Linq

High performance Linq for Unity

Improved performance when using Linq with Mobile (il2cpp).

To use it instead of using System.Linq change it to Pancake.Linq

It will be a little different from System.Linq that Select is replaced with Map, and Where is changed to Filter

Result test in Android v8 snapdradon 855

	System.Linq (ms)	Pancake.Linq (ms)
Aggregate	2890	140
Any	2986	159
All	3167	159
Averange	3042	106
Contains	10048	133
Count	3227	186
Distinct	4578	8449
First	311	18
Last	3118	0
Max	1283	377
Min	1233	398
OrderBy	16221	15136
Range	314	61
Repeat	593	198
Reverse	3607	456
Select (Map)	3925	629
Single	3264	185
Skip	10384	432
Sum	3055	79
Take	1365	67
Where (Filter)	2267	1054
Where2	233	615
Where3	3842	622
WhereSelect	4372	810
WhereSpan	655	674
Zip	17219	580

1000 loop in array 10k element (anroid 11 redmi note 10 pro)

	System.Linq (ms)	Pancake.Linq (ms)
Aggregate	344	30
Any	0	0
All	0	0
Averange	329	17
Contains	0	1
Count	362	28
First	0	0
Last	350	0
Max	228	70
Min	412	8
Range	40	6
Repeat	68	21
Reverse	595	64
Select (Map)	508	77
Skip	515	32
Sum	387	79
Take	437	32
Where (Filter)	276	134
WhereSelect	263	144
Zip	1397	88