It is very strange. I have cloned  
https://github.com/ctford/klangmeister/tree/master/src/klangmeister/compile 
and run: lein figwheel
The app has run and I can play with music via REPL
Next I had extended synthesis.cljs with my sstr function and registered that 
functions to namespace-declaration
After stoping app, removing target and starting lein fig wheel, the sstr is not 
visible in REPL ;-(


On Saturday, 2 April 2016 22:32:49 UTC+2, Mike Fikes  wrote:
> Hi Olek,
> 
> The first argument to `eval`—the compiler state—would need to have metadata 
> regarding your `sstr` function. Since the state is empty, you run into a 
> problem. (As a quick aside, there is no need to write your own `eval-str` 
> that calls `eval`—one exists in `cljs.js`.)
> 
> Frequently, for REPLs and other use cases, the compiler state is kept in a 
> top-level def, and the same state passed back in. (This causes the compiler 
> state to be mutated to incorporate new definitions that are encountered when 
> evaluating things.)
> 
> But, in your case, you want to call a function in the very same namespace 
> that is hosting your code. One interesting solution to this is in Chris 
> Ford's Klangmeister project. Have a look in the code in this area to see how 
> he does it using some cleverness with macros: 
> https://github.com/ctford/klangmeister/tree/master/src/klangmeister/compile
> 
> With respect to your last question: If I understand, most definitely "yes". 
> All of the evaluation / execution with self-hosted ClojureScript is happening 
> in the target JavaScript engine (no need for runtime support in the back-end 
> server.)
> 
> - Mike

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