In theory, hash map structure should be very fast on retrieving by key operations, close to O(1) like for an array. A sorted map (keys are sorted) should be O(log₂ N) instead. The following test checks the difference.

Common scenario

We will use one tester class per …

Free Pascal (like Delphi) provide some useful functions to watch heap memory state in your application.

function GetHeapStatus: THeapStatus;

THeapStatus is documented here

Example of using this function is below

program ProgWatchMem;

uses
  Math, FGL;

type
  TLongIntArr = array of LongInt; // LongInt is a 4-byte signed integer
  PLongIntArr = ^TLongIntArr;
  TMySortedMap = specialize …

In the previous article "Crack C# namespaces in 30 seconds" I demonstrated how to make error having no idea about it. So you will have a lovely time in debugging. But in C# you're condemned to use using directive or your code will be unreadable with all these horrible specifiers …

Multiple inheritance of interfaces which are pure abstract classes indeed is not a problem until you need to use the interface implementation in other classes.

Suppose there are two interfaces, the implementation of which will be used in other classes.

class IA
{
public:
    virtual void m1() = 0;
};

class IB : public …

GenieLamp is the software factory and model-driven development framework. You have no more to write a boilerplate!

Quick start on the project's wiki.

I'm looking for contributors, please, contact me at Github

Here is an example how to get N-2 calling procedure information.

Warning: code seeking debugging info is slow so be aware to use it in loops.

Make sure to compile with following options:

• -gl (not requierd but show file and line numbers info)
• -gs (show proc name after address)

var …

Let's perform a simple benchmark testing the random and sequential access to arrays and lists. I would like to compare:

• static array with predefined size (allocated on stack)
• TList container class (allocated on heap)
• dynamic array (allocated on heap)
• generic Delphi TList or Free Pascal TFPGList (allocated on heap)

I …

HP LaserJet Pro CP1025 is detected automatically by Ubuntu but it is not sufficient for printing. You should configure HPLIP.

At first time, check that HPLIP installed and its version is 3.11.1 at least

dpkg -l hplip

In Ubuntu 14.04 you should see something like this:

ii …

The namespaces conception in C# seems to be exhaustive and insufficient at the same time compared with a strong module notation in Oberon-2 and even with a modular programming approaches in Free Pascal/Delphi.

Why insufficient? You cannot declare constants and functions within namespaces but you should add a class …

Here is a small description how to make your own pretty small headless server using Cubieboard A10 microcomputer and Ubuntu operation system.

Important points

My server uses Cubieboard A10, but A20 should works too.

Plug monitor, keyboard, mouse and ethernet cable to Cubieboard.

Cubieboard has Android installed by default. So …