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Questions tagged [internals]

The internals tag denotes questions about how things work, as opposed to how to accomplish something specific. Of course, how something works underneath will have practical implications, but internals questions aren't about how to do something; rather, how to understand something.

If you understand how a database or parser or version control system actually works, you'll be better at using it. Internals questions seek this kind of inside knowledge.

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List.Add() method internals

The System.Collections.Generic as most of C# developers knows, contains the List class. The class exposes the Add method, which is implemented as follows: [__DynamicallyInvokable] public void Add(T item) { if (this._size == this._items.Length) …
Eru
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What is "api-ms-win-core-..."?

I have 2 questions regarding those DLLs: Why do they exist? I can see that all they do is have exports that forward to functions in other modules like Kernel32 or NtDll When I use LoadLibrary with one of those modules, it ends up loading something…
orORorOR
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Where are the sockets saved in the kernel?

I am having troubles finding answer to this question: When the kernel receives a packet and processes it, how does it knows which sockets are available? I have seen that there is some kind of a socket queue, but I am trying to dive into the…
Amit Azulay
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Server Error 500 When Using gcloud to deploy my Python Web App

After following freecampcode's web application tutorial, creating my own Google Cloud SDK project and deploying my sample social network website using Python and Flask (which I found mostly thought this tutorial), I am getting this same error:…
David D'Silva
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Track all function calls at run-time

Is there some way to track every single function call happening in my app at run-time? So even if I were to open my app in a debugger and add a call instruction, I could catch that too? One way I could think of is putting a page guard on the .text…
orORorOR
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WAMP server was pointing to IP address, IP address has now changed. I can no longer access my site

When setting up WAMP I could not use localhost because of many errors. So I pointed it specifically to an IP address everything worked great for 1 year, we have moved and now have a new IP. Where is it that I have to change info to new IP address?
Robyn
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App crashes with IndexOutOfBoundException: setSpan ... ends beyond length 1 in performAccessibilityAction

I get this ACRA report from an unknown source using an app I posted to Google Play: java.lang.IndexOutOfBoundsException: setSpan (4 ... 4) ends beyond length 1 at android.text.SpannableStringBuilder.checkRange(SpannableStringBuilder.java:1090) …
mrieker
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DataTables warning: table id=user_data - Ajax error. For more information about this error, please see http://datatables.net/tn/7

Here, i am using bootstrap datatables to load my data from database. But when i open the page it shows the error and in console it shows ---Failed to load resource: the server responded with a status of 500 (Internal Server Error).. How to solve…
Eleas
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Nat / Redirect / Forward ports Mikrotik

I sorry to botther with this... I have a public IP 181.188.xxx.yyy and I have a Local IP range which is 192.168.10.0/24 on that range I have a Server which is 192.168.10.3 which runs different services on diffente ports, lets say Expressjs on 3000,…
Marce Sanchez Melgar
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Internal Server Error from perl script solved by adding "-w" to the shebang line. But Why?

I spent hours and hours trying to fix an Internal Server Error on a perl program. I distilled the program down to the very simplest, and nothing would work. In fact, here's the entire program: #!/usr/local/bin/perl use strict; print "Content-type:…
user533604
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How can I step into internal Python code in PyCharm?

I want to follow what import foo does. When I try to step into it, it says in the debugger. I have seen this other question but it is asking for stepping into a Python C function.
vaughan
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Do adaptive databases exist? Where the database changes it's internals structure/algs based on user behavior?

Currently learning about database internals, and it seems like there's a lot of interesting tradeoffs when you are designing a data management system. Some of these tradeoffs seem to be dependent on what kind of behavior you think will occur once…
questions
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Installing nextcloud on nginx, getting error 500

I'm following the instructions to install Nextcloud on an nginx server. I copy the configuration from the offical documentation, i set my server name and my ssl certificate path, and when i try to reach nextcloud from my browser i get "500…
mrbackslash
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Where does Windows store its services data?

Per Wikipedia and other resources such as Windows Internals book, the SCM gets the data it presents in Services.exe by reading HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ServiceGroupOrder\List and …
Moses
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vaadin. running 2 spring apps simultaneously

I have a multi-module spring gradle app. 2 modules are executable, both modules use vaadin 14.1.17. I use a remote server to deploy two jar at the same time, but every time I run the second application, the first breaks. help to understand what the…
Inside Good
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