Remember that KDB is based on K, which stems from APL, which relies on symbols rather than words for its functions.

Coming from that background, C and especially C# must seem extremely verbose.

For example (from Wikipedia):

In K, finding the prime numbers from 1 to R is done with [0]:

    (!R)@&{&/x!/:2_!x}'!R

And APL[1]:

    (~R∊R∘.×R)/R←1↓ιR

Its truly awesome stuff.

[0]: http://en.wikipedia.org/wiki/K_(programming_language) [1]: http://en.wikipedia.org/wiki/APL_(programming_language)