Apply slice or replace function to a set

[Marek Nos]

I'm askin if its possible to use one of the powerful slice or replace functions on multiple elements at once.

I've data set like:
{"products":
  {"instock": 0, "code": 123456789},
  {"instock": 1, "code": 23456789}
  {"instock": 1, "code": 3456789}
}
and query like:
$.products[@.instock > 0].code
which returns Generator I can itterate or print. But I would like to get only first 4 characters of the code.

Result would be like
1234
2345
3456

Is that possible with Objectpath? To extend slice/replace and other string functions to be able to work on a set?

Thanks
Marek

[Adrian Kalbarczyk]

Try this:

>>> slice(["sss","aaa"],[0,2])
[
"sss",
"aaa"
]
>>> slice(map(str, $.products[@.instock > 0].code), [0,3])
[
"1234",
"2345"
]

Use map(int, ...) to convert array of strings back into numbers. Mind that this query might be somewhat slow.

If that doesn't work, try the newest version (from github), if still doesn't, send a bug on GH.

Hope that helps.

Greetings,
Adrian Kalbarczyk

http://kalbarczyk.co/

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