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What characters are allowed in an email address?

... not appear consecutively unless quoted (e.g. John..Doe@example.com is not allowed but "John..Doe"@example.com is allowed); space and "(),:;<>@[\] characters are allowed with restrictions (they are only allowed inside a quoted string, as described in the paragraph below, and in addition, a b...
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Best way to format integer as string with leading zeros? [duplicate]

... @Zelphir you can dynamically create the formatting string, [('{{0:0{0:d}d}}').format(len(my_list)).format(k) for k in my_list] – Mark Aug 28 '15 at 8:31 ...
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How to manually expand a special variable (ex: ~ tilde) in bash

... Using eval is a horrible suggestion, it's really bad that it gets so many upvotes. You will run into all sorts of problems when the variable's value contains shell meta characters. – user2719058 Aug 31 '14 at 19:47 ...
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What breaking changes are introduced in C++11?

...nity, whereas C++0x always rounds the result toward 0. (admittedly not really a compatibility problem for most people). Valid C++ 2003 code that uses the keyword auto as a storage class specifier may be invalid in C++0x. Narrowing conversions cause incompatibilities with C++03. For ex...
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How to forward declare a template class in namespace std?

...rs. Of course, I know that there are more template params for std::list (allocator I think). But, that is beside the point. Do I have to know the full template declaration of a template class to be able to forward declare it? ...
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Multi-Line Comments in Ruby?

.....is kinda ugly and creates a String instance, but I know one guy with a Smalltalk background, who does this." puts "Hello world!" ## # most # people # do # this __END__ But all forgot there is another option. Only at the end of a file, of course. This is how it looks (via screenshot) - othe...
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pyplot axes labels for subplots

... be created before ax1 and ax2, otherwise the big plot will cover up the small plots. – 1'' Nov 29 '14 at 21:06 ax.gri...
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How do I use extern to share variables between source files?

...ler is informed that a variable exists (and this is its type); it does not allocate the storage for the variable at that point. A variable is defined when the compiler allocates the storage for the variable. You may declare a variable multiple times (though once is sufficient); you may only defin...
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How to remove the first and the last character of a string

... Here you go var yourString = "/installers/"; var result = yourString.substring(1, yourString.length-1); console.log(result); Or you can use .slice as suggested by Ankit Gupta var yourString = "/installers/services/"; var result = yourString....
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Get element inside element by class and ID - JavaScript

...er than worrying about browser compatibility yourself (let someone else do all the work). If you want just a library to do that, then Sizzle will work great. In Sizzle, this would be be done like this: Sizzle("#foo .bar")[0].innerHTML = "Goodbye world!"; jQuery has the Sizzle library built-in...