How to verify that, using regex, all characters in a string are digits? -

-

how can verify every character in string 0-9 digit? example: 1343151234234 valid 2342343abc34234 not valid. thank you.

^\d+$

using 'singleline' option (in c# regexoptions.singleline).


Comments

Post a Comment

Popular posts from this blog

sql server - NHibernate incorrectly creating ManyToMany table - Cannot define PRIMARY KEY constraint on nullable column error -

-
i have started implementing iset 's instead of ilist 's in project better reflects collection's have. this has thrown odd error in creation of 1 table. error i'm getting is. cannot define primary key constraint on nullable column in table 'useraddressassignments'. i have many many relationship between users , addresses. public class user : baseentity { public virtual system.guid userguid { get; set; } public virtual string username { get; set; } public virtual company company { get; set; } public virtual iesi.collections.generic.iset<address> useraddressassignments { get; set; } } the sql generating lookup column causing issue , shown below. userid column being nullable causing problem. create table useraddressassignments ( useraddressassignmentid int not null, addressid int identity not null, userid int null, primary key (userid, addressid) ) the odd part here have identical relationship between company...
Read more

All overlapping substrings matching a java regex -

-
is there api method returns (possibly overlapping) substrings match regular expression? for example, have text string: string t = 04/31 412-555-1235; , , have pattern: pattern p = new pattern("\\d\\d+"); matches strings of 2 or more characters. the matches are: 04, 31, 412, 555, 1235. how overlapping matches? i want code return: 04, 31, 41, 412, 12, 55, 555, 55, 12, 123, 1235, 23, 235, 35. theoretically should possible -- there obvious o(n^2) algorithm enumerates , checks substrings against pattern. edit rather enumerating substrings, safer use region(int start, int end) method in matcher . checking pattern against separate, extracted substring might change result of match (e.g. if there non-capturing group or word boundary check @ start/end of pattern). edit 2 actually, it's unclear whether region() expect zero-width matches. specification vague, , experiments yield disappointing results. for example: string line = "xx90xx"; strin...
Read more

c++ - Using OpenSSL in a multi-threaded application -

-
i have been writing soap client application in c++ on ubuntu using openssl https transport , pthreads threading. have number of threads - 1 central data acquisition thread periodically gets worker threads make soap requests via shared mutex protected queues. reading documentation openssl found is openssl thread-safe? in openssl faq describes mechanisms required ensure thread safety when using openssl. implemented , works fine. the reason question conceptual difficulty really. thinking implementing same functionality application has already, instead of using threads, create 2 seperate applications : 1 worker thread (of multiple copies running) , main data acquisition thread. use tcp sockets communicate between 2 rather mutex protected queues. may bad idea not important - confusing me would have implement same functions required ensure openssl thread safety in second approach or not? my guess not have , treated independent (indeed surely must many applications use openssl) re...
Read more