String.format could work; I would prefer to have an inline syntax for the
string formatting rather than appending it at the end, but that's the major
objection. The main goal was to have the strings be easy to write and to
make it easy to have variations. I'm also trying to avoid eval-ing a string.
I have used closures elsewhere in the same program for similar effects, but
I hadn't managed to wrap my head around how to format it for this
particular application. Trying out something along the lines of the
suggested code seems to work, I'll have to play around with it to see if it
works for all of my use cases.
Thanks for the help.
On Tuesday, November 25, 2014 5:27:05 PM UTC-5, Gary Verhaegen wrote:
>
> Can you elaborate on what makes String.format not a good fit here?
>
> On Tuesday, 25 November 2014, James Reeves <ja...@booleanknot.com
> <javascript:>> wrote:
>
>> Do you know about closures? So something like:
>>
>> (defn foo [arg1 arg2]
>> (fn [state] (do-something-with state arg1 arg2)))
>>
>> - James
>>
>> On 25 November 2014 at 18:55, Isaac Karth <isaacka...@gmail.com> wrote:
>>
>>> I'm trying to build a string output system with functions that later
>>> have a state passed to it, so that I can write something like (output
>>> "The result of this example is: " (get :result)) and have it passed to
>>> a parsing function that takes a state and calls the functions in the list,
>>> something like (let [state] {:result "success"}](-> state (get
>>> :result))). Basically, a delayed evaluation of the functions in the
>>> list until they get the context later.
>>>
>>> I've gotten far enough that I can send an unevaluated list of
>>> single-argument functions via(defmacro output [& data] `[~@data]) but
>>> sending a function plus some arguments is trickier and I'm having trouble
>>> working out the quoting and unquoting that needs to go on.
>>>
>>> Alternately, is there a better way to solve my original problem?
>>> Basically, I want to have a concise and simple format to enter mostly text
>>> with a few functions/variables and have it evaluated in a totally different
>>> context later. Or maybe there's a parser or text processing library that
>>> would handle this better?
>>>
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