ios - How do I add didSet to view property of UIViewController? -

-

in uiviewcontroller, add code view property set:

var view:uiview! {     didset {         //(view myview).delegate ...     } }

obviously, doesn't work because cannot override variable of super class.

is there workaround achieve want?

the view set once, , @ time viewdidload called. go flow , override viewdidload , set delegate there.


Comments

Post a Comment

Popular posts from this blog

angularjs - Showing an empty as first option in select tag -

-
my app showing empty select field first entry. have read other solution given , tried still not working. my controller code is: .controller('usercreatecontroller', function(user,profile,auth) { alert("hello"); var vm = this; vm.type = 'create'; profile.all() //this service fetch profiles shown in select field .success(function(data){ vm.profile = data; }); vm.userdata.profile = vm.profile[0]; //here have set default value select field and html page is: <label class="col-sm-2 control-label">profile</label> <div class="col-sm-8"> <select ng-model="user.userdata.profile" ng-options="person._id person.profilename person in user.profile"> </select> </div> hierarchy of vm.profile { "_id": 46, "profile": objectid("5516498e95b84548156db754"), "isactive": true, "password": "$2...
Read more

python - argument 2 to map() must support iteration -

-
hi i'm making basic raycast engine think nice start minimap problem class map ask mapgrid in constructor , when pass python give me error argument 2 map() must support iteration this code: main part import pygame def map(object): def __init__(self,grid,scale): self.grid= grid self.mapwidth= len(grid[0]) #number of map blocks self.mapheight= len(grid) self.minimapscale= scale #how many pixels draw map block self.miniwidth= self.mapwidth * self.minimapscale #size of minimap self.miniheight= self.mapheight * self.minimapscale self.rectgrid= grid y in range(self.mapheight): x in range(self.mapwidth): self.rectgrid[y][x]= pygame.rect(x,y,self.miniwidth,self.miniheight) def blitminimap(): pass data file mapgrid= [ [1,1,1,1], [1,0,0,1], [1,0,0,1], [1,1,1,1] ] size = [640, 480] map class import pygame def map(object): def __init__(self,grid,sc...
Read more

javafx - How to wait cancellation of task after Service#cancel? -

-
look @ example: package sample; import javafx.application.application; import javafx.application.platform; import javafx.concurrent.service; import javafx.concurrent.task; import javafx.stage.stage; public class main extends application { //notice: class in **other file** (here example) private static class myservice extends service { @override protected task createtask() { return new task() { @override protected object call() throws exception { system.out.println("service: start"); while(true) { system.out.println("service: iteration"); // thread.sleep(3000); // raise interruptedexception after cancel, how such code (it won't raise exception): for(long = 0; < 1_000_000_000; i++) { } if (iscancelled()) ...
Read more