/docs/50/70.md

 1# Field Alias
 2
 3Sometimes a subset's field can be used so frequently, that it makes
 4sense to create a field alias. The idea is to avoid repetiting code
 5like
 6
 7```scala
 8val query = subset.where{_.field === 10}
 9```
10
11and instead write
12
13```scala
14val alias = field.in(subset)
15val query = alias === 10
16```
17
18* * *