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a switch bug in swift? - "Switch must be exhaustive, consider adding a default clause."

I am positive that the following swift code has covered all possibilities, but Xcode keeps telling me that, "Switch ... test(true, true, true) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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a php function inside a mysql query?

I have this query $query = "INSERT INTO $new_db.wp_users (user_login, user_pass, user_nicename) select user_email, md5 ... failing ...any ideas See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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a Regex for extracting sentence from a paragraph in python

I'm trying to extract a sentence from a paragraph using regular expressions in python. Usually the code that ... with the regular expression? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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a vector to an upper Triangle matrix by row in R

I have a vector say a = c(1,2,3,4,5,6) I would like to organize them into the elements into ... creating a triangular matrix Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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a working non-recursive floodfill algorithm written in C?

I've been trying to find a working floodfill algorithm. Of the many algorithms I've tried only the ' ... can disentangle easily enough)? See Question&Answers more detail:os...

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

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a constructor as a delegate - is it possible in C#?

I have a class like below: class Foo { public Foo(int x) { ... } } and I need to pass to a certain ... responses for 3.0+ are welcome as well. See Question&Answers more detail:os...

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

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