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Is it safe to ignore the possibility of SHA collisions in practice?
...ty of such an event occurring in the next second to about 10-15. That's 45 orders of magnitude more probable than the SHA-256 collision. Briefly stated, if you find SHA-256 collisions scary then your priorities are wrong.
In a security setup, where an attacker gets to choose the messages which will...
Can a java file have more than one class?
... }
};
The Comparator class will normally require a separate file in order to be public. This way it is bundled with the class that uses it.
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Why does the C# compiler not fault code where a static method calls an instance method?
...he explanation of the dynamic example of the Original Question is that, in order to be consistent, when types are dynamic we also first find the best overload (checking only parameter number and parameter types etc., not static vs. non-static), and only then check for static. But that means that the...
How to assign from a function which returns more than one value?
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edited the question in order to include your remarks. thanks. giving names to things like r[1] can help to make things more clear (all right, not if names like a come in their place).
– mariotomo
Dec 1 '09 at...
SQL RANK() versus ROW_NUMBER()
...ly see the difference if you have ties within a partition for a particular ordering value.
RANK and DENSE_RANK are deterministic in this case, all rows with the same value for both the ordering and partitioning columns will end up with an equal result, whereas ROW_NUMBER will arbitrarily (non dete...
How do I make CMake output into a 'bin' dir?
...s. Absolutely nothing was working until coming to the realization that the order of these commands is very relevant.
– arthropod
Dec 28 '19 at 0:06
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How to fix 'sudo: no tty present and no askpass program specified' error?
...k for a password. For example in my system x11-ssh-askpass works fine.
In order to do that you have to specify what program to use, either with the environment variable SUDO_ASKPASS or in the sudo.conf file (see man sudo for details).
You can force sudo to use the askpass program by using the opti...
Django: ImproperlyConfigured: The SECRET_KEY setting must not be empty
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Hint: in order to identify what's causing the issue, e.g. add a random print statement in the settings file and move it around to see where it breaks.
– Felix Böhme
Sep 30 '15 at 15:52
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Limiting floats to two decimal points
...:.2f}".format(13.949999999999999)
Note 1: the above returns a string. In order to get as float, simply wrap with float(...):
float("{:.2f}".format(13.949999999999999))
Note 2: wrapping with float() doesn't change anything:
>>> x = 13.949999999999999999
>>> x
13.95
>>>...
Short description of the scoping rules?
...e5
x()
The for loop does not have its own namespace. In LEGB order, the scopes would be
L: Local in def spam (in code3, code4, and code5)
E: Any enclosing functions (if the whole example were in another def)
G: Were there any x declared globally in the module (in code1)?
B: Any buil...