An instance is a specific realization of any object.
Questions tagged [instances]
516 questions
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2 answers
How can I access non-static methods for instances of objects stored inside of an array?
I'm creating a simulation for one of my classes and I'm running into some trouble. Looking for some direction here + any tips.
I have two classes so far and I'm looking to implement some other things. At the moment, I want to be able to access the…
mmuso
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votes
1 answer
Can a group of instances be created with one already created instance?
I have in google cloud one instance created and in production. The instance is for one online store made with wordpress/woocommerce. I'm thinking in create a CDN and use Load Balancer. My question is, can I use that instance and create clones of…
nam_10
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1 answer
How to overwrite an existing dictionary Python 3
Sorry if this is worded badly, I hope you can understand/edit my question to make it easier to understand.
Ive been using python pickle to pickle/unpickle the state of the objects in a game (i do understand this is probably very storage/just…
user4548084
-1
votes
1 answer
WinForms Multi-Instance Forms with unique variables
New to C#; have been a VB.NET/VBA developer for years. Am currently working on an application for our off-site workers. I have a main switchboard form with a drop-down of project numbers. The user then has the ability to open a variety of form-based…
Matthew Johnson
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1 answer
access mysql on t2.micro from another t2 micro instance
I have installed mysql 5X in one t2.micro instance. And Installed hadoop in another t2.micro instance.
When i tried to connect to mysql from hadoop its saying connection failure. I am able to ssh between systems. How to make communications possible…
-1
votes
1 answer
I'm having difficulty accessing this class -- "error: non-static variable this cannot be referenced from a static context"
I'm creating a program that is supposed to create a memorization game that assigns colors to a user, and then tests how well the user can relay the colors back. Because of this, I created an array class that has two arrays (one with colors already…
Kody_06
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1 answer
Javascript basic instanciation
I am a javascript newbie who's trying to transition from processing to javascript.
Using Paper.js, I am simply trying to understand the equivalent of classes and their functions with the code below but keep having this error : Cannot read property…
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votes
2 answers
attribute has no self (but it is not a class attribute either)
I'm new to python and I've been trying to understand classes.
As far as I know, when you create a class, you must insert self before a variable, so that self is replaced by the instances, when they're created (these become instance…
Acla
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votes
3 answers
Can't create multiple instances of a class in Java
I'm trying to create multiple characters(squares) on the screen that move around randomly. I have already created a CharMove class that creates a square, and moves it around randomly on the screen. However, I tried creating multiple instances of…
Ninjaman494
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1 answer
PHP: Error in creating Server Instance in Google Cloud Compute
While using Google Cloud Compute's API in PHP, I am able to start, stop, delete instances as well as create and delete disks.
However, when trying to create an Instance, I keep getting this error
Invalid value for field 'resource.disks'
PHP Fatal…
Ali Alavi
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votes
1 answer
Android Find ListView instance which is created by Class in View Pager
I have to create one reporting application, in which sane report format, adapter is used to generate reports layouts dynamically in view pager adapter.
switch (index) {
case 0:
return new sfg();
case 1:
return new…
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votes
1 answer
Can anyone help me with how to use interfaces?
It is for a Minecraft plugin (though it's just to try to figure out how they work); thus, it's only for practice, in a sense. I can't figure out how to use the instance Explosive of the class Explosive of the package net.canarymod.api.entity. Any…
Alex Hewitt
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votes
1 answer
Understanding inheritance in practice. Printing values of an instance
I have a class of Agents with a working __str__ method.
I have a class of Family(Agents).
The Family is structured as a dictionary with the Agent ID as key.
After allocating agents to families, I iterate over my_families:
When I print…
B Furtado
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2 answers
Error: Source not found. The classes I have are build with the help of inheritance
I am new to JAVA and this is my first attempt with inheritance. When I try to debug the below codes, I get the error: Source not found. I have no idea how to fix this. I created all of them under the same package.
If you guys need me to post more…
user3469181
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2 answers
trouble writing a static version of the add and subtract methods (this is in java)
I need help writing a static version of the add and subtract methods. i have tried to do so but im not really sure if this is the right way and also my equals method is not working . When i compile my equals method it always prints false.
public…
Dee
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