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Infix Notation question
Hi,
I am working on level 2 of the KX academy and had a question for infix notation.
I am using keyword except to manipulate a string by removing all capital letters in it.
However when I use the except keyword in the following infix notation it doesn’t work
For example:
s: ABSIBeifehisrBTE
s2: s except .Q.A each s
This doesn’t seem to do anything however if I write it this way:
s2: except[;.Q.A] each s
this works perfect.
What am I doing wrong with the infix notation for it to not work. Apologies if this is a simple question, I am still new to using KX/Q 🙂
Thank you.
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6 Replies
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Hi @megan_mcp
Thanks for the reply.
My example was not a good one. I realized that I had a list of strings so something like
“wKDe arB33e on”
“Ia quSesGREATt!”
When I run my original line of: “s except .Q.A” I get a type error and when I tried to add a “each” to it, I got parse errors. I guess my question would be how do I iterate through a list of lists while applying a function using infix notation.
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Maybe I’m understanding wrong, but if it’s a list of strings:
q)list: “wKDe arB33e on”, “I a quSesGREATt!”
q)list except .Q.A, .Q.n //remove capitals and numbers
"we are on a quest!"Or if you meant a list of lists:
q)list1: ("TpFcIc", "endkDg", "ZORkwh"), ("SjKvBM", "ioWzYM", "Ibuyjf")
q)list1 except .Q.A
"pccendkgkwhjviozbuyjf"Apologies if I’m not understanding correctly. If you could provide a screenshot of an example, I would be happy to help.
Megan
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Hi @Jonathan
Thank you for sending the example!
Reply from @rocuinneagain
Sample data:
q)list:("wKDe arB33e on";"I a quSesGREATt!")
q)list
"wKDe arB33e on"
"I a quSesGREATt!"
except cannot operate on lists of lists
q)list except .Q.A
'type
[0] list except .Q.A
You can project and use each
q)except[;.Q.A] each list
"we ar33e on"
" a quest!"
Or to use infix notation use each left \:
q)list except\: .Q.A
"we ar33e on"
" a quest!"
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Thank you! That helps alot.
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