Enumerable # zip implementation

In the morning, I saw "geff Zhang" Introducing enumerable # zip, so I had nothing to do with it.

Let's not talk about the idea. I read brother Zhang's test.CodeFirst, write a simple structure:

  Public static   ienumerable   
   
     zip 
    
      (
    
     This   ienumerable   
   
     first, 
     ienumerable   
   
     sencond, 
     func   
   
     func) {}
    

With the structure, the implementation is much simpler. In this article, Dr. Zhang introduced that "the method merges each element in the first sequence with the element with the same index in the second sequence. If the sequence does not have the same number of elements, the method merges the sequence until it reaches the end of one of them. For example, if a sequence has three elements and the other sequence has four elements, the result sequence has only three elements ."

To read each element of the two sequences and execute func based on the elements of the same index, it seems a little troublesome to use foreach, for, and so on. For simplicity, it is directly converted into ienumerator.

After reading the code, you will understand:

 Public static  Ienumerable  <Tresult> zip <tfirst, tsencond, tresult> (  This  Ienumerable  <Tfirst> first,  Ienumerable <Tsencond> sencond,  Func  <Tfirst, tsencond, tresult> func ){  VaR  Firsttor = first. getenumerator ();  VaR  Sencondtor = sencond. getenumerator ();  While  (Firsttor. movenext ()){  If (Sencondtor. movenext ()){  Yield return  Func (firsttor. Current, sencondtor. Current );}}} 

I did not care about performance when I wrote it casually. I will discuss it with you.

Attached test code:

 Int  [] Numberic =  New int  [] {  1  ,  2 ,  3  ,  4  };  String  [] Words =  New String  [] {  ""  ,  "B"  , "C"  ,  "D"  };  Int  [] Numbericdiff =  New int  [] {  1  ,  2  ,  3 };  VaR  Result = numberic. Zip (words, (a, B) => A +  ""  + B );  Foreach  (  VaR  R  In  Result ){  Console . Writeline (r);} result = numbericdiff. Zip (words, (a, B) => A +  ""  + B );  Foreach  (  VaR  R  In  Result ){  Console  . Writeline (r );} 

Result:

 

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