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Is this the right way to clean-up Fragment back stack when leaving a deeply nested stack?
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Well there are a few ways to go about this depending on the intended behavior, but this link should give you all the best solutions and not surprisingly is from Dianne Hackborn
http://groups.google.com/group/android-developers/browse_thread/thread/d2a5c203dad6ec42
Essentially you ha...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
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Inserting a duplicate key in columns with PRIMARY KEY or UNIQUE constraints.
Inserting a NULL into a column with a NOT NULL constraint.
Inserting a row to a partitioned table, but the values you insert don't map to a partition.
If you use REPLACE, MySQL actually does a DELETE followed by an ...
Why use the SQL Server 2008 geography data type?
...lDegrees = 1
Begin
set @X = 1
END
Else
Begin
set @X = 24
End
-- convert to decimal degrees
set @Lat1 = @Latitude1 * @X
set @Long1 = @Longitude1 * @X
set @Lat2 = @Latitude2 * @X
set @Long2 = @Longitude2 * @X
-- convert to radians: radians = (degrees/180) * PI
set @Lat1 = (@Lat1 / 180) * @...
Why use multiple columns as primary keys (composite primary key)
... the two is guaranteed unique.
The alternative is to use a generated (non-intelligent) primary key, for example in this case OrderDetailId. But then you would not always see the relationship as easily. Some folks prefer one way; some prefer the other way.
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How do I seed a random class to avoid getting duplicate random values [duplicate]
...andom instance in a loop. Try something like:
var rnd = new Random();
for(int i = 0; i < 100; ++i)
Console.WriteLine(rnd.Next(1, 100));
The sequence of random numbers generated by a single Random instance is supposed to be uniformly distributed. By creating a new Random instance for every ...
How to remove item from list in C#?
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List<T> has two methods you can use.
RemoveAt(int index) can be used if you know the index of the item. For example:
resultlist.RemoveAt(1);
Or you can use Remove(T item):
var itemToRemove = resultlist.Single(r => r.Id == 2);
resultList.Remove(itemToRemove);
Whe...
Can I set a breakpoint on 'memory access' in GDB?
I am running an application through gdb and I want to set a breakpoint for any time a specific variable is accessed / changed. Is there a good method for doing this? I would also be interested in other ways to monitor a variable in C/C++ to see if/when it changes.
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Validation failed for one or more entities while saving changes to SQL Server Database using Entity
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You sir, won the internet.
– Leandro
Nov 13 '14 at 20:17
8
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Proper stack and heap usage in C++?
... it, you must allocate it on the heap.
class Thingy;
Thingy* foo( )
{
int a; // this int lives on the stack
Thingy B; // this thingy lives on the stack and will be deleted when we return from foo
Thingy *pointerToB = &B; // this points to an address on the stack
Thingy *pointerToC = n...
Set focus on TextBox in WPF from view model
...perty of the control I want to shift the focus to is tied to a multi-value converter. Apparently, the GotFocus event handler gets called before the multi-value converter does...which means the control, at that point, is disabled, so as soon as GotFocus completes, LostFocus gets called (I guess becau...