Combining JSON arrays into a single JSON array -- better way than this?

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On Monday, 1 August 2022 at 09:01:35 UTC, ikelaiah wrote:

> Based in your suggestion, the snippet is now more brief.

While your string attempt wasn't that bad, because loading all in 
memory while not necessary is wasted memory if you have large 
files to process. I would just process each file and write it to 
the file directly but it always depends on the intended purpose.