regex - Qt 4.8.4 MAC Address QRegExp -

-

i'm trying qt match mac address ( 1a:2b:3c:4d:5e:6f ) using qregexp. can't seem match - doing wrong?

i forcing try , match string:

"48:c1:ac:55:86:f3"

here attempts:

// define regex match mac address //qregexp regexmacaddress("[0-9a-f]{1,2}[\.:-]){5}([0-9a-f]{1,2}");  //qregexp regexmacaddress("[0-9a-f]{0,2}:[0-9a-f]{0,2}:[0-9a-f]{0,2}:[0-9a-f]{0,2}:[0-9a-f]{0,2}:[0-9a-f]{0,2}");  //regexmacaddress.setpatternsyntax(qregexp::regexp);  // ensure hexadecimal characters upper case hwaddress = hwaddress.toupper();  qdebug() << "string match: " << hwaddress << "matched it: " << regexmacaddress.indexin(hwaddress) << " exact match: " << regexmacaddress.exactmatch(hwaddress);  // check mac address format if ( regexmacaddress.indexin(hwaddress) == -1 ) {

in first example opening bracket missing , \. incorrect (read help explanations), in both a-f matches nothing, due 'a' > 'f'.

the correct answer can find in comment of kenrogers, i'll duplicate you:

([0-9a-f]{2}[:-]){5}([0-9a-f]{2})

if want match . should use:

([0-9a-f]{2}[:-\\.]){5}([0-9a-f]{2})

if want match lower case characters, should use:

([0-9a-fa-f]{2}[:-\\.]){5}([0-9a-fa-f]{2})

Comments

Post a Comment

Popular posts from this blog

java - Jmockit String final length method mocking Issue -

-
using jmockit 1.2 jar, trying mock string's length method getting unexpected invocation exception: failed: test java.lang.illegalstateexception: missing invocation mocked type @ point; please make sure such invocations appear after declaration of suitable mock field or parameter @ stringdemo.testa$1.<init>(testa.java:17) @ stringdemo.testa.test(testa.java:13) i using testng: @test public void test() throws exception { new expectations() { @mocked("length") string astring; { astring.length(); result = 2; } }; system.out.println(a.showa("test")); } } actual class a: public class { public static int showa(string str){ int a= str.length(); return a; } } this wrong way of recording expected results. shouldn't mock , record string's length() method, record showa() instead. here solution @suppresswarnings("unused...
Read more

What is the difference between data design and data model(ERD) -

-
i have google question , find answer in day. know, data design many many table have list column,and mark pk , fk. why er-diagram have find this? data design process of designing database. main output of data design detailed logical data model of database. some people data design includes of needed logical , physical design choices , physical storage parameters needed generate design in data definition language. technically, database analysis, database analysts (dbas) trained do. while person can both data design , database analysis, these 2 different tasks. data design models data. database analysis takes model , applies 1 or more database engines (relational, hierarchical, nosql). a logical data model 1 of main outputs of data design. data model represented entity relationship diagram, or er diagram.
Read more

ios - Can NSManagedObject conform to NSCoding -

-
i need transfer single object across device. right converting nsmanagedobject dictionary , archiving , sending nsdata. upon receiving unarchiving it. transfer nsmanagedobject archiving , unarchiving instead of creating intermediate data object. @interface test : nsmanagedobject<nscoding> @property (nonatomic, retain) nsstring * title; @end @implementation test @dynamic title; - (id)initwithcoder:(nscoder *)coder { self = [super init]; if (self) { self.title = [coder decodeobjectforkey:@"title"]; //<crash } return self; } - (void)encodewithcoder:(nscoder *)coder { [coder encodeobject:self.title forkey:@"title"]; } @end nsdata *archivedobjects = [nskeyedarchiver archiveddatawithrootobject:testobj]; nsdata *objectsdata = archivedobjects; if ([objectsdata length] > 0) { nsarray *objects = [nskeyedunarchiver unarchiveobjectwithdata:objectsdata]; } the problem above code is. crashes @ self.title in initwithcoder sa...
Read more