On 1/31/2020 10:38 AM, Wisdom90 wrote:

Hello..

Delphi and Freepascal Libraries that implement higher-order functions
like Map, Reduce and Filter version 1.02

I have ported it from Delphi to Freepascal and i have corrected some
bugs, and now i think it is stable and fast.

Authors: Amine Moulay Ramdane

Description:

Delphi and Freepascal Libraries that implement higher-order functions
like: Map, Reduce and Filter.

Map: This is available in many functional programming languages. This
takes as arguments a func function and a list of elements list, and
returns a new list with func applied to each element of the list.

Reduce: This is also known as Fold. This requires a combining function,
a starting point for a data structure, and possibly some default values
to be used under certain conditions. The Reduce function proceeds to
combine elements of the data structure using the injected function. This
is used to perform operations on a set of values to get only one result
(or a smaller set of values) that represents the reduction of that
initial data. For example, the values 1, 2, and 3 can be reduced to the single value 6 using the SUM .

Filter: This requires a data structure and a filter condition. This
returns all the elements in the structure that match the filter condition.

My Delphi library uses Delphi generics and anonymous methods to
implement Map, Reduce and Filter.

My Freepascal library uses Freepascal generics and variants to implement
Map, Reduce and Filter.

Please look at the Delphi demo inside the zip file called
test_MapReduce.pas .

You can download them from:

https://sites.google.com/site/scalable68/delphi-library-that-implements-higher-order-functions-like-map-reduce-and-filter

Language: Delphi 2009+ and Freepascal 3.02+

Operating Systems: Windows, Mac OSX , Linux, iOS, Android

Thank you,
Amine Moulay Ramdane.

I have also enhanced it in version 1.02


Thank you,
Amine Moulay Ramdane.

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