Cradle provides support for regular expressions, regular expressions are a means to find variable text in places such as:<\/p>\n
For instance, regular expressions<\/em> (regexes) can be used in queries to find all items in which any frame,<\/em> or a specific frame<\/em>, or any of a list of frames<\/em>, contains text matching the regular expression<\/em> that you are searching for. For example, if you wanted to find all items containing sequences of capital letters followed by numbers, then the regular expression would be:<\/p>\n [A-Z]+[0-9]+<\/p>\n Some characters have special meanings within regexes these characters are:<\/p>\n Finished\\?<\/strong> matches “Finished?<\/strong>” If you want to use any of these as literal characters<\/em> you can escape special characters<\/em> with \\<\/strong> to give them their literal character<\/em> meaning.<\/p>\n If you want to match 1+2=3<\/strong>, you need to use a backslash (\\<\/strong>) to escape the +<\/strong> as this character has a special meaning (Match one or more of the previous). For further information on using regexes in Cradle see our online help<\/a>.<\/p>\n <\/p>\n
\nWhilst you are here, take a look at Why is Requirements Management Essential for your Business?<\/a><\/h4>\n
\nSpecial Characters<\/h2>\n
\n\n
\n Char<\/b><\/td>\n Description<\/b><\/td>\n Meaning<\/b><\/td>\n<\/tr>\n \n \\<\/td>\n Backslash<\/td>\n Used to escape a special character<\/td>\n<\/tr>\n \n ^<\/td>\n Caret<\/td>\n Beginning of a string<\/td>\n<\/tr>\n \n $<\/td>\n Dollar sign<\/td>\n End of a string<\/td>\n<\/tr>\n \n .<\/td>\n Period or dot<\/td>\n Matches any single character<\/td>\n<\/tr>\n \n |<\/td>\n Vertical bar or pipe symbol<\/td>\n Matches previous OR next character\/group<\/td>\n<\/tr>\n \n ?<\/td>\n Question mark<\/td>\n Match zero or one of the previous<\/td>\n<\/tr>\n \n *<\/td>\n Asterisk or star<\/td>\n Match zero, one or more of the previous<\/td>\n<\/tr>\n \n +<\/td>\n Plus sign<\/td>\n Match one or more of the previous<\/td>\n<\/tr>\n \n ( )<\/td>\n Opening and closing parenthesis<\/td>\n Group characters<\/td>\n<\/tr>\n \n [ ]<\/td>\n Opening and closing square bracket<\/td>\n Matches a range of characters<\/td>\n<\/tr>\n \n { }<\/td>\n Opening and closing curly brace<\/td>\n Matches a specified number of occurrences of the previous<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Examples<\/h3>\n
\n^http<\/strong> matches strings that begin with http<\/strong>
\n[^0-9]<\/strong> matches any character<\/strong> not 0-9<\/strong>
\ning$<\/strong> matches “exciting<\/strong>” but not “ingenious<\/strong>”
\ngr.y<\/strong> matches “gray<\/strong>“, “grey<\/strong>”
\nRed|Yellow<\/strong> matches “Red<\/strong>” or “Yellow<\/strong>”
\ncolou?r<\/strong> matches colour<\/strong> and color<\/strong>
\nAh?<\/strong> matches “Al<\/strong>” or “Ah<\/strong>”
\nAh*<\/strong> matches “Ahhhhh<\/strong>” or “A<\/strong>”
\nAh+<\/strong> matches “Ah<\/strong>” or “Ahhh<\/strong>” but not “A<\/strong>”
\n[cbf]ar<\/strong> matches “car<\/strong>“, “bar<\/strong>“, or “far<\/strong>”
\n[a-zA-Z]<\/strong> matches ascii letters a-z<\/strong> (uppercase and lower case)<\/p>\nUsing Special Characters as Literal Characters<\/h2>\n
Example<\/h3>\n
\nTo match the 1+2=3<\/strong> as one string you would need to use the regex<\/em> 1\\+2=3<\/strong><\/p>\n