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Super User

Replace comma with semi colon at fixed intervals

Hi,

In 3 cells i have the following entries

2145,item a,-27,2.1

2187,item b,-32,2.17,2187,item c,-47,2.25

2111,item c,-47,2.23,2122,item a,-27,2.0,2187,item b,-32,2.15,2187,item d,-52,2.8

In each cell, i would like to replace the comma at every instance which is a multiple of 4 with a semi colon.  So the commmas at the 4,8,12,16,20 positions should be replaced with a semi colon.

Thank you.

Regards,
Ashish Mathur
http://www.ashishmathur.com
1 ACCEPTED SOLUTION
Super User
``= Table.AddColumn(Source, "Rpl", each let pos = try List.RemoveNulls(List.Zip(List.Split(Text.PositionOf([Column1], ",", 2),4)){3}?) otherwise {} in List.Accumulate(pos, [Column1], (s,c) => Text.ReplaceRange(s,c,1,";")))``

 Thanks to the great efforts by MS engineers to simplify syntax of DAX! Most beginners are SUCCESSFULLY MISLED to think that they could easily master DAX; but it turns out that the intricacy of the most frequently used RANKX() is still way beyond their comprehension! DAX is simple, but NOT EASY!
8 REPLIES 8
Solution Sage

show the result as it should be

Super User

Thank you Ahmedx.  CNENFRNL has answered my question.

Regards,
Ashish Mathur
http://www.ashishmathur.com
Super User
``= Table.AddColumn(Source, "Rpl", each let pos = try List.RemoveNulls(List.Zip(List.Split(Text.PositionOf([Column1], ",", 2),4)){3}?) otherwise {} in List.Accumulate(pos, [Column1], (s,c) => Text.ReplaceRange(s,c,1,";")))``

 Thanks to the great efforts by MS engineers to simplify syntax of DAX! Most beginners are SUCCESSFULLY MISLED to think that they could easily master DAX; but it turns out that the intricacy of the most frequently used RANKX() is still way beyond their comprehension! DAX is simple, but NOT EASY!
Super User

Hi,

Thank you for your help.  Could you kinldy clarify the following:

1. What is the result of List.Zip in the second row - 2187,item b,-32,2.17,2187,item c,-47,2.25
2. What is the {3}? doing there.  I read up on the ducumentation of List.Zip but did not find these inputs explained there.

Regards,
Ashish Mathur
http://www.ashishmathur.com
Super User

Hi, my friend, now you see how awful the readability of M is ... for this snippet of code

``try List.RemoveNulls(List.Zip(List.Split(Text.PositionOf([Column1], ",", 2),4)){3}?) otherwise {}``

you can strip it down this way,

``````let
Source = "2187,item b,-32,2.17,2187,item c,-47,2.25",
#"Pos of All Occurrences" = Text.PositionOf(Source, ",", Occurrence.All),
#"Split by 4" = List.Split(#"Pos of All Occurrences", 4),
Zipped = List.Zip(#"Split by 4"),
#"4th Element of List" = Zipped{3}?, //"?" is "Selection and Projection Operators": https://learn.microsoft.com/en-us/powerquery-m/m-spec-operators
#"Removed Nulls" = List.RemoveNulls(#"4th Element of List")

in
#"Removed Nulls"``````

 Thanks to the great efforts by MS engineers to simplify syntax of DAX! Most beginners are SUCCESSFULLY MISLED to think that they could easily master DAX; but it turns out that the intricacy of the most frequently used RANKX() is still way beyond their comprehension! DAX is simple, but NOT EASY!
Super User

Hi,

Thank you for that explanation.

Regards,
Ashish Mathur
http://www.ashishmathur.com
Solution Sage

look i got you right

Super User

Thank you for replying.  The result does not look correct.  I want every 4th comma to become a semi colon.  Also, please paste the code - you have only posted the image.

Regards,
Ashish Mathur
http://www.ashishmathur.com

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