object

[Solved] Accessing another class’ method from within a standalone function [closed]

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$db is not available within the function scope, you could Pass $db as an argument function func($db, $query, $params){ return $db->db_control($query, $params); } $results = func($db, $query, $params); Or function func($query, $params){ global $db; return $db->db_control($query, $params); } $result = func($query, $params); Use global to make it available within the function, there’s probably other solutions … Read more

[Solved] ERROR TypeError: Cannot set property ‘abc’ of undefined Angular2

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this in the reader.onload is not the object’s context. So it haven’t any variable with name jsondata. You can use arrow function to preserve your context to the object. reader.onload = (eve:any) => { this.jsondata[‘json_def’] = JSON.parse(eve.target.result); console.log(this.json_def); } 1 solved ERROR TypeError: Cannot set property ‘abc’ of undefined Angular2

[Solved] How to create an object C#

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You should separate your classes and use the nested classes as property types. namespace WindowsFormsApp { class Car { public Id Id { get; set; } public Tires Tires { get; set; } } public class Id { public string brand { get; set; } public string model { get; set; } public int year … Read more

[Solved] Why in OOP you do everything in objects? [closed]

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You choose object-oriented programming when encapsulating data and behavior into classes, whose instances, maps well onto the problem you’re trying to solve. Not every problem is best done with objects. There are other styles of programming – functional and declarative come to mind – that are also good. Most of the scientific programming that I … Read more

[Solved] How can I foreach this array object?

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Here You go: <?php $list = (object)[]; $list->egame = [ (object)[‘platform_name’=>’TT’, ‘game’=>(object)[(object)[‘game_name’=>’game1’, ‘info’=>’test1’],(object)[‘game_name’=>’game2’, ‘info’=>’test2’],(object)[‘game_name’=>’game3’, ‘info’=>’test3’]]], (object)[‘platform_name’=>’TG’, ‘game’=>(object)[(object)[‘game_name’=>’game4’, ‘info’=>’test4’],(object)[‘game_name’=>’game5’, ‘info’=>’test5’]]], (object)[‘platform_name’=>’TBIN’, ‘game’=>(object)[(object)[‘game_name’=>’game6’, ‘info’=>’test6’]]] ]; foreach ( $list->egame as $eg ) { foreach ( $eg->game as $game ) { echo “game: ” . $game->game_name . ” info: ” . $game->info . “<br>”; } } ?> Edit #1 … Read more

[Solved] Creating a second instance of an object changes whole class behavior (C++)

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WayPointStack wps = *(new WayPointStack()); must be WayPointStack wps; because it is enough and that removes the memory leak In WPCommand WayPointStack::GetNextWP() { … return *(new WPCommand(_END, 10000)); } you create an other memory leak, may be do not return the element but its address allowing you to return nullptr on error ? /*const ?*/ … Read more

[Solved] How to get number value of string value that is changing ; javascript [closed]

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Firstly, make your object valid. Then just split on a comma to extract the desired values. let obj = { map: { geo: “20.471884,-157.5056”, p: “Hawaii” } }; const [lat, lng] = obj.map.geo.split(“,”); console.log(lat); console.log(lng); The name is obj not location because location is reserved. solved How to get number value of string value that … Read more

[Solved] What exaclty happens when a you call a constructor(new Class),do instance initializer blocks runs first? [closed]

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The constructor executes in the following order: Calls the constructor of the superclass. Runs the instance initializer blocks in the order they were defined. Executes the rest of the body of the constructor. I.e., both of your sysout statements execute just before the assignment n=10;. That’s how it should be. See JLS ยง12.5. 1 solved … Read more