there is a 4D forums-thread Array to hierarchical list, need code. Main interest is converting a paths-array into a hierarchical-list.
Keisuke Miyako build a demonstration. Again using regex to split the path-elements
The Gem for me are these two lines in the object-method for the form-list.
//because we can’t directly assign to a form local variable
VARIABLE TO VARIABLE(Current process;Self->;$list)
- I learned two things
- we can use hierarchical list without an attached longint-variable, i.e. object-name only
- we can’t directly assign to a form local variable, unless we force 4D to call itself, even inexplicit