Generics

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Geniric helps to reuse the methods which avoid overloading methods that will become hard to maintain

Public Class Equalizer

{

    public bool compare (string s1, string s2)

     {return s1 == s2;}

    public bool compare (int i1, int i2)

    {return i1 == i2;}

}

If we have a need to add a cross cutting aspect to all compare method like logging, how would current design accomodate the need

Public Class EqualizerWithLogging

{

    public bool compare (string s1, string s2)

     {

        iLoogger.log(XXXX);

       return s1 == s2;

     }

    public bool compare (int i1, int i2)

    {

       iLoogger.log(XXXX);

return i1 == i2;}

}

View Code

By simply resort this to generic class can resolve this issue

Public Class EqualizerWithLogging <T>
{
    public bool compare (T s1, T s2)
     {        iLoogger.log(XXXX);
       return s1 == s2;
     }
}

Generics

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原文地址：http://www.cnblogs.com/Mattcoder/p/6744093.html