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The necessity of hiding the salt for a hash
... used for every hash. In practice, this is easy to achieve by getting 8 or more bytes from cryptographic quality random number generator.
From a previous answer of mine:
Salt helps to thwart pre-computed dictionary attacks.
Suppose an attacker has a list of likely passwords. He can hash ea...
Regex Pattern to Match, Excluding when… / Except between
--Edit-- The current answers have some useful ideas but I want something more complete that I can 100% understand and reuse; that's why I set a bounty. Also ideas that work everywhere are better for me than not standard syntax like \K
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What is thread contention?
...d resources in such a way that at least one of the contending threads runs more slowly than it would if the other thread(s) were not running.
The most obvious example of contention is on a lock. If thread A has a lock and thread B wants to acquire that same lock, thread B will have to wait until th...
When to use wrapper class and primitive type
...rtain constructs such as Collections require objects and that objects have more overhead than their primitive counterparts (memory & boxing).
Another consideration is:
It can be handy to initialize Objects to null or send null parameters into a method/constructor to indicate state or function....
Dot character '.' in MVC Web API 2 for request such as api/people/STAFF.45287
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Why is reading lines from stdin much slower in C++ than Python?
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tl;dr: Because of different default settings in C++ requiring more system calls.
By default, cin is synchronized with stdio, which causes it to avoid any input buffering. If you add this to the top of your main, you should see much better performance:
std::ios_base::sync_with_stdio(fal...
More elegant “ps aux | grep -v grep”
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Benefits of prototypal inheritance over classical?
...People from languages like Java, which has classical inheritance, get even more confused because although constructors look like classes they don't behave like classes. As Douglas Crockford stated:
This indirection was intended to make the language seem more familiar to classically trained progr...
How to implement a rule engine?
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Where can I read more about your answer to learn the classes/objects/etc. you have in your in your code? It is mostly expression trees?
– Blankman
Jul 5 '11 at 0:15
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PEP 8, why no spaces around '=' in keyword argument or a default parameter value?
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i'd say it's not really more readable than kw1 = kw1, kw2 = kw2 ;) but maybe that was what Guido and Barry thought.
– soulcheck
Jan 13 '12 at 16:17
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