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2020-10-19 19:03:41 +0200 评论回答 Prevent dialogs to open or save files from showing every last hidden folder?

The Ctrl+H keypress is most probably the answer to the OP's question, if they work on Linux.

2020-10-19 09:43:10 +0200 获得奖牌  粉丝
2020-10-07 10:31:09 +0200 评论回答 average number of days

Yes, my answer is very simplistic as @mgl stated; it all depends on what the OP really wanted, and mgl rightly asks for

2020-10-06 14:22:13 +0200 获得奖牌  拥护者 (来源)
2020-10-06 12:13:18 +0200 获得奖牌  老师 (来源)
2020-10-06 11:31:59 +0200 评论回答 Diagonal Fractions?

Numeric fractions are easy with unicode: ³⁄₁₆

2020-10-06 11:29:17 +0200 评论问题 How to use Dirac bra-ket notation

Objection: the accepted “right” answer was to install an extension, while there is a solution without need for any exten

2020-10-06 11:24:37 +0200 回答问题 average number of days

Isn't the average number of days the maximum date minus the minimum date divided by the count of dates reduced by one? F

2020-10-05 12:32:57 +0200 评论回答 How to use Dirac bra-ket notation

This is the way to go, as Lupp says; left langle 0 mline right none is bra 0 and left none mline 1 right rangle is ket 1