Look back on linq
A long time ago, when I touched keywords like map/filter/reduce in Swift.
At that time, I generally called it Syntax Sugar. Today, I got a chance to continue digging into this concept as I am touching LINQ in C#.
Story begins
My learning started from this fun pic:
After some investigation, I got this mapping from Swift to C#:
- map -> Select -> projection -> SELECT (SQL)
- filter -> Where -> selection -> WHERE
- reduce -> Aggregate ->
- Ordering (ORDER BY)?
- Grouping (GROUP BY)?