Easiest way is to use split... Given a tree widget this will take a path from field 1 and put the value at that path in field 2
on mouseUp pMouseButton local tTree, tLoc put the arrayData of widget 1 into tTree put field 1 into tLoc split tLoc by comma put tTree[tLoc] into field 2 end mouseUp Thanks, Brian On Sat, Apr 24, 2021 at 9:06 AM Paul Dupuis via use-livecode < use-livecode@lists.runrev.com> wrote: > I have only partially been following this thread, but if you need to > find the array 'content' in an arbitrary nested array from a comma > delimited path of array keys, recursion is the way to do it: > > function fetchArrayContentFromPath pArray,pPath > -- pArray is an array > -- pPath is a comma delimited 'path' of array keys to the desired > content > local tKey > if pArray is not an array then > return pArray -- I have reached the content, so return that content > else if pPath is empty then > return pArray -- should not happen in a tree widget, but this is if > the path ends in an array instead of the content of an array element > else > put item 1 of pPath into tKey -- get the key of element in the > currnet path > delete item 1 of pPath -- remove it from the current path, > so the path is the next set of key(s) > return fetchArrayContentFromPath(pArray[tKey],pPath) - recursively > fetch the remainig keys from the currnet array element > end if > end fetchArrayContentFromPath > > It will not matter is the 'path' is key1,key1 or > key1,key2,key3,key4,key5,key6,key7, or whatever. > > > On 4/24/2021 7:10 AM, Keith Clarke via use-livecode wrote: > > Hi folks, > > Inspired by Jaque’s (working - thank you!) response to my question “Show > Tree widget row contents on hover” I’ve isolated the final piece of that > puzzle that leaves me baffled. > > > > Specifically, can LiveCode accept a dynamically built key for a nested > multi-dimensional array? Copy the button script recipe below to see the > problem. > > > > Perhaps the LC array experts here can help explain why Jaque’s > hard-wired key definition works but my attempts to replicate this syntax > via scripting to support variable depth of arrays get ignored? Is it my > syntax or just the way arrays work in LC…? > > on mouseUp pButtonNumber > > > > # Create a nested array > > > > put "Content" into tArray["key1"]["key2"]["key3"]["key4"] > > > > > > # Replicate the path response from the Tree widget actionInspect function > > > > put "key1,key2,key3,key4" into pPath > > > > > > # Jaque's 'hard-wired' array key recipe works! > > > > answer tArray[item 1 of pPath][item 2 of pPath][item 3 of pPath][item 4 > of pPath] --returns 'Content' > > > > > > # Replicate Jaque's syntax dynamically > > > > put the number of items in pPath into tKeyCount > > > > put empty into iNum > > > > repeat for each item i in pPath > > > > add 1 to iNum > > > > # Try building the full key string > > > > put "[" & item iNum of pPath & "]"after tKey1 > > > > > > # Try building keys string to 'embed' into the regular array key syntax > > > > put item iNum of pPath after tKey2 > > > > if iNum < tKeyCount then put "][" after tKey2 > > > > > > # Try building by each key > > > > if i is not empty then put "[" & item iNum of pPath & "]" after tArray2 > > > > end repeat > > > > > > # Dynamic tKey1 results > > > > answer tKey1 -- returns '["key1"]["key2"]["key3"]["key4"]' ...seems > 'correct' > > > > answer tArray & tKey1 -- returns '["key1"]["key2"]["key3"]["key4"]' > ...dynamic key definition is not appended to array(?) > > > > > > # Dynamic tKey2 results > > > > answer tKey2 -- returns '"key1"]["key2"]["key3"]["key4"' > > > > answer tArray[tKey2] -- returns null ...dynamic key definition is not > understood (as first level key)? > > > > > > answer tArray2 -- returns '["key1"]["key2"]["key3"]["key4"]' ...dynamic > key definition is not appended to array(?) > > > > end mouseUp > > > > > > Best, > > Keith > > > > _______________________________________________ > > use-livecode mailing list > > use-livecode@lists.runrev.com > > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > > http://lists.runrev.com/mailman/listinfo/use-livecode > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
