VBA-FastDictionary

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VBA-FastDictionary

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Fast Native Dictionary for VBA compatible with Windows and Mac

VBA-FastDictionary 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# VBA-FastDictionary [![Mentioned in Awesome VBA](https://awesome.re/mentioned-badge.svg)](https://github.com/sancarn/awesome-vba)
Fast Native Dictionary for VBA. Compatible with Windows and Mac. Does not require DLL references or any external libraries.

This Dictionary is intended for VBA. However, it is Compatible with VBA7 / [twinBASIC](https://twinbasic.com/) / VB6 / VBA6.

The Dictionary presented in this repository is designed to be a drop-in replacement for Scripting.Dictionary (Microsoft Scripting Runtime - scrrun.dll on Windows). However, there are a few differences, and their purpose is to make this Dictionary the better choice from a functionality perspective. For more details see [Compatibility with Scripting.Dictionary](Implementation.md#compatibility-with-scriptingdictionary).

Special thanks to [Guido](https://github.com/guwidoe) for his contribution (see [Benchmarking code](benchmarking/README.md#benchmarking-code)) and for his invaluable feedback and ideas.

## Installation

Download and extract the source code (zip) from the [latest release](https://github.com/cristianbuse/VBA-FastDictionary/releases/latest), and import the ```Dictionary.cls``` file (located in the `src` folder) into your project.

Although the ```OLE Automation``` project reference should be enabled by default (fundamental COM), please enable it if it's disabled. For more details see [OLE Automation](https://github.com/cristianbuse/VBA-FastDictionary/blob/master/Implementation.md#ole-automation) section.

## Why use VBA-FastDictionary

- Easy replacement for Scripting.Dictionary
- Quite fast for a native VBA Dictionary 
- Mac compatible
- Overcomes limitations in the VB Class deallocation design and achieves linear deallocation speed. See [Fast Deallocation](https://github.com/cristianbuse/VBA-FastDictionary/blob/master/Implementation.md#fast-deallocation)
- Overcomes VB x64 Compiler Issues. See [x64 Assembly fixes](https://github.com/cristianbuse/VBA-FastDictionary/blob/master/Implementation.md#x64-assembly)
- Automatic Rehashing and Resizing
- Supports ```For Each```
- Has [Additional functionality](https://github.com/cristianbuse/VBA-FastDictionary/blob/master/Implementation.md#additional-functionality)

## Testing

Download the [latest release](https://github.com/cristianbuse/VBA-FastDictionary/releases/latest), extract and import the ```TestDictionary.bas``` module into your project.
Run ```RunAllDictionaryTests``` method. On failure, execution will stop on the first failed Assert.

## Benchmarking

In most cases, this Dictionary is the fastest solution when compared to what is already available. Please see [Benchmarking](benchmarking/README.md) for more details.

## Implementation

For those interested in how this Dictionary works and why some design decisions were made, please see [Implementation](Implementation.md) for more details.

## Demo

```VBA
Dim d As New Dictionary
Dim c As Collection
Dim v As Variant

d.Add "abc", 1
d.Add "Abc", New Collection

d("Abc").Add 1
Debug.Print d.Item("abc")
Debug.Print d.Exists("ABC") 'False

d.Remove "abc"
d.RemoveAll

d.CompareMode = vbTextCompare
d.Add "abc", 1
Debug.Print d.Exists("ABC") 'True

On Error Resume Next
d.Add "Abc", New Collection 'Throws error 457
Debug.Print Err.Number
On Error GoTo 0

d.Add 123, 456
Set c = New Collection
d.Add c, "Test"

d.Item(123) = 789
d.Key(c) = "Test"

Debug.Print
For Each v In d
    Debug.Print v
Next v

Debug.Print
For Each v In d.Items
    Debug.Print v
Next v
```

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