed enter because scanf() won't return until the user does so. If you're trying to read

问题 How to remove the last "\n" from a textarea? 回答1: verses ="1\n222\n" verses = verses.replace(/\n$/, "") -> returns "1\n222" 回答2: from http://en.wikipedia.org/wiki/Trim_%28programming%29 String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ""); }; That will add a trim function to string variables that will remove whitespace from the beginning and end of a string. With this you can do stuff like: var mystr = "this is my string "; // including newlines mystr = mystr.trim(); 回答3

问题 Is there a way to convert all CRs to CRLFs in a text file? When I open a text file from Linux server on Windows, all text is displayed in one line, but actually it's a multi line one. I'd like to perform the conversion in a batch file. Can anyone advice, please? 回答1: Line separators and line terminators have been a source of compatibility friction between systems as long as there has been more than one kind of system and an urge to exchange data. The Wikipedia article on the Newline has a

问题 I'm trying to execute a Python program on Linux which I first created on Windows, but the following error is shown: metadata = eval(metafile.read()) File "< string >", line 1 @ @ @ @ @ @ Any idea? 回答1: dos2unix yourfile.py python yourfile.py If you don't have dos2unix , here is some python code you can use instead. Just put this in dos2unix.py, and run python dos2unix.py yourfile.py above: import sys filename = sys.argv[1] text = open(filename, 'rb').read().replace('\r\n', '\n') open(filename

问题 It's been awhile since I asked a question! I'm developing an application in Java where JLabels are used. Anyway, as you may or may not be able to see from the picture below, the text that says Category Test gets cut off and ends up saying Categor... instead. Is there any way that I can "break" the text once it fills up the width of the label? Here is the image: What I did I used a JTextPane like so: JTextPane text = new JTextPane(); SimpleAttributeSet attr = new SimpleAttributeSet();

问题 This question already has answers here : How to read a single char from the console in Java (as the user types it)? (5 answers) Read current console input before Enter (1 answer) Closed 10 days ago . This is in a Java command line application. I am working on an application that will be constantly receiving data and then printing it. I also need to accept commands to send out the port. Every time I type something it gets moved up a line when the console outputs. Ideally I could have a prompt

问题 For clarity: This is NOT a duplicate of Getting std :: ifstream to handle LF, CR, and CRLF? This IS an extension of C++ cutting off character(s) when read lines from file I state this up front because when I posted the question at C++ cutting off character(s) when read lines from file it was tagged as a potential duplicate of Getting std :: ifstream to handle LF, CR, and CRLF?. I tried a simplified version (direct read instead of buffers to keep it simple) of the proposed solution at the

问题 Q: I wanna to know the syntax of SQL query of inserting new line in my table. I mean ,I wanna to enter the following in my table abc : aaaaaaaaaa bbbbbbbbbb cccccccccccc Maintaining the new line.through INSERT command . Thanks in advance 回答1: When I answered this question, you'd got it tagged with SQL Server 2008. You've since edited it to be about Informix. The following works for SQL Server 2008. INSERT INTO MyTable(MyField) VALUES('AAAAA' + CHAR(13) + CHAR(10) + 'BBBBB') Informix looks

问题 Is there an R equivalent for Environment.NewLine in .NET? I'm looking for a character object that would represent a new line based on the environment, e.g. CR LF ("\r\n") on Windows and LF ("\n") on Unix. I couldn't find any such thing in the R documentation, or the default R options. 回答1: There’s no equivalent, but most of the time you won’t need it: as long as you’re writing to a text connection, the operating system will do the correct thing and treat '\n' according to the platform’s