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C# code to validate email address

...nternally: const string pattern = @"^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x...
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Detect if stdin is a terminal or pipe?

... is a file or a pipe\n"); (On windows they're prefixed with underscores: _isatty, _fileno) share | improve this answer | follow | ...
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How to get NSDate day, month and year in integer format?

...nthYear If you wanted to e.g. get only the the year you can write: let (_, _, year) = date.dayMonthYear share | improve this answer | follow | ...
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Maximum number of records in a MySQL database table

...tables or partitioning and put old data in old tables by year such as users_2011_jan, users_2011_feb or use numbers for the month. Then change your programming to work with this model. Maybe make a new table with less information to summarize the data in less columns and then only refer to the bigge...
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When should I use perror(“…”) and fprintf(stderr, “…”)?

...should use fprintf(stderr, fmt, ...). For example, strtol will return LONG_MAX or LONG_MIN if a string is out of range and set errno to ERANGE. So if strtol fails due to out of range, I would use perror. – freeboy1015 Aug 24 '12 at 2:22 ...
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SqlException from Entity Framework - New transaction is not allowed because there are other threads

... the IList<T>. Example: IList<Client> clientList = from a in _dbFeed.Client.Include("Auto") select a; foreach (RivWorks.Model.NegotiationAutos.Client client in clientList) { var companyFeedDetailList = from a in _dbRiv.AutoNegotiationDetails where a.ClientID == client.ClientID selec...
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iOS 5 Best Practice (Release/retain?)

...time compatibility glue code to your app. This works for everything except __weak variables, which require more support than the compatibility code can provide. ARC on iOS 4 is simpler than non-ARC code, but it's not as simple as ARC on iOS 5." By the way, the WWDC schedule app was written with AR...
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Why do we need C Unions?

...le types together: enum Type { INTS, FLOATS, DOUBLE }; struct S { Type s_type; union { int s_ints[2]; float s_floats[2]; double s_double; }; }; void do_something(struct S *s) { switch(s->s_type) { case INTS: // do something with s->s_ints break; case F...
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How to sort objects by multiple keys in Python?

...eturn sorted(items, cmp=comparer) You can call it like this: b = [{u'TOT_PTS_Misc': u'Utley, Alex', u'Total_Points': 96.0}, {u'TOT_PTS_Misc': u'Russo, Brandon', u'Total_Points': 96.0}, {u'TOT_PTS_Misc': u'Chappell, Justin', u'Total_Points': 96.0}, {u'TOT_PTS_Misc': u'Foster, Toney'...
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What does “./bin/www” do in Express 4.x?

...ents app.set('port', process.env.PORT || 3000); app.set('views', path.join(__dirname, 'views')); app.set('view engine', 'jade'); app.use(express.favicon()); app.use(express.logger('dev')); app.use(express.compress()); app.use(express.json()); app.use(express.urlencoded()); app.use(express.methodOver...