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Calling a class and function using variable


By : user2174648
Date : October 17 2020, 08:10 PM
it helps some times You're not really concatenating strings. The non-dynamic part of namespace in your example isn't a string.
You can do it like this:
code :
$class = '\App\Core\Forms\\'.$form.'\\'.$form.'\DataSource';
return $class::$fuToCall();
return ('\App\Core\Forms\\'.$form.'\\'.$form.'\DataSource')::$funcToCall();


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Setting a variable to the name of a class and calling a function from that class


By : Little bad boy
Date : March 29 2020, 07:55 AM
will be helpful for those in need You can get a reference to the "Bar" object from it's name as a string from the mapping returned by locals (or globals depending on where Bar is defined):
code :
locals()['Bar'].printer()

Calling a class and function in another file to edit the variable in the class


By : Splinked
Date : March 29 2020, 07:55 AM
Any of those help You cannot "reach into" functions and change variables used within them. From a sort of theoretical computer science standpoint, it doesn't even make sense. The variable $var only exists while the function is executing. When you call $foo->bar(), the code in it runs, creating the local variable $var, assigning 10 to it, then returning it. Then the whole scope is destroyed and the variable $var ceases to exist. It's not possible to alter it at all from code outside of Foo::bar, because it doesn't exist while code outside of Foo::bar is running. That's no to mention variable scope or encapsulation at all...
Most likely you'll want a property:
code :
class Foo {

    public $var = 10;

    public function bar(){
        return $this->var;
    }

}

Tkinter calling function in class through class variable


By : Hakairo
Date : March 29 2020, 07:55 AM
hop of those help? I am using Tkinter and trying to call a function within a class, but not getting it to work properly. , Your problem will be solved when you call the function using self.
code :
refSelect = Button(topFrame, text="Open Reference File", 
                    command=self.refSelect_load_file, bg = "yellow")
class Access_all_elements():
    def __init__(self):
        refSelect = Button(topFrame, text="Open Reference File", 
                command=lambda:self.refSelect_load_file, bg = "yellow")
        refSelect.grid(row =1, column=1)


    def refSelect_load_file(self): 

        self.reffname = askopenfilename(filetypes=(("XML files", "*.xml"),
                                                   ("All files", "*.*") ))
        if self.reffname:
            fileOpen = open(self.reffname)
from tkinter import *
from tkinter import filedialog


class Access_all_elements():

    def __init__(self):
        refSelect = Button(root, text="Open Reference File",command=self.refSelect_load_file, bg = "yellow")
        refSelect.grid(row =1, column=1)

    def refSelect_load_file(self): 
        self.reffname = filedialog.askopenfilename(filetypes=(("XML files", "*.xml"), ("All files", "*.*") ))
        if self.reffname:
            fileOpen = open(self.reffname)

root = Tk()
Access_all_elements()
root.mainloop()

Calling a function (containing variable) in another class


By : Sanjaya
Date : March 29 2020, 07:55 AM
I wish did fix the issue. First create a singleton class like this
Singleton class
code :
  import UIKit
  import Foundation

class Singleton: NSObject
{
    static let sharedInstance = Singleton()

    override init()
    {
        super.init()
    }


    func placeBlockerView(target : UIViewController)
    {
        var loadView:UIView!
        loadView = UIView(frame: target.view.frame)
        loadView!.backgroundColor = UIColor.black
        loadView!.alpha = 1.0

        let actView = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.gray)
        actView.frame = CGRect(x: 0, y: 0, width: 20, height: 20)
        actView.center = CGPoint(x: target.view.bounds.size.width / 2 , y: target.view.bounds.size.height / 2 )
        actView.startAnimating()

        loadView?.addSubview(actView)
        target.view.addSubview(loadView!)
    }
}
Singleton.sharedInstance.placeBlockerView(target: self)

Javascript class extension : calling base class-function from child-class function : seem to be calling static method


By : Tarık Altıncı
Date : March 29 2020, 07:55 AM
To fix the issue you can do This is complicated to explain but I've been on this for days now. I'm "extending" one Javascript "class" to another but calling a base-class method from a child-class method does not work properly. It seems as if the base-class-method "acts" as a static method : properties that are defined in the childclass somehow have their default values when calling a base-class-method from a-child-class method. , What happens in this line of code:
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