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Group By Multiple Columns
... new {t.MaterialID, t.ProductID}
into grp
select new
{
grp.Key.MaterialID,
grp.Key.ProductID,
Quantity = grp.Sum(t => t.Quantity)
}).ToList();
...
Implementing MVC with Windows Forms
... bit complex, but it can work well for applications that have a good fit.
Selecting an MVC/MVP Implementation for a Winforms Project give an overview that is worth reading. A lot of people like PureMVC. I have never used it, but I would look at it the next time I need a MVC framework.
"Presenter F...
Determining 32 vs 64 bit in C++
...lt;sizeof(size_t)>(); }
int main()
{
// appropriate function will be selected at compile time
DoMyOperation();
return 0;
}
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...
Does it make any sense to use inline keyword with templates?
...s, multiple equivalent definitions may be passed to the linker, which will select one). That, not inlining, is the real function of the inline keyword.
– Ben Voigt
Jul 10 '12 at 21:12
...
Which .NET Dependency Injection frameworks are worth looking into? [closed]
...nd evaluating and seeing which one fits. The nice thing is you have a nice selection of donuts rather than just having to have a jelly one.
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foll...
How do I time a method's execution in Java?
....stop());
The nice thing is that Stopwatch.toString() does a good job of selecting time units for the measurement. I.e. if the value is small, it'll output 38 ns, if it's long, it'll show 5m 3s
Even nicer:
Stopwatch timer = Stopwatch.createUnstarted();
for (...) {
timer.start();
methodToTr...
Can I 'git commit' a file and ignore its content changes?
...an move it to different Change Set.
Head over to Local Changes (Cmd + 9)
Select file(s) you want to ignore
F6 to move them to another Change Set
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How to implement Rate It feature in Android App
...lay the pop up for 3 days and 10 launches. The same is done for those that selected to rate it, however the delays is longer (not to bother the user so soon in case that he has actually rated the app. This can be changed to not be shown again, then you will have to alter the code to your like). Hope...
MySQL foreign key constraints, cascade delete
...RITY DEFINER
BEGIN
DELETE FROM
`products`
WHERE
`id` IN (
SELECT `products_id`
FROM `categories_products`
WHERE `categories_id` = category_ID
)
;
DELETE FROM `categories`
WHERE `id` = category_ID;
END
You also need to add the following foreign key constraints...
How can I provide multiple conditions for data trigger in WPF?
...he user picks a wrong answer it becomes disabled (dimmed out and cannot be selected again). An automated agent has the ability to focus on any particular choice to give an explanation (border highlighted). When the agent focuses on an item, it should not be dimmed out even if it is disabled. All ite...