how to choose Archives - Simon Technology Blog

Regular expression: How to choose something that matches the beginning or end, but is not both?

I have this situation: the regular expression is like this:
^ b? A b? $

So b can match at the beginning of the string 0 or 1, and A must match one or more times. Again b can match 0 or 1 tim

How to choose a suitable operating system, Windows, Mac or Linux? Author: We are all working hard

Introduction: Computers are gradually inseparable from our lives, but how to choose the best

I tried to select only today’s records from the database table.

Currently I use

SELECT * FROM `table` WHERE (`timestamp`> DATE_SUB(now(), INTERVAL 1 DAY)); But it needs the results of t