Designing DSLs is cheap and easy if you have a proper metaprogramming. It is as simple as picking up a number of language features from your toolbox and mixing

Designing DSLs is cheap and easy if you have a proper metaprogramming. It is as simple as picking up a number of language features from your toolbox and mixing them together in a simple, declarative way. Maintaining DSLs is also much, much easier than maintaining essentially the same thing, but mutilated and spread in thousands lines of application code, mixed with a number of lower and higher levels of abstraction. > now it's a tool I only reach for if there's a clear need for it. There is almost always a need for a DSL. Pretty much any problem is better solved with a DSL, as long as it's something more complex than a "Hello, world".