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What is a dll?

Dmitry Chepcheruk
Dmitry Chepcheruk
August 14, 2012
What is a dll?

Software architectures are similar and often use the same code. In order for programmers not to write the same pages of code to each program, a format of dynamic connection of modules was invented - * .dll.

Let's more specifically understand what the dll. The abbreviation dll stands for Dynamic Link Library. This file format allows you to connect to the library program with pre-written code as needed. In dll you can store not only the executable code, but also various resources, such as graphics and video.

Using dll not only allowed to simplify the process of writing software code, but also makes it possible to save space on the hard disk due to the fact that new programs can use system files rather than install their personal libraries. Also, RAM is saved, because if one program has loaded a dll, the second one will not do this, but take advantage of the one already loaded.

Dll libraries are very widely used because of their advantages and the lack of serious flaws. And one drawback.It takes time to load them, so the first launch of functions requiring the use of a dll takes some time. After launching, these files remain loaded into RAM, so their further use will not take time to load.

To work with dll files, special software is used. You can read about this in the article “How to open a dll”.

If you are a novice programmer, then having learned what a dll is, you will certainly realize the advantage of using the Dynamic Link Library method and will certainly use it in your work.


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