Drive out a series! Please correct!
1.6 Unified System Unce (Type System Unification)
C # created a type - unified system type (for this self-prison, my headache is dead. Who has a better name, please tell
I). In summary, all other types, including values, and references can be treated as a unified system type. In concept,
All types are derived from it. In this way, other types of the type of system can be used. Including some "simple
"Type", such as: int. Or give an example: * /
Using system;
Class test
{
Static void main () {
Console.writeline (3.toString ());
}
}
/ * "3. Tostring ()" calls the "toString ()" method of Object. I believe that friends who have learned C / C know that they want to output one.
How much is the number, and now it is. Look at one: * /
Class test
{
Static void main () {
INT i = 123;
Object o = i; // boxing
INT j = (int) o; // unboxing
}
}
/ * In an example of a hat trick, switch from "int" into "Object" and conversion. In this way, at the value and reference
There is a bridge between it. What is the use of this? Improve a common example ... Just MIN. In C / C : * /
// c / c code
Void Min (int I, int J)
{
RETURN ((i } / * If it is not int, or maybe Int, maybe Float, Double? It can be like this: * / Template T min (t i, t j) { Return ((i } / * With C # can: * / Void Swap (Object A, Object B) { RETURN ((i } / * I think everyone must see the second example to compare an int and a float, there is also some conversion, and the third Examples can compare all variables! This flexibility is too big. Therefore, I have thought that everyone must be careful when using it! It will never report an error while comparing an int and a class. Oh, I found that my translation always runs more far, always Can not hosted the original text. Tamper, please forgive!
