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This article introduces the relevant knowledge of "what is the grouping structure of C#". In the operation of actual cases, many people will encounter such a dilemma. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Grouping construction

The grouping construction describes the subexpression of the regular expression and is usually used to capture the substring of the input string.

The following table lists the grouping construction:

The grouping construction describes pattern matching (subexpression) capturing matching subexpressions and assigning them to a zero-based sequence number. (\ w)\ 1 "ee" (?) in "deep"

Subexpression) captures matching subexpressions into a named group. (?

\ W)\ k

"ee" in "deep" (?

Subexpression) defines the balance group definition. ((? 'Open'\) [^\ (\)] *) + ((?' Close-Open'\)) [^\ (\)] *) * (? (Open) (?)) $"((1-3) * (3-1))" (?: subexpression) in "(1-3) * (3-1))". The "WriteLine" (? imnsx-imnsx:subexpression) in Write (?: Line)? "Console.WriteLine ()" applies or disables the options specified in subexpression. The zero widths of "A12xl" and "A12XL" (? = subexpression) in A\ d {2} (? I:\ W +)\ b "A12xl A12XL a12xl" are predicting advance assertions. \ W + (? =\.) "He is The dog ran. The sun is out." "is", "ran" and "out" (?! Subexpression) zero width negative prediction antecedent. \ b (?! un)\ w +\ b "sure" and "used" in "unsure sure unity used" (? Make an assertion after a negative review of zero width. The "man" (? > subexpression) subexpression in "Hi woman Hi man" is not backtracking (also known as "greed"). [13579] (? > AbeliB+) the contents of "1ABB", "3ABB" and "5AB" and "what is the grouping structure of C#" in "1ABB 3ABBC 5AB 5AC" are introduced here. Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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