Remove element by Key

Question

I'm trying to remove the key and respective value from an association where the key starts with an underscore.

So some association:

asso = <|"key1"->{}, "key2"->"string", "_key3"->3, 
    "_key4"-><|"key5">"otherString","_key6"->"otherOtherString"|>
|>

should become just:

<|"key1"->{},"key2"->"string"|>

Note everything in the value for _key4 is removed.

kglr · Accepted Answer · 2017-06-12 21:29:28Z

12

Also

KeySelect[StringStartsQ[Except @ "_"]][asso]

<|"key1" -> {}, "key2" -> "string"|>

answered Jun 12, 2017 at 21:29

kglr

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$\begingroup$ That works too, thank you. $\endgroup$
– Joe Blow
Commented Jun 12, 2017 at 21:41

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Kuba · Accepted Answer · 2017-06-12 20:49:51Z

6

asso // KeyDrop@Select[Keys[asso], StringStartsQ["_"]]

answered Jun 12, 2017 at 20:49

Kuba

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$\begingroup$ My god that is complicated. $\endgroup$
– Joe Blow
Commented Jun 12, 2017 at 20:56
$\begingroup$ You're spot on with that code, thank you. $\endgroup$
– Joe Blow
Commented Jun 12, 2017 at 21:09

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2 Answers 2