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Example: Communication between Activity and Service using Messaging
... an instance of itself to consumers who call onBind. Then you can directly interact with the service, e.g. registering your own listener interface with the service, so that you can get callbacks.
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What is the difference between Type and Class?
...lass defines how the
object is implemented .The class
defines object's internal state and
the implementation of its
operations.
In contrast, an object's
type only refers to its interface - a
set of requests to which it can
respond.
An object can have many types,
and objects...
How can I limit Parallel.ForEach?
...new ParallelOptions { MaxDegreeOfParallelism = Convert.ToInt32(Math.Ceiling((Environment.ProcessorCount * 0.75) * 1.0)) };
– jKlaus
Dec 2 '15 at 18:18
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How to call Android contacts list?
...hen return to my app with the contact's name. Here's the code I got on the internet, but it doesnt work.
13 Answers
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Why does the order of the loops affect performance when iterating over a 2D array?
...ttle chunks (called 'cache lines'), typically 64 bytes. If you have 4-byte integers, that means you're geting 16 consecutive integers in a neat little bundle. It's actually fairly slow to fetch these chunks of memory; your CPU can do a lot of work in the time it takes for a single cache line to load...
What integer hash function are good that accepts an integer hash key?
What integer hash function are good that accepts an integer hash key?
11 Answers
11
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How do I check if a number is positive or negative in C#?
...ic static class AwesomeExtensions
{
public static bool IsPositive(this int number)
{
return number > 0;
}
public static bool IsNegative(this int number)
{
return number < 0;
}
public static bool IsZero(this int number)
{
return number =...
Serialize Class containing Dictionary member
... The XmlSerializer cannot process
classes implementing the IDictionary
interface. This was partly due to
schedule constraints and partly due to
the fact that a hashtable does not
have a counterpart in the XSD type
system. The only solution is to
implement a custom hashtable that does
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Getting result of dynamic SQL into a variable for sql-server
...CLARE @sqlCommand nvarchar(1000)
DECLARE @city varchar(75)
declare @counts int
SET @city = 'New York'
SET @sqlCommand = 'SELECT @cnt=COUNT(*) FROM customers WHERE City = @city'
EXECUTE sp_executesql @sqlCommand, N'@city nvarchar(75),@cnt int OUTPUT', @city = @city, @cnt=@counts OUTPUT
select @counts...
How do you reverse a string in place in C or C++?
...
The standard algorithm is to use pointers to the start / end, and walk them inward until they meet or cross in the middle. Swap as you go.
Reverse ASCII string, i.e. a 0-terminated array where every character fits in 1 char. (Or other non-multibyte charac...