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How do you convert a byte array to a hexadecimal string, and vice versa?
...= new StringBuilder(ba.Length * 2);
foreach (byte b in ba)
hex.AppendFormat("{0:x2}", b);
return hex.ToString();
}
or:
public static string ByteArrayToString(byte[] ba)
{
return BitConverter.ToString(ba).Replace("-","");
}
There are even more variants of doing it, for example here.
T...
How can I implement an Access Control List in my Web MVC application?
...s most of it to proper services (some of it goes to view too). Services perform operations that you commanded them to do. Then, when view is generating the response, it requests data from services, and based on that information, generates the response. Said response can be either HTML made from mult...
How do I put a bunch of uncommitted changes aside while working on something else
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
O(nlogn) Algorithm - Find three evenly spaced ones within binary string
...This step is O(n).
Find the polynomial q = p2, using the Fast Fourier Transform. For the example above, we get the polynomial q(x) = x16 + 2x13 + 2x12 + 3x10 + 4x9 + x8 + 2x7 + 4x6 + 2x5 + x4 + 2x3 + x2. This step is O(n log n).
Ignore all terms except those corresponding to x2k for some k in L. For...
Understanding typedefs for function pointers in C
... @FredOverflow: syntactically legal, yes; but anyone who used one of the forms you suggest for a regular function name should be hung, drawn, and made to code in Visual Basic for the rest of their life. And anyone using the triple star notation except to demonstrate that it is legal should be like...
Ioc/DI - Why do I have to reference all layers/assemblies in application's entry point?
...to all required libraries. Instead, you can use late binding either in the form of convention-based assembly-scanning (preferred) or XML configuration.
When you do that, however, you must remember to copy the assemblies to the application's bin folder, because that no longer happens automatically. ...
How are strings passed in .NET?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
How do iOS Push Notifications work?
...ion to the target device..
I suggest reading the documentation for more information and how to use and configure. It's all there.
Push Notifications
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Why should I avoid using Properties in C#?
...
I´d go further. Except for the performance aspect, I don´t see why a programmer should KNOW if something is a field, or a property. He should think of it as a instance´s attribute designating the object instance´s STATE, and the object implementation shoul...
How to create GUID / UUID?
...e @broofa's answer, below) there are several common pitfalls:
Invalid id format (UUIDs must be of the form "xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx", where x is one of [0-9, a-f] M is one of [1-5], and N is [8, 9, a, or b]
Use of a low-quality source of randomness (such as Math.random)
Thus, develo...