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空配列がそのまま標準出力されてしまう。
$ echo '[]' | jq '.' []
$ echo '[]' | jq 'select(length > 0)'
配列の中身があっても大丈夫
$ echo '[1,2,3]' | jq 'select(length > 0)' [ 1, 2, 3 ]
以下の書き方だと中身がある場合に配列が崩れてしまう。
$ echo '[1,2,3]' | jq '.[]' 1 2 3
The text was updated successfully, but these errors were encountered:
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問題
空配列がそのまま標準出力されてしまう。
解決
配列の中身があっても大丈夫
ダメな例
以下の書き方だと中身がある場合に配列が崩れてしまう。
The text was updated successfully, but these errors were encountered: