Rich Hickey's slides from jvm lang summit - worth a read?

[Walter Bright]

bearophile wrote:
> Walter Bright:
> 
>> Executive summary: pure functions and immutable data structures help 
>> manage program complexity.
> 
> At the moment in D there aren't many immutable data structures available, but of course they can be written.
> Such data structures often put the GC under some/high pressure. I don't know if the current D GC is able to cope.

I don't understand your comment. With immutable being transitive, any 
data structure can be made immutable. The GC doesn't care if a data 
structure is immutable or not, I don't see how that affects its operation.