# Server Side Kotlin-05

### Introduction:-   
In the last post of this series, I discussed the Kotlin Collection 
 Map API. In this post, I wil share how zip APIs work.     

Zipping transformation(zip() extension function) is used to  build pairs from different collection with element of same positions .
It is also applicable to array with another collection or array with another array. zip() returns the List of pair objects.

  
```
val lang = listOf("java", "c#", "python","javascript")

val frameworks = listOf("spring", "aspnetcore", "django", "nodejs")
println( lang zip frameworks)

   
```` 
output  
```   [(java, spring), (c#, aspnetcore), (python, django), (javascript, nodejs)]```   

### Conclusion;-   
 You can see how this zip works. In the next post, I will explore the Associate APIs.