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Should I call Close() or Dispose() for stream objects?
... void Close()
{
this.Dispose(true);
GC.SuppressFinalize(this);
}
And StreamReader is:
public override void Close()
{
this.Dispose(true);
}
The Dispose(bool disposing) override in StreamReader is:
protected override void Dispose(bool disposing)
{
try
{
if ((this.Clos...
How to detect a loop in a linked list?
...ou can make use of Floyd's cycle-finding algorithm, also known as tortoise and hare algorithm.
The idea is to have two references to the list and move them at different speeds. Move one forward by 1 node and the other by 2 nodes.
If the linked list has a loop they
will definitely meet.
Else eith...
Repeat a task with a time delay?
...
You should use Handler's postDelayed function for this purpose. It will run your code with specified delay on the main UI thread, so you will be able to update UI controls.
private int mInterval = 5000; // 5 seconds by default, can be chan...
Why doesn't await on Task.WhenAll throw an AggregateException?
...nto the actual exception.
So, in catch block, you get the actual exception and not the aggregated one. This helps us write more natural and intuitive code.
This was also needed for easier conversion of existing code into using async/await where the a lot of code expects specific exceptions and not a...
Check if table exists and if it doesn't exist, create it in SQL Server 2008
...LECT * FROM sys.objects
WHERE object_id = OBJECT_ID(N'[dbo].[YourTable]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[YourTable](
....
....
....
)
END
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...
Why does (i
... j is evaluated to true, because auto unboxing happens for int
comparisons and then both i and j hold the default value, 0.
j <= i is evaluated to true because of the above reason.
i != j is evaluated to true, because both i and j are
different objects. And while comparing objects, there isn't an...
(How) can I count the items in an enum?
...st it's fairly easy to see that "enum foo {a=10,LAST}" is going to be odd. And I thought "int arr[LAST]" would be 11 items in this case, not 2, so most code will work (but you're wasting memory on invalid index values)
– Code Abominator
Jul 15 '15 at 5:44
...
Can I return the 'id' field after a LINQ insert?
... Maybe you'll need to set your field to "database generated" and "update on insert" for this to work.
– Sam
Sep 22 '08 at 9:57
1
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Insert results of a stored procedure into a temporary table
...a SELECT * INTO [temp table] FROM [stored procedure] ? Not FROM [Table] and without defining [temp table] ?
30 Answers
...
Select a Dictionary with LINQ
I have used the "select" keyword and extension method to return an IEnumerable<T> with LINQ, but I have a need to return a generic Dictionary<T1, T2> and can't figure it out. The example I learned this from used something in a form similar to the following:
...