I am writing my first clojure program, and want to read lines from stdin. When I try this: (doall (map #(println %) (line-seq *in*))) I get this exception: Exception in thread "main" java.lang.ClassCastException: clojure.lang.LineNumberingPushbackReader cannot be cast to java.io.BufferedReader (test.clj:0) I get the same results i...
How would you create a variable that could be read. It would read from a certain file if it exists, otherwise it would read from standard input. Something like: input = File.open("file.txt") || in This doesn't work, but I think this should be done pretty often, but I can't find a nice way to do it. ...
I have a script vbs wich redirect some data to the stdin of myApp (written in C in Windows). If myApp was already launched before myApp finds the PID of the first myApp session and redirects the input received via stdin to the stdin of the first session of myApp which handles the stdin. So when myApp receives a stdin and no other instanc...
stdout is line-buffered when connected to a terminal, but I remember reading somewhere that reading (at least from stdin) will automatically flush stdout. All C implementations that I have used have done this, but I can't find it in the standard now. It does make sense that it works that way, otherwise code like this: printf("Type some...
Would like to be able to take password entry from the stdin console, but, of course, without echoing what the user types. Is there something comparable to getpasswd functionality in Go? (Google's Go language) I tried using syscall.Read, but it echoes what is typed. ...
Do not code like this. Please, read the hints by the accepted answer. I tried to remove the junk but I coundn't. Code import sys a = [] i=0 for line in sys.stdin: try: n = float(line) a.append(n) i+=1 except ValueError: print 'Number please!'; ...
Hi all, A situation I have under Windows XP (SP3) has been driving me nuts, and I'm reaching the end of my tether, so maybe someone can provide some inspiration. I have a C++ networking program (non-GUI). This program is built to compile and run under Windows, MacOS/X, and Linux, so it uses select() and non-blocking I/O as the basis f...
I have the following python script that reads numbers and outputs an error if the input is not a number. import fileinput import sys for line in (txt.strip() for txt in fileinput.input()): if not line.isdigit(): sys.stderr.write("ERROR: not a number: %s\n" % line) If I get the input from stdin, I have to press Ctrl+D twice...
How to flush the stdin?? Why is it not working in the following code snippet? #include <string.h> #include <stdio.h> #include <malloc.h> #include <fcntl.h> int main() { int i=0,j=0, sat; char arg[256]; char * argq; argq = malloc(sizeof(char)*10); printf("Input the line\n"); i=read(0, a...
I need to read an input file like : 1 19 20 41 23 2 41 52 43 3 90 91 941 4 512 5 6 51 61 each odd line is an integer each even line is unknown number of integers it is very easy in C++ while( cin >> k ){ ............ } Im not so used to C language so I couldnt make it in C. any ways to do it? ...
Please check the following code #include <stdio.h> #include <string.h> #include <stdlib.h> #include <termios.h> #include <unistd.h> #include <sys/types.h> #include <signal.h> #include <sys/time.h> #include <time.h> #define CLOCKID CLOCK_REALTIME #define SIG SIGRTMIN int reset = 0; void changemode(int); int kbhit(void); int pfds[2]; s...
How would I go about reading a string from stdin and formatting as such to stdout? For example: If I receive someone's name: John Doe 03 17 I want to create user name for him as such: jd0317 Although it can change to for someone with a middle name: Jane B. Doe 05 18 Then it would be: jbd0518 I assume you would read the line and then...
Hi, I have a CLI script and want him to read data from a file. It should be able to read it in two ways : cat data.txt | ./my_script.py ./my_script.py data.txt A bit like grep, for example. What I know: sys.argv and optparse let me read any args and options easily. sys.stdin let me read data piped in fileinput make the full proce...
I have the following simple code: import java.io.*; class IO { public static void main(String[] args) { BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in)); String userInput; while ((userInput = stdIn.readLine()) != null) { System.out.println(userInput); } ...
I'm using Python's subprocess.Popen to perform some FTP using the binary client of the host operating system. I can't use ftplib or any other library for various reasons. The behavior of the binary seems to change if I attach a stdin handler to the Popen instance. For example, using XP's ftp client, which accepts a text file of commands...
I am trying to write a PHP script that uses the pdftk app to merge an XFDF with a PDF form and output the merged PDF to the user. According to the pdftk documentation, I can pass the form data in via stdin and have the PDF output to the stdout stream. The normal, file-not-stream way to use pdftk from the command line is: pdftk blankform...
Hello! In my sms-script I read in the text to send with this subroutine: my $input = input( "Enter the input: " ); sub input { my $arg = shift; print $arg if $arg; print "\n "; chomp( my $in = <> ); return $in; } This way I can correct errors only through canceling all until I reach the error and this only in the ...
In the D language how I can read all standard input and assign it to a string (with Tango library) ? ...
Are there any stdin input length limitations (in amount of input or input speed)? ...
As in, can I pass cin to any function that accepts an ifstream object? ...