Stack Overflow
Stack Overflow

Questions tagged [virtual]

An extensible or simulated artifact

Virtual memory: Giving the appearance of having greater system memory by paging infrequently used portions of memory out to disk, and reloading them from disk only when referenced.

Virtual hard disk: A software simulation of a hard disk.

Virtual method: a function that can be overridden in descendant classes to extend or replace existing functionality. This is a key aspect of polymorphism.

Virtual reality: A simulation of experience achieved by coordinating visual, audible, and tactile stimuli

3155 questions
1
vote
0 answers

How does loading of shared library takes place

I am running an executable which is dependent on another shared library. How does the library maps to virtual address space of a processs? Does every process has separate section for shared libraries in its virtual address space?
Naman Gupta
  • 29
  • 4
1
vote
0 answers

Using ag-grid, is it possible to implement editing when using virtual paging/infinite scrolling?

Reading ag-grid documentation, I see that it is explicitly specified that aggregation and grouping is not allowed when using virtual paging/infinite scroll. Does anyone know if editing of rows is supported when using virtual paging/infinite…
Raj
  • 11
  • 2
1
vote
2 answers

Create Apache Alias in 2.4.7

My server ip is internal (I dont have to publish it on internet) 192.168.251.4 I have a site in /opt/observium/html/ folder, I want to reach the site writing http://192.168.251.4/observium in browser. I tried with virtual hosts without success. OS:…
Diego Aguiari
  • 33
  • 1
  • 8
1
vote
1 answer

Virtual/Non-virtual inheritance

Suppose I have a base class: struct A{ virtual void foo() = 0; }; And then suppose I have a derived class like this: struct B : public virtual A{ void foo(){ /*something*/ } }; But I also want a copy of B like this (note that it is…
DarthRubik
  • 3,927
  • 1
  • 18
  • 54
1
vote
1 answer

Why cant virtual reality sets (HTC Vive/Oculus) play standard games

Visually speaking, the "displayed image" (in the steam/vive window) looks very similar to any other game being rendered on the desktop. Eg: Counterstrike, WoW, etc. Question: Why is it then these games don't "feel" like being in a VR…
alpharomeo
  • 418
  • 5
  • 13
1
vote
1 answer

Virtual function triggers compilation error on protected variable

class B { protected: int x; public: B(int i=28) { x=i; } virtual B f(B ob) { return x+ob.x+1; } void afisare(){ cout<
Alexandru Ionuţ Bujor
  • 74
  • 7
1
vote
0 answers

allocate virtual memory space when executing a program

I want to use a program which calculates tunnels and cavities in proteins. This apparently requires more virtual memory than the program is allocated by default, as I get the following error: "The computations requires more memory than Java Virtual…
gugy
  • 105
  • 11
1
vote
1 answer

Run custom programs on all instances within a Azure Virtual Machine Scale Set

There must be something I'm missing, but I've generated a virtual machine scale set from a custom image and I'd like to run a web server .exe on all of them. Is the only option to manually get into each individual instance and run the code? Do I do…
Terrence Mitchell Anderson
  • 11
  • 1
1
vote
1 answer

Virtual Keyboard recommendations (JavaScript)

Im looking for recommendations for JavaScript virtual keyboards (that aren't built with jQuery). So far I have only been able to find ones made with jQuery but I don't want to add jQuery to my project when everything else is written with native…
rgb
  • 1,246
  • 1
  • 10
  • 14
1
vote
0 answers

Delphi virtual TListView - icon remains selected even though the rest of the text is cleared

I have a virtual TListView which has an TImageList assigned to it. The item.ImageIndex is set on the OnData event. The listview is read only and has RowSelect as true and is displaying in vsReport ViewStyle. When I select a row and then select a…
Matt Allwood
  • 1,448
  • 12
  • 25
1
vote
1 answer

How to get a Virtual Machine Network information via SNMP from ESXi

I want to monitor the inbound/outbound traffic of a VM inside ESXi through SNMP. I activated SNMP protocol on ESXi and can get information with snmpwalk and snmpget. But I don't know which OID is the wright one to get the network info of my desired…
Sinai
  • 620
  • 1
  • 14
  • 36
1
vote
2 answers

Deriving from pure virtual template class

I belive my problem is simple, yet I cannot manage to overcome it. I have abstract template class aghContainer and child template class aghVector. I am trying to make aghVector object, but I get an error that I cannot create objects of abstract…
Łukasz Szcześniak
  • 1,417
  • 11
  • 23
1
vote
1 answer

How to toggle between a virtual and nonvirtual block in Simulink?

In Simulink library browser - Subsystem examples - Virtual and nonvirtual subsystem overview, the difference between a virtual subsystem and nonvirtual subsystem is explained: My question is how you can toggle between a virtual and nonvirtual…
Karlo
  • 1,630
  • 4
  • 33
  • 57
1
vote
3 answers

Instance creation with virtual functions, why?

i have a question about virtual functions or methods. I found a really nice post here on stackoverflow link to post explaining why and how virtual functions work. I understand how virtual functions work now, but i still dont understand WHY u need…
mirc00
  • 63
  • 3
1
vote
2 answers

go virtual function simulation

Is there exists some trick to implement virtual functions behaviour in go ? I have the following example. package main import "fmt" type A struct { } type B struct { *A } func (this *A) Do() { fmt.Println("IM DO") …
Oleg
  • 3,080
  • 3
  • 40
  • 51
1 2 3
…
99
100