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Regex how to match an optional character

...e letter optional. {1} is redundant. (Of course you could also write [A-Z]{0,1} which would mean the same, but that's what the ? is there for.) You could improve your regex to ^([0-9]{5})+\s+([A-Z]?)\s+([A-Z])([0-9]{3})([0-9]{3})([A-Z]{3})([A-Z]{3})\s+([A-Z])[0-9]{3}([0-9]{4})([0-9]{2})([0-9]{2}) ...
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Visual Studio build fails: unable to copy exe-file from obj\debug to bin\debug

...This is going to sound stupid, but I tried all these solutions, running VS2010 on Windows 7. None of them worked except the renaming and building, which was VERY tedious to say the least. Eventually, I tracked down the culprit, and I find it hard to believe. But I was using the following code in Ass...
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Python: print a generator expression?

...ator expression is a "naked" for expression. Like so: x*x for x in range(10) Now, you can't stick that on a line by itself, you'll get a syntax error. But you can put parenthesis around it. >>> (x*x for x in range(10)) <generator object <genexpr> at 0xb7485464> This is som...
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?

...s the other way around: def foo(a, b, c): print(a, b, c) obj = {'b':10, 'c':'lee'} foo(100,**obj) # 100 10 lee Another usage of the *l idiom is to unpack argument lists when calling a function. def foo(bar, lee): print(bar, lee) l = [1,2] foo(*l) # 1 2 In Python 3 it is possible to...
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Imply bit with constant 1 or 0 in SQL Server

Is it possible to express 1 or 0 as a bit when used as a field value in a select statement? 8 Answers ...
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SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu

...n other formats like mm/dd/yyyy (usually works). Specifying the date as 30/12/2013 resulted in the error for me. However, specifying it as mm/dd/yyyy format worked. If you need to convert your input the you can try looking into the CONVERT method. Syntax is CONVERT(VARCHAR,@your_date_Value,103...
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Best way to make Java's modulus behave like it should with negative numbers?

...the negative values of a, since (a % b) is a negative value between -b and 0, (a % b + b) is necessarily lower than b and positive. The last modulo is there in case a was positive to begin with, since if a is positive (a % b + b) would become larger than b. Therefore, (a % b + b) % b turns it into s...
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Better way to sum a property value in an array

...ay { sum(key) { return this.reduce((a, b) => a + (b[key] || 0), 0); } } const traveler = new TravellerCollection(...[ { description: 'Senior', Amount: 50}, { description: 'Senior', Amount: 50}, { description: 'Adult', Amount: 75}, { description: 'Child', Amount...
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Finding quaternion representing the rotation from one vector to another

... answered Jul 23 '09 at 14:04 Polaris878Polaris878 31.6k3535 gold badges105105 silver badges139139 bronze badges ...
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How to remove unwanted space between rows and columns in table?

...CSS code: (From here) /* http://meyerweb.com/eric/tools/css/reset/ v2.0 | 20110126 License: none (public domain) */ html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp,...