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How do I detect whether a Python variable is a function?

... If this is for Python 2.x or for Python 3.2+, you can also use callable(). It used to be deprecated, but is now undeprecated, so you can use it again. You can read the discussion here: http://bugs.python.org/issue10518. You can do this with: callable(obj) If this is for Python 3.x but ...
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Sublime Text 2 keyboard shortcut to open file in specified browser (e.g. Chrome)

... I'm not really sure this question is approprate here, but you can add a new "Build System" under Tools -> Build System -> New Build System... As with all configuration in Sublime Text its just JSON, so it should be pretty straig...
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How do I preview emails in Rails?

...iables the template expects. This could be done with fixtures, but I typically prefer to just grab some pseudo-random real data. Remember - this is NOT a unit test - this is purely a development aid. It doesn't need to produce the same result every single time - in fact - it's probably better if ...
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Rename multiple files in a directory in Python [duplicate]

...e script itself. Instead of using . as the dir, you could make a variable called dir and use that, then prepend dir to the filename. – styfle May 18 '11 at 5:53 18 ...
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Empty set literal?

... Actually, set literals have been backported to Python 2.7, so they are not only available strictly in Python 3. – Jim Brissom May 25 '11 at 20:56 ...
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How do I syntax check a Bash script without running it?

...is documented, and as the beginning of the manpage states, bash interprets all single-character options that set does. – ephemient Oct 5 '08 at 20:55 24 ...
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UITextView that expands to text using auto layout

I have a view that is laid out completely using auto layout programmatically. I have a UITextView in the middle of the view with items above and below it. Everything works fine, but I want to be able to expand UITextView as text is added. This should push everything below it down as it expands. ...
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Position a CSS background image x pixels from the right?

...ected as the "Correct answer". According to MDN it's supported in IE9+ and all other browsers, which is great! developer.mozilla.org/en-US/docs/Web/CSS/… – fregante Sep 27 '13 at 0:16 ...
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Is “else if” a single keyword?

...er to Can you start a class name with a numeric digit? that spaces are not allowed in identifiers and so therefore else if can not be a single keyword but must be two separate keywords. share | impr...
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Getting MAC Address

... says that it will return a random long if it fails to detect the mac: "If all attempts to obtain the hardware address fail, we choose a random 48-bit number with its eighth bit set to 1 as recommended in RFC 4122." So check that eighth bit! – deinonychusaur Fe...