Sorry for unclear description, my English is not good. My problem is that I want to decode a string, and this string has nested content delimited by {}. For example: The string: {any string0{any string 00{any string 000....}}}{any string1}any string. The result I want to get: array[0] = {any string0{any string 00{any string 000....
I'd like to do something like this: re.findall(r"(?:(?:\A|\W)" + 'Hello' + r"(?:\Z|\W))", 'hello world',re.I) And have re.I be dynamic, so I can do case-sensitive or insensitive comparisons on the fly. This works but is undocumented: re.findall(r"(?:(?:\A|\W)" + 'Hello' + r"(?:\Z|\W))", 'hello world',1) To set it to sensitive. Is...
Hi, I m trying to match beignning of words in a mysql column that stores strings as varchar. Unfortunately, REGEXP does not seem to work for UTF-8 strings as mentioned here So, select * from names where name REGEXP '[[:<:]]Aandre'; does not work if I have name like Foobar Aándreas However, select * from names where name li...
I'm doing something in Java that requires input to be matched against the pattern ^[1-5]$. I should have a while loop looping through each line of input, checking it against the pattern, and outputting an error message if it does not. Sudo code: while (regex_match(/^[^1-5]$/,inputLine)) { print ("Please enter a number betwee...
Hi Guys... Hope you help me with this one.... I have a main question which is ''how to judge whether a regular expression will be accepted by NFA and/or DFA? For eg. My question says that which of the regular expressions are equivalent? explain... 1.(a+b)*b(a+b)*b(a+b)* 2.a*ba*ba* 3.a*ba*b(a+b)* do we have to draw the NFA and DFA an...
In my snippet below, the non-capturing group "(?:aaa)" should be ignored in matching result, so the result should be "_bbb" only. However, I get "aaa_bbb" in matching result; only when I specify group(2) does it show "_bbb". import re string1 = "aaa_bbb" print(re.match(r"(?:aaa)(_bbb)", string1).group()) >>> aaa_bbb ...
Let L= { w in (0+1)* | w has even number of 1s}, i.e. L is the set of all bit strings with even number of 1s. Which one of the regular expressions below represents L? A) (0*10*1)* B) 0*(10*10*)* C) 0*(10*1)* 0* D) 0*1(10*1)* 10* According to me option D is never correct because it does not represent the bit string with zero 1s. But ...
I am using regular expressions for matching only digits, minimum 10 digits, maximum 14. I tried: ^[0-9] ...
I write regular expression for alphanumerics, but it is not taking space. I want space (whitespace between characters). I write like this: ^[a-zA-Z0-9_]*$ ...
This question is a combination of regex practice and unit testing practice. Regex part I authored this problem separateThousands for personal practice: Given a number as a string, introduce commas to separate thousands. The number may contain an optional minus sign, and an optional decimal part. There will not be any superfluous le...
How do I check if a String contains only letters in java? I want to write an if statement that will return false if there is a white space, a number, a symbol or anything else other than a-z A-Z. My string must contain ONLY letters. I thought I could do it this way, but I'm doing it wrong: if( ereg("[a-zA-Z]+", $myString)) return tr...
i want to delete the following type of expressions from my script. <a any text here>nothing or space here</a> i can do it by three functions, but i think there is a way shorter. could you help me? thanks in advance ...
i need to much the sentense, if it doesn't contain some words i wrote it like this ^([^news|home|rules|contacts|month_films|archive|ratings])$ but it doesn't work. could you tell me why? thanks ...
how can i much the sentense, if it doesn't contain none of {word1,word2,word3} where i must put ^ symbol? i think it must looks like this ^([^word1|word2|word3])$ but it doesn't work. could you help? thanks ...
Something like this: http://perl.plover.com/yak/regex/samples/slide083.html In other words I want to match successfully on { { foo } { bar} } but not on { { foo } . I see it's possible in perl, and in .NET. Is it possible in emacs regex? ...
Hi folks, I have a little program allowing users to type-in some regular expressions. afterwards i like to check if this input is a valid regex or not. I'm wondering if there is a build-in method in Java, but could not find such jet. Can you give me some advice? Best regards Phil ...
in twitter when you write @moustafa will change to <a href='user/moustafa'>@moustafa</a> now i want make the same thing when write @moustafa + space its change @moustafa only ...
I'm looking to find the equivalent in C# for the equivalent of this regex. Java: public static final String expression = "[\\s\\p{Punct}]"; {Punct} is a reserved character class in Java but I'm not sure how to create the equivalent expression so that the .net regex engine doesn't barf. ...
I am trying to pull dynamics from a load that I run using bash. I have gotten to a point where I get the string I want, now from this I want to pull certain information that can vary. The string that gets returned is as follows: Records: 2910 Deleted: 0 Skipped: 0 Warnings: 0 Each of the number can and will vary in length, but the o...
How would I make a regular expression to match the character '<' not followed by ('a' or 'em' or 'strong') so <hello and <string would match, but <strong wouldn't. UPDATE: Btw, the language I'm using is javascript ...