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How can I store my users' passwords safely?
...upal 5 & 6)
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The good thing is that you do not need to worry about the details, those details have been programmed by people with experience and reviewed by many folks on the internet.
For more information on password storage schemes, read Jeff`s blog post: You're Probably Storing Passw...
What do all of Scala's symbolic operators mean?
...ethod name). Now _ is a special symbol in Scala. There are several posts about it, for example this blog entry all use cases. Here it is an anonymous function short cut, that is it a shortcut for a function that takes one argument and invokes the method _ on it. Now _ is not a valid method, so most ...
How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
...use quick reload hacks
Unicode Zen in Python 2.x - The Long Version
Without seeing the source it's difficult to know the root cause, so I'll have to speak generally.
UnicodeDecodeError: 'ascii' codec can't decode byte generally happens when you try to convert a Python 2.x str that contains non-A...
Is there any advantage of using map over unordered_map in case of trivial keys?
A recent talk about unordered_map in C++ made me realize that I should use unordered_map for most cases where I used map before, because of the efficiency of lookup ( amortized O(1) vs. O(log n) ). Most times I use a map, I use either int or std::string as the key type; hence, I've got...
What's the difference between using CGFloat and float?
...d to make it easier to write code that works on both 32-bit and 64-bit without modification. However, if all you need is float precision within your own code, you can still use float if you like — it will reduce your memory footprint somewhat. Same goes for integer values.
I suggest you invest t...
When should Flask.g be used?
...request context to the app context in Flask 0.10, which made me confused about the intended use of g .
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Sanitizing strings to make them URL and filename safe?
...ong other things includes methods for safe encoding and decoding input and output in your application.
The Encoder interface provides:
canonicalize (string $input, [bool $strict = true])
decodeFromBase64 (string $input)
decodeFromURL (string $input)
encodeForBase64 (string $input, [bool $wrap = f...
How do I work with a git repository within another repository?
...ct uses. git submodules are great, but you need to experiment and learn about them.
With great power comes the great chance to get bitten in the rump.
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Version vs build in Xcode
...ave been using it with Xcode 3. I'm not sure on what level you're asking about the Version/Build difference, so I'll answer it philosophically.
There are all sorts of schemes, but a popular one is:
{MajorVersion}.{MinorVersion}.{Revision}
Major version - Major changes, redesigns, and functionali...
Is there a performance difference between i++ and ++i in C++?
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I'd +1 IF the answer mentioned something about classes that hold pointers (whether auto, smart, or primitive) to dynamically-allocated (heap) memory, where the copy constructor necessarily performs deep copies. In such cases, there is no argument, ++i is perhaps an o...