output

问题 I read into myArray (native Swift) from a file containing a few thousand lines of plain text.. myData = String.stringWithContentsOfFile(myPath, encoding: NSUTF8StringEncoding, error: nil) var myArray = myData.componentsSeparatedByString("\n") I change some of the text in myArray (no point pasting any of this code). Now I want to write the updated contents of myArray to a new file. I've tried this .. let myArray2 = myArray as NSArray myArray2.writeToFile(myPath, atomically: false) but the file

问题 I read into myArray (native Swift) from a file containing a few thousand lines of plain text.. myData = String.stringWithContentsOfFile(myPath, encoding: NSUTF8StringEncoding, error: nil) var myArray = myData.componentsSeparatedByString("\n") I change some of the text in myArray (no point pasting any of this code). Now I want to write the updated contents of myArray to a new file. I've tried this .. let myArray2 = myArray as NSArray myArray2.writeToFile(myPath, atomically: false) but the file

问题 I'm writing a code to analyze PDF file. I want to display the output on the console as well as to have a copy of the output in a file, I used this code save the output in a file: import sys sys.stdout = open('C:\\users\\Suleiman JK\\Desktop\\file.txt',"w") print "test" but could I display the output into console as well but without using classes because I'm not good with them? 回答1: You could make a function which prints both to console and to file. You can either do it by switching stdout, e

问题 I have the following problem. I use a form when I provide only PIN. I have validator which checks if its a 4-digit number. Then the action on submit is set to the method which checks if the PIN exists in the database. If not it does message = "no PIN"; I used the message in the output label below the form. Previously it was null so there was no message there. Now it changes into "no PIN" but I have to clear it after clicking the submit button again because the error message doesn't disappear

问题 I tried going beyond just guessing random numbers. Basically, the program should be made to show like this : insert a number : 70 bigger than 0 smaller than 70. insert a number : 35 bigger than 35 smaller than 70. insert a number : 55 bigger than 55 smaller than 70. insert a number : 60 bigger than 55 smaller than 60. insert a number : 57 You got it right on your 5th try! I had some problems, but already through brilliant people in stackoverflow, I am able to get all the results I wish, but

问题 This question already has an answer here : using scanf(“%d ”) with a space after the %d (1 answer) Closed 2 years ago . #include<stdio.h> int main() { int a,b; printf("Enter values of a and b\n"); scanf(" %d%d ",&a,&b); printf("a=%d b=%d", a, b); return 0 ; } Here if I use scanf(), as in my code then the compiler expects the user to enter three values, I am unable to understand this , when i use scanf() without any white space then it asks for only two inputs as expected , so i am confused

问题 Im a beginner learning The C Programming language and using Microsoft visual C++ to write and test code. Below program in C from text(section 1.5.1) copy its input to its output through putchar() and getchar(): #include <stdio.h> int main(void) { int c; while ((c = getchar()) != EOF) putchar(c); return 0;} The program print characters entered by keyboard every time pressing ENTER.As a result,I can only enter one line before printing. I can't find a way to enter multi-line text by keyboard

问题 Thanks. But the account and password are needed. So I must send them and then send ovs-vsctl command. the scripts are something like this: spawn telnet@ip expect -re "*login*" { send "root" } expect -re "password*" { send "****" } send "ovs-vsctl *******" I want to store the output of this command send "ovs-vsctl ****" , but many times I got some output of the command "send "password"", how can I get the output of send "ovs-vsctl****" . The output of the command send "ovs-vsctl *** are two

问题 My Problem I just started using the R library 'choicemodelr' and succeded in getting some beta values as a solution. But I wonder how do I assign these values to the specific attribute-levels. As a result I only get values for A1B1, A1B2, A1B3,... etc. How does this generic output generally connect to my Design? Didn't find a hint in the documentation. Neither for the choicemodelr libraray, nor the bayesm library (rhierMnlRwMixture) to which it is connected to. I hope you can help me with

问题 I'm trying to output a Matrix: M = [1 20 3; 22 3 24; 100 150 2]; Using: for i=1:3 fprintf('%f\t%f\t%f\n', M(i), M(i+length(M)), M(i+length(M)*2)); end And the output is turning out something like: 1 20 3 22 3 24 100 150 2 Which is obviously not great. How can I get it so the front of integers are padded with spaces? Like so: 1 20 3 22 3 24 100 150 2 Any ideas? Thanks! 回答1: You can use string formatting to allocate specific number of characters per displayed number. For example fprintf('% 5d\n