Thanks for the quick responses. Lorenzo, I had intended to pass an empty string to that verb, I must have somehow missed it when copy-pasted my code, sorry about that.
Raul, I started to clean up my code in the ways you suggested and it seems to have resolved the errors I was getting. Now that portion of my code is working perfectly. Must have been my messy code causing issues. Thanks to both of you. Justin On Mon, Jul 25, 2011 at 2:21 PM, Raul Miller <[email protected]> wrote: > On Mon, Jul 25, 2011 at 1:50 PM, Justin Tirrell <[email protected]> > > Currently, I have written it with a variable that I can use in my > grid > > locale and increment after each query. For example: > > > > ".('mygrid',(":currgrid),' =:conew ''jgtkgrid''') > > NB. currgrid is an integer that is incremented after each query > > ".('create__mygrid',":currgrid) > > ".('handler__mygrid',(":currgrid),' =: 3 : handlerdef') > > I do not know what problem you are trying to solve by using > auto-increment names to hold your locales. So I cannot suggest an > alternative there. > > That said, I can suggest a cleaner way of doing what you are currently > doing. > > First, you can define a wrapper for getting at the names you are using: > > mygrid=:3 :0 > 'mygrid',":y > : > x,'__mygrid',":y > ) > > Then, you can rephrase the above sentences like this: > > (mygrid currgrid) =:conew 'jgtkgrid' > NB. currgrid is an integer that is incremented after each query > ('create' mygrid currgrid)~ '' > ('handler' mygrid currgrid)=: 3 :handlerdef > > The key insights here are: > > 1. You can use a string to refer to a variable being assigned. > 2. You can use a string to refer to a verb to be consumed. > > For assignment, when using an expression to compute the name you are > assigning to, you should put that expression in parenthesis. > > The operator which lets you use a string to refer to a verb name is ~ > > That said, > ('handler' mygrid currgrid)=: 3 :handlerdef > > would probably be better handled by creating a definition for handler > in a class that inherits from jgtkgrid. In otherwords: > > coclass'mygtkgrid' > coinsert'jgtkgrid' > handler=: handlerdef_base_ f. > > Though it would be clearer, I think, to use the literal definition of > handlerdef_base_ instead of putting it where you do not need it and > referring to it indirectly. > > Also note that you need to end your class definition. This will > either be the end of file, or the begining of a new class definition > or a cocurrent'base' statement. > > Also, the sequence > (mygrid currgrid) =:conew 'jgtkgrid' > NB. currgrid is an integer that is incremented after each query > ('create' mygrid currgrid)~ '' > > would be better implemented as: > (mygrid currgrid) =: '' conew 'jgtkgrid' > > This works because when conew is given a left argument, the create > method in your class is run with that as its argument. > > And if you only need that one line, you could even do without the > 'mygrid' verb, leaving you with: > > ('mygrid',":currgrid) =: '' conew 'jgtkgrid' > > > I hope this helps, > > -- > Raul > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
