input

问题 I know I must be missing something very simple but why is there no onChange for <Input> tag of Ant design ? I would like the update the value of an input. I assumed there was something like an onChange , since I was able to use onChange with DatePicker and handleChange DropDown ; but I guess I assumed wrong When I looked at the docs, there is a onPressEnter callback, but that is not really going to help me. I tried the following: <Input placeholder="Flight name" size="large" value={this.state

问题 I'm not sure if this is possible but i'm open to ideas. I have a c++ function. It does some calculation to arrays that are being defined by users as inputs and will generate two output values. Let's call it "myfunction" and it looks something like this: void myfunction(double array1[18],double array[9],double array [2],double *output1, double *output2) I want to make this function more generic so that it is able to take in arrays of different size. Meaning, I want users of this function to be

问题 I have 2 functions fun1 and fun2 which take as inputs a string and a number respectively. The also both get as input the same variable a . This is the code: a = ['A','X','R','N','L'] def fun1(string,vect): out = [] for letter in vect: out. append(string+letter) return out def fun2(number,vect): out = [] for letter in vect: out.append(str(number)+letter) return out x = fun1('Hello ',a) y = fun2(2,a) The functions perform some nonsense operations. My goal would be to rewrite the code in such a

问题 I'm studying Python and a few weeks ago I had created a game which the user needs to guess the number between an interval defined by the user himself. Now that I'm learning about Unittest, I decided to write a test module for the game. However, as it takes 4 inputs from the user (two of them defines the range which the random number will be generated, one is the user's guess and the last is an Y/N question for the user to decide whether or not he wants to continue. import random def main():

问题 In my CSS I need an color based on user picked color. The color picked is used with a fixed transparency of 80%. The following form element will let the user choose a color easily. <input type=color value=#00ffff> // #00ffff But how can I add transparency to it in CSS? rgba(#00ffff,.8) // doesn't work Update : I specifically asked how to do it in CSS, not in JS. BTW it's for a PHP driven CMS. I don't wanna force JS on users, and I prefer not to write conversion functions in PHP. Probably I

问题 I want the default value to be 0 and recolor the input if it's more than 0, using :valid . Am I doing something wrong? Is Google Chrome wrong? Or the HTML5 specification? I want to solve this without JS. :valid { background: green } <p>This should not be green, but it is:</p> <input max="100" min="0" pattern="^[1-9]\d*$" type="number" value="0" /> <p>Works perfectly, if the type is changed to text:</p> <input pattern="^[1-9]\d*$" type="text" value="0" /> 回答1: Citing MDN on the pattern

问题 I've done some tutorials and can get some things to print when I press a button but I cannot figure out how to store a value that is inserted into an input widget buy the user into a variable for me to use. I'm new to C++ and FLTK so I'm not sure if there's a simple thing like a Java Scanner to use. I'm assuming you would use something like var=input-value(); but I don't know how to use it within the callbacks since they only take certain parameters. Such as: Fl_Button *butts[2]; static void

问题 I am working through a problem in the C ansi programming book. I am asking the user for input until there is no end of line. However, i'd like to have the characters moved to the next line once 10 characters have been reached. However, the newline character only works after hitting enter. Shouldn't a new line be outputted once i == 10? #include <stdio.h> #define MAXLINE 10 // count number of chars, once it reaches certain amount int main() { int i,c; for (i=0;(c=getchar()) != EOF; i++) { if

问题 I'm writing a CLI using node and I've arrived at the part where I take user input and append it to a string that is the command for the child_process.exec function. const CURL_CHILD = exec('npm view --json ' + process.argv[2] + ... I am trying to figure out what I need to do to process.argv[2] before I pass it to the exec function. I've surfed around for a while and haven't found any questions or answers that address this specific case. What is the best way to sanitize this user input for

问题 for (;;) { cout << "You are playing for:" << playtime << "seconds." << endl; cout << "You have " << bytes << " bytes." << endl; cout << "You are compiling " << bps << " bytes per second." << endl; cout << "Press a to buy assembler monkey (produces 1 byte per second)/(cost 10 bytes)" << endl; switch(getch()) { case 'a': bytes = bytes - 10; bps++; break; } bytes = bytes + bps; playtime++; Sleep(1000); system("cls"); } Let's say that's my incremental game. I want refresh my game after 1 second.