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Tag Archive for clojure

What’s so great about Clojure? [closed]

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Accessing the history of a `ref` in Clojure

The documentation for ref shows a :max-history option and states that “refs accumulate history dynamically as needed to deal with read demands.” I can see that there is history at the REPL, but I don’t see how to find previous values of a ref:

Byte code weaving vs Lisp macros

I have been reading about the libraries people have written for languages like Java and C# that make use of byte code weaving to do things like intercept function calls, insert logging code, etc. I have also been reading up on Lisp/Clojure macros in an attempt to better understand how to utilize them. The more I read about macros, the more it seems like they provide the same kind of functionality as byte code weaving libraries. By functionality, I mean the ability to manipulate code at compile time.

clojure/erlang/go for high volume server

I have a project that will need to handle 1000s of requests a second with a decent amount of processing for each. For the most part, the processing will be done on a list of items, basically filtering it and returning a smaller list. This process can be done in parallel fairly easily and I should also say, speed is important. I’ve narrowed my language of choice for the project down to clojure, erlang, and go, and have researched them all to a moderate degree.