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psql: could not connect to server: No such file or directory (Mac OS X)

...master has exited.). SOLUTION: This fixed the issue--I deleted this file, and then everything worked! /usr/local/var/postgres/postmaster.pid -- and here is how I figured out why this needed to be deleted. I used the following command to see if there were any PG processes running. for me ther...
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Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)

... important that you use process.env.PORT and not process.env.port. – gprasant Feb 25 '14 at 14:15 ...
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Define css class in django Forms

... Yet another solution that doesn't require changes in python code and so is better for designers and one-off presentational changes: django-widget-tweaks. Hope somebody will find it useful. share | ...
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socket.io and session?

...at I am thinking about this.... why not just set the store for the cookies and the store for the socket to the same store? – James Feb 2 '13 at 19:59 add a comment ...
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“is” operator behaves unexpectedly with integers

...entation keeps an array of integer objects for all integers between -5 and 256, when you create an int in that range you actually just get back a reference to the existing object. So it should be possible to change the value of 1. I suspect the behaviour of Python in this case is und...
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Error in finding last used cell in Excel with VBA

...is will also cover the best practices to follow when finding the last row. And hence I will keep on updating it whenever I come across a new scenario/information. Unreliable ways of finding the last row Some of the most common ways of finding last row which are highly unreliable and hence should...
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Difference between encoding and encryption

What is the difference between encoding and encryption? 10 Answers 10 ...
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Meaning of $? (dollar question mark) in shell scripts

... This is the exit status of the last executed command. For example the command true always returns a status of 0 and false always returns a status of 1: true echo $? # echoes 0 false echo $? # echoes 1 From the manual: (acessible by calling man bash in your shell) $?...
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Convert date to datetime in Python

...at it does is first retrieving the minimum value representable by datetime and then getting its time component. Incidentally, datetime.min = datetime(MINYEAR, 1, 1, tzinfo=None) and has a time of 00:00:00. However, I think it is cleaner to explicitly create a 00:00:00 time either through time.min or...
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Should I use tag for icons instead of ? [closed]

Facebook's HTML and Twitter Bootstrap HTML (before v3) both use the <i> tag to display icons. 7 Answers ...