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How is a CRC32 checksum calculated?
...x^1 + x^0)
= x^6 + x^5 + x^4 + 3*x^3 + x^2 + x^1 + x^0
If we assume x is base 2 then we get:
x^7 + x^3 + x^2 + x^1 + x^0
CRC primer Chp.5
Why? Because 3x^3 is 11x^11 (but we need only 1 or 0 pre digit) so we carry over:
=1x^110 + 1x^101 + 1x^100 + 11x^11 + 1x^10 + 1x^1 + x^0
=1x^11...
Code Golf: Lasers
...at the end of file, this is processed as a 0 in the numeric context. For C-based implementations where EOF has a different value (-1 say), this code might not work.
003pv >~v> #v_"a"43g-!#v_23g03p33v>v
>39#<*v :: >:52*-!v >"rorrE",vg2*
######1 >^vp31+1g31$_03g13gp...
How to handle WndProc messages in WPF?
...ected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
source.AddHook(WndProc);
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wPara...
How can I divide two integers to get a double?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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When are C++ macros beneficial? [closed]
...("Cookie: %s", cookies[i]);
Since C++11, this is superseded by the range-based for loop.
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How do I escape reserved words used as column names? MySQL/Create Table
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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New self vs. new static
..., I just take whatever is intuitive, and make it opposite. You would think based on the naming, self would return itself, and static would return something that cannot be overridden... But lo and behold it's the opposite. I never cease to be impressed by PHP's naming, conventions, and overall style....
Remove duplicate dict in list in Python
...
Another one-liner based on list comprehensions:
>>> d = [{'a': 123}, {'b': 123}, {'a': 123}]
>>> [i for n, i in enumerate(d) if i not in d[n + 1:]]
[{'b': 123}, {'a': 123}]
Here since we can use dict comparison, we only ke...
How do I unit test web api action method when it returns IHttpActionResult?
...e();
_userManager = null;
}
}
base.Dispose(disposing);
}
}
Start with a base class that all test classes will inherit from:
public class BaseTest
{
protected static User CurrentUser;
protected static IList<string> Roles;
public B...
Using ChildActionOnly in MVC
... a few properties common to all pages, one way to accomplish this is use a base view model and have all other view models inherit from it. Then, the _Layout can use the base view model and the common properties. The downside (which is subjective) is that all view models must inherit from the base vi...