M code Higher order functions , functions generators

[Dicken]

Hello, 
  does anyone know  where  can find informatons on the Higher order funditions, 
Splitter, Combiner, Replacer, 
I don't want a 'how to' docs tiype info I am more interested in how there workings differ from standard functions,
so if anyone knows of a blog or something  please let me know, 

Richard. 

[Dicken]

Thanks have not seen the custom splitter one,    I have alwasys tended to use a custom spilt in 
things like table.Replacevalues,  so eg ; 

 Table.ReplaceValue(  Custom1, each [a] , "X",  
(x,y,z)=> if Value.Type( y ) = type text then z else x , 
Table.ColumnNames( Source ))

so it will be interesting to see her take on custom spltters, you have probably seen it to r de groot did a video on 
comparers.   re my initial queyr I was more interested in advantages or not of higher order or generatror functions over 'normal' ones. 
Thanks for the help . 

Richard. 

[adudani · Accepted solution]

hi @Dicken ,

some references are below: 
blog : should find all functions here : Splitter Functions Overview | Power Query M

video demos

Power Query Magic: Crafting a Custom Splitter from Scratch | Melissa De Korte - YouTube

Replace Values Based on Condition (in a Single Step) in Power Query - YouTube

[Dicken]

Justo to say thanks, really like the Melissa, vid, had not seen it , learnt quite a bit.