It's been the other way round for me. I always felt Ruby was doing too
much under the hood. So much so that I bought "Ruby Under A Microscope"
just to find out what was going on. I found it very easy to switch to
Clojure because everything is so much more transparent. Now Ruby just
feels awkward though I still need to use it due to its mindshare in the
web development domain.
gvim
On 14/01/2014 19:18, Mark wrote:
I have felt your pain. I started life with Smalltalk and more or less
spent the last 15 years in Java. When I started Clojure, it was very
hard to break my thinking habits. Particularly, I was lost without
manifest typing. I didn't realize how much types documented my system
and allowed very lazy thinking on my part. I had less trouble with
immutability as I had developed the habit of coding immutable objects in
Java.
I started dabbling in Clojure about a year ago and started coding a
serious project about 3 months ago. Only recently have I gotten used to
thinking about mapping functions over data as opposed to looping through
a collection although I still find myself coding loop/recur and then
realizing I could use map. I've also developed very different work
habits due to the REPL.
In my own case, the particular changes in my thinking that have really
aided me are:
1. Being able to visualize the data structure that a function is
operating on
2. I find that my code falls into two categories: computing new data
or transforming data structures
3. Never try to compute new data and transform data at the same time
4. Much of the time computing new data is either map or reduce.
Understanding these two (especially the flexibility of reduce) is huge
5. 80% of the time that I want to transform data, postwalk is the answer
I'm sure that as I get to know the Clojure libraries better, the
specifics around #4 and #5 will change but I bet the first three are
pretty constant.
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