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How can I format a nullable DateTime with ToString()?

...alue property, and not on the dt2 object itself. DateTime? dt2 = DateTime.Now; Console.WriteLine(dt2.HasValue ? dt2.Value.ToString("yyyy-MM-dd hh:mm:ss") : "[N/A]"); share | improve this answer ...
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How to convert a DOM node list to an array in Javascript?

...obj[i]; } return array; } UPDATE: As other answers suggest, you can now can use in modern environments the spread syntax or the Array.from method: const array = [ ...nodeList ] // or Array.from(nodeList) But thinking about it, I guess the most common use case to convert a NodeList to an Ar...
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Understanding Magento Block and Block Type

... = "Block is called"; return $data; } } and now come to your layout xml page: <block type="mymodule/data" name="xyz" template="example/view.phtml"> here mydata is frontend name and now come to your template's template/example/view.phtml page here you ca...
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Change Bootstrap input focus blue glow

Does anyone know the how to change Bootstrap's input:focus ? The blue glow that shows up when you click on an input field? ...
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Is there a command like “watch” or “inotifywait” on the Mac?

I want to watch a folder on my Mac (Snow Leopard) and then execute a script (giving it the filename of what was just moved into a folder (as a parameter... x.sh "filename")). ...
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What do

...it as a proof that A is String--the argument itself isn't important, only knowing that it exists. [edit: well, technically it actually is important because it represents an implicit conversion from A to String, which is what allows you to call a.length and not have the compiler yell at you] Now I c...
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Homebrew install specific version of formula?

...Library/Formula/postgresql.rb $ brew install postgresql # … installing Now that the older postgresql version is installed, we can re-install the latest formula in order to keep our repository clean: $ git checkout -- Library/Formula/postgresql.rb brew switch is your friend to change between t...
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Checkout remote branch using git svn

I have checked out a svn repository using git svn. Now I need to checkout one of the branches and track it. Which is the best way to do it? ...
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What is the reason behind cbegin/cend?

...ref = vec; std::for_each(vec_ref.begin(), vec_ref.end(), SomeFunctor()); Now, we introduce cbegin/cend: std::for_each(vec.cbegin(), vec.cend(), SomeFunctor()); Now, we have syntactic assurances that SomeFunctor cannot modify the elements of the vector (without a const-cast, of course). We expli...
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?

...think of is nested if's: if (cond1) if (cond2) doSomething(); Now, assume you now want to doSomethingElse() when cond1 is not met (new feature). So: if (cond1) if (cond2) doSomething(); else doSomethingElse(); which is obviously wrong, since the else associates with the ...