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Structural regular expressions

rex_compile()
Compile a Glycan Regular Expression
rex_detect()
Detect Structural Matches in Glycans
rex_count()
Count Structural Matches in Glycans
rex_extract()
Extract the First Structural Match
rex_extract_all()
Extract All Structural Matches
rex_match()
Extract the First Structural Match and Named Captures
rex_match_all()
Extract All Structural Matches and Named Captures
rex_locate()
Locate the First Structural Match
rex_locate_all()
Locate All Structural Matches
rex_which()
Find Indices of Glycans with Structural Matches
rex_subset()
Subset Glycans by Structural Matches