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parent child - Differences between // and /descendant in XPath selecting multiple children

I can't clearly understand the differences between using //element and /descendant::element when selecting multiple ... doesn't allow it. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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parent child - What happens to a SIGINT (^C) when sent to a perl script containing children?

I have a Perl script that forks. Each fork runs an external program, parses the output, and converts the output ... respect to forking in Perl. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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