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Merge / convert multiple PDF files into one PDF
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javascript: Clear all timeouts?
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What is a Context Free Grammar?
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Language Theory is related to Theory of Computation. Which is the more philosophical side of Computer Science, about deciding which programs are possible, or which will ever be possible to write, and what type of problems is it impossible to write an algorithm to solve.
A regular expressio...
How to securely save username/password (local)?
...lso known as Password Based Key Derivation Function 2 or PBKDF2). This is more secure than using encryption like Triple DES or AES because there is no practical way to go from the result of RFC2898DerivedBytes back to the password. You can only go from a password to the result. See Is it ok to use ...
How do I set the maximum line length in PyCharm?
...stency with this style guide is important. Consistency within a project is more important. Consistency within one module or function is most important. But most importantly: know when to be inconsistent -- sometimes the style guide just doesn't apply.
– Krøllebølle
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Differences between distribute, distutils, setuptools and distutils2?
...s merged back into Setuptools 0.7, so you don't need to use Distribute any more. In fact, the version on Pypi is just a compatibility layer that installs Setuptools.
distutils2 was an attempt to take the best of distutils, setuptools and distribute and become the standard tool included in Python's s...
Heroku free account limited?
... Actually the bandwidth is 2TB/month (soft): policy.heroku.com/aup More: Request Length: 30 seconds - Hard, Dyno RAM usage: 512MB - Hard
– K Z
Apr 15 '12 at 5:10
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Nginx not picking up site in sites-enabled?
... May be a problem with an incorrect path in the relative link more than it being a relative link at all. For example, if your link doesn't start with ../ to traverse up one directory, then enter sites-available. If you can cat the symlink and get output, Nginx should read it also as @Ha...
When do we need curly braces around shell variables?
... in the variable md5sum, now accessible using ${md5sum}. Also, +1 and many more in spirit to OP for mentioning that it's good practice to be explicit!
– L0j1k
Jan 6 '15 at 11:31
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Calling a parent window function from an iframe
... I prefer using this over others. Especially because it makes more sense to use iframes on cross origin docs (although programmers do exploit iframes more often than not) and given the wide support for this function on browsers.
– Fr0zenFyr
May 6 '...