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Published on 2010-03-12T09:45:27Z
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2010/03/12
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Shhow me a very simple one line example in C# to check if a given bit is set in given byte
function signature should be like
bool IsBitSet(Byte b,byte nPos)
{
return .....;
}
The Speed vs
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I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:…
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Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to…
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The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions…
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I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot…
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Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test…
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I've a few lines of code within a project, that I can't see the value of...
buffer[i] = (currentByte & 0x7F) | (currentByte & 0x80);
It reads the filebuffer from a file, stored as bytes, and then transfers then to buffer[i] as shown, but I can't understand what the overall purpose is, any…
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I don't use C++ or bitwise operations at my current job but I'm thinking of applying to companies where it is a requirement to be fluent with them (on their tests anyway).
So my question is: Can anyone suggest a project which will require gaining a fluency in bitwise operations to complete?
On a…
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Hi all
I am trying to do bit reversal in a byte. I use the code below
static int BitReversal(int n)
{
int u0 = 0x55555555; // 01010101010101010101010101010101
int u1 = 0x33333333; // 00110011001100110011001100110011
int u2 = 0x0F0F0F0F; // 00001111000011110000111100001111
int u3…
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What are some real world use cases of the following bitwise operators?
AND
XOR
NOT
OR
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Hello,
I have the following problems:
First: I am trying to do a 32-spaces bitwise left shift on a large number, and for some reason the number is always returned as-is. For example:
echo(516103988<<32); // echoes 516103988
Because shifting the bits to the left one space is the equivalent…
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