You can use non-blocking read from stdin: import sys import os import fcntl import time fl = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL) fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, fl | os.O_NONBLOCK) while True: print(“Waiting for user input”) try: stdin = sys.stdin.read() if “\n” in stdin or “\r” in stdin: break except IOError: pass time.sleep(1)
Here is a version with all optional type annotations and error handling which may be useful for beginners like me: use std::io; fn main() { let mut input_text = String::new(); io::stdin() .read_line(&mut input_text) .expect(“failed to read from stdin”); let trimmed = input_text.trim(); match trimmed.parse::<u32>() { Ok(i) => println!(“your integer input: {}”, i), Err(..) => println!(“this … Read more
Your code would become: def Survey(): print(‘1) Blue’) print(‘2) Red’) print(‘3) Yellow’) while True: try: question = int(input(‘Out of these options\(1,2,3), which is your favourite?’)) break except: print(“That’s not a valid option!”) if question == 1: print(‘Nice!’) elif question == 2: print(‘Cool’) elif question == 3: print(‘Awesome!’) else: print(‘That\’s not an option!’) The way this … Read more
Console.Write(“\b \b”); will delete the asterisk character from the screen, but you do not have any code within your else block that removes the previously entered character from your pass string variable. Here’s the relevant working code that should do what you require: var pass = string.Empty; ConsoleKey key; do { var keyInfo = Console.ReadKey(intercept: … Read more
You can use the input() function to prompt the user for input, and float to convert the user input from a string to a float: x1 = float(input(“x1: “)) y1 = float(input(“y1: “)) x2 = float(input(“x2: “)) y2 = float(input(“y2: “)) If you’re using python 2, use raw_input() instead.
Use a global regular expression to replace all commas with an empty string: var str = “12,345,678”; str = str.replace(/,/g, “”); parseInt(str, 10);
EAFP try: x = float(a) except ValueError: print(“You must enter a number”)
Unfortunately, almost no one of the participants ever clearly understands what are they talking about. Literally. Only Kibbee managed to make it straight. This topic is all about sanitization. But the truth is, such a thing like wide-termed “general purpose sanitization” everyone is so eager to talk about is just doesn’t exist. There are a … Read more
HTML Purifier will create standards compliant markup and filter out many possible attacks (such as XSS). For faster cleanups that don’t require XSS filtering, I use the PECL extension Tidy which is a binding for the Tidy HTML utility. If those don’t help you, I suggest you switch to FCKEditor which has this feature built-in.
You could read the entire input line from scanner, then split the line by , then you have a String[], parse each number into int[] with index one to one matching…(assuming valid input and no NumberFormatExceptions) like String line = scanner.nextLine(); String[] numberStrs = line.split(“,”); int[] numbers = new int[numberStrs.length]; for(int i = 0;i < … Read more