jq filter expression in string interpolation.md

Query: jq filter expression in string interpolation

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I have been trying to reduce the array to a string to be used in string interpolation.

For example.

input = ["123", "456"]
expected output = array=123,456

Here is my try

$ echo '["123", "456"]' | jq 'array=\(.|join(","))'
jq: error: syntax error, unexpected INVALID_CHARACTER (Unix shell quoting issues?) at <top-level>, line 1:
array=\(.|join(","))
jq: 1 compile error

A:

with jtc:

bash $ echo '["123", "456"]' | jtc -qqT'"array={}"'
array=123, 456
bash $ 

If the spacer after comma (, ) is redundant, then alter the namespace $# holding a default separator (which is ", ") for array stringification:

bash $ echo '["123", "456"]' | jtc -w'<$#:,>v' -qqT'"array={}"'
array=123,456
bash $