is lost for long time, the warm hearts, kind helps and the passion of programming. Thank you very much.

@luca - fantastic list of the references, try to read some and do some practices ...

@Tomme, you speak out exactly my problem - the conversion from operational point of view to equational one.

It's really the most difficult one. I'm working on combinatorial optimization. For me, the time and the states inherent

in every computation. The variable (mutable one) is the essential spirit of all programs. Like in Tabu Search:

1. Find the best neighbor solution in a set of neighbor solutions

2. Apply the chosen neighbor solution (state change)

3. Put previous solution in Tabu, (state change)

4. Continue 1st Step if not reach the stop criteria (state verification)

above algorithm involves heavily with the changes of the state during the search and

structured control constructors (if, then, while, for.... ). Living on the land of Dijkstra, it really need the enormous

power to change the "state".

2010/12/16 Jun HU <junhufr@gmail.com>

Dear everyone,

My first language is C, and I've strong intention in learning a pure
functional programming language. My very first question is how to
think in the functional programming way, anyone has some ideas.

Really appreciate....

Regards,

Jun