tostring

ToString的设计目的：为对象提供一个字符串，该字符串描述当前对象的信息。 1、Object的ToString 返回当前对象所属类型的全名，这个意义不大，但是设计很合理，因为有些对象没法返回一个有意义的字符串说明，比如FileStream或者HashTable。 2、Object 是所有类的根，所有类都直接或者间接继承Object。这些类大部分都重写了ToString方法。特别是值类型，比如int，double，值类型重写ToString，将实例的数值转换为等效的字符串。 转载于:https://www.cnblogs.com/nzbbody/archive/2012/01/10/2318030.html 来源： https://blog.csdn.net/weixin_30535913/article/details/99234356

This question already has an answer here: C#: Printing all properties of an object [duplicate] 9 answers Imagine a class with many public properties. For some reason, it is impossible to refactor this class into smaller subclasses. I'd like to add a ToString override that returns something along the lines of: Property 1: Value of property 1\n Property 2: Value of property 2\n ... Is there a way to do this? I think you can use a little reflection here. Take a look at Type.GetProperties() . private PropertyInfo[] _PropertyInfos = null; public override string ToString() { if(_PropertyInfos ==

Possible Duplicate: How do I convert a double into a string in C++? I want to combine a string and a double and g++ is throwing this error: main.cpp: In function ‘int main()’: main.cpp:40: error: invalid operands of types ‘const char [2]’ and ‘double’ to binary ‘operator+’ Here is the line of code which it is throwing the error on: storedCorrect[count] = "("+c1+","+c2+")"; storedCorrect[] is a string array, and c1 and c2 are both doubles. Is there a way to convert c1 and c2 to strings to allow my program to compile correctly? You can't do it directly. There are a number of ways to do it: Use a

Is it possible in Java to override a toString for an Objects array? For example, let's say I created a simple class, User (it doesn't really matter which class is it since this is a general question). Is it possible that, once the client creates a User[] array and the client uses System.out.print(array) , it won't print the array's address but instead a customized toString() ? PS: of course I can't just override toString() in my class since it's related to single instances. No. Of course you can create a static method User.toString( User[] ), but it won't be called implicitly. You can use

Is there a library that will recursively dump/print an objects properties? I'm looking for something similar to the console.dir() function in Firebug. I'm aware of the commons-lang ReflectionToStringBuilder but it does not recurse into an object. I.e., if I run the following: public class ToString { public static void main(String [] args) { System.out.println(ReflectionToStringBuilder.toString(new Outer(), ToStringStyle.MULTI_LINE_STYLE)); } private static class Outer { private int intValue = 5; private Inner innerValue = new Inner(); } private static class Inner { private String stringValue =

In Java, I could do BigInteger b = new BigInteger(500); Then format it as I pleased b.toString(2); //binary b.toString(8); //octal b.toString(10); //decimal b.toString(16); //hexadecimal In C#, I can do int num = int.Parse(b.ToString()); Convert.ToString(num,2) //binary Convert.ToString(num,8) //octal etc. But I can only do it with long values and smaller. Is there some method to print a BigInteger with a specified base? I posted this, BigInteger Parse Octal String? , yesterday and received the solution of how to convert basically all strings to BigInteger values, but haven't had success