Dmitry questions

Dmitry answers

• Get the element after/before the matched one in json with jq
• jq error when looping through array: Cannot index array with string "<key>"
• How to extract fields from a json string using jq
• How to convert a huge single line json file to a multi line file without opening it?
• remove all values from JSON matching specific key
• lost packets only occur in the first run
• How do i know whether `rehash` happened after i insert into an unordered_map?