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How to get array of all `this` of an instance


How to get array of all `this` of an instance

By : user2185270
Date : November 21 2020, 04:01 AM
Does that help I think you do need to compare to all subobjects, but it's better to write a function than to use an array:
code :
struct C: A, B
{
    bool is(void* that) const
    {
        return this == that
            || static_cast<const A*>(this) == that
            || static_cast<const B*>(this) == that;
    }

    void btn_Click(void* sender, EventArgs* e) {
       if (this->is(sender)) return;
       // ...
    }
}


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Unable to transfer values from instance object into instance array of parent class

Unable to transfer values from instance object into instance array of parent class


By : Kevin McKinley
Date : March 29 2020, 07:55 AM
wish of those help Try to bind the handler to the object with goog.bind:
code :
goog.net.XhrIo.send(this.URL+'/action.url.php', goog.bind( function(e){
    var items = new Object();
    items = e.target.getResponseJson();
    for(var x in items)
    {
        var currentName;
        var currentCat;
        if(items.hasOwnProperty(x))
        {
            currentName = items[x].name;
            currentCat = items[x].categories;
        }
        var x = goog.dom.createDom('div', {
        }, currentName, currentCat);
        console.log(this.mainView);
    }
    return e;
}, this),'POST', 'action=getUserData');
In AngularJS tutorial select only one instance, or the first instance in an array

In AngularJS tutorial select only one instance, or the first instance in an array


By : Stoobiedoo
Date : March 29 2020, 07:55 AM
hope this fix your issue I want to select only the first instance of an array in angular instead of using ng-repeat. I was thinking something like ng-instance, or ng-specificinstance but they don't exist. Also how should I define my javascript variable and what is the standard for referencing it in my html: "phoneinfos" or "phoneinfo" if its only one entity. Also should all things with lots of items should it always end in an s? , What about:
code :
<div id="searchtab-1" style="height:1.5em;" ng-controller="PhoneListCtrl">
     <label>{{phoneinfo.count}}</label>
</div>
$scope.phoneinfo = {
    count: '555',
    type: 'mobile'
};
<div id="searchtab-1" style="height:1.5em;" ng-controller="PhoneListCtrl">
    <label>{{phoneinfos[0].count}}</label>
</div>
Instance variable array containing other instance variables doesn't reflect changes to contained elements

Instance variable array containing other instance variables doesn't reflect changes to contained elements


By : Bhavesh Sharma
Date : March 29 2020, 07:55 AM
I wish this helpful for you Because that's how variables work, here and in virtually every other programming language.
Your array contains the values of @bar and @baz at the time the array was created. It does not contain references to the variables themselves. Modifying one does not modify the other.
code :
x = 3;
y = x;
x = 4;
# Why doesn't y equal 4?
class Foo
  attr_accessor :bar, :baz

  def attrs
    [@bar, @baz]
  end
end
Smalltallk - How can I get an Array (or Collection) of the all the Instance variables in an Object (the current Instance

Smalltallk - How can I get an Array (or Collection) of the all the Instance variables in an Object (the current Instance


By : user3188320
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further You can send #allInstVarNames to a class (Behavior) to get names of all instance variables defined by it and by superclasses. If you need without superclass variables, you can use #instVarNames
Let's say that var is your variable that you need to work with. Then you can get the collection of instance variable names and iterate them.
code :
var class allInstVarNames do: [ :instVarName |
  var instVarNamed: instVarName put: <yourValue>
check if array includes an instance with a certain value for an instance variable Ruby

check if array includes an instance with a certain value for an instance variable Ruby


By : 李斯颤
Date : March 29 2020, 07:55 AM
I hope this helps you . I would recommend using anattr_reader for this one unless you plan on modifying the type somewhere after (in that case use attr_accessor which is both a writer and reader)
code :
class A
  attr_reader :type
  def initialize(type)
    @type = type
  end
end
instance = A.new(2)
another_instance = A.new(1)

array = [instance, another_instance]

array.select do |item|
  item.type == 2
end
=>[#<A:0x00000000dc3ea8 @type=2>]
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