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Ruby 2021-10-17 03:28:12
rails get source method
class A def foo end end file, line = A.instance_method(:foo).source_location # or file, line = A.new.method(:foo).source_location puts "Method foo is defined in #{file}, line #{line}" # => "Method foo is defined in temp.rb, line 2&q... Add solution -
Java 2021-10-16 19:39:04
working with buttons in applet java
import java.applet.*; import java.awt.*; import java.awt.event.*; public class AnAppletWithButtons extends Applet implements ActionListener { public void init() { button1 = new Button("Button 1"); add(button1); button1.addActionListener(... Add solution -
Swift 2021-10-16 19:00:20
flutter create custom appbar
// ./components/appBar.dart import 'package:flutter/material.dart'; class CustomAppBar extends StatelessWidget with PreferredSizeWidget { final String _title; @override final Size preferredSize; CustomAppBar(this._title, { Key key}) : preferred... Add solution -
Java 2021-10-16 18:09:07
threadsafe singleton pattern in java
package com.journaldev.designpatterns; public class ASingleton { private static volatile ASingleton instance; private static Object mutex = new Object(); private ASingleton() { } public static ASingleton getInstance() { ASingleton result = inst... Add solution -
Other 2021-10-16 10:44:07
what is constractor
Constructors are the special methods without any return type. Constructors have the same name with the className Constructors are special methods, which are called whenever the new keyword is used to create an object of a class By default every class al... Add solution -
Other 2021-10-16 08:44:06
unity letters apears slowly
using UnityEngine; using System.Collections; public class AutoType : MonoBehaviour { public float letterPause = 0.2f; public AudioClip sound; string message; // Use this for initialization void Start () { message = guiTe... Add solution -
CSS 2021-10-15 17:31:06
how to get element details using cssselector using beautifulsoup
soup.select('div') All elements named <div> soup.select('#author') The element with an id attribute of author soup.select('.notice') All elements that use a CSS class attribute named notice soup.select('div span') All elements named <span> ... Add solution
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