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When should you use 'friend' in C++?
...t;typename Derived>
struct Policy {
void doSomething() {
// casting this to Derived* requires us to see that we are a
// base-class of Derived.
some_type const& t = static_cast<Derived*>(this)->getSomething();
}
};
// note, derived privately
template...
Delete duplicate records in SQL Server?
...columns (and it also doesn't work with GUID's)
For 2008R2 you'll need to cast the GUID to a type supported by MIN, e.g.
delete from GuidEmployees
where CAST(ID AS binary(16)) not in
(
select min(CAST(ID AS binary(16)))
from GuidEmployees
group by EmployeeName
);
SqlFiddle for vario...
How to bind an enum to a combobox control in WPF?
...r example:
yourComboBox.ItemsSource = Enum.GetValues(typeof(EffectStyle)).Cast<EffectStyle>();
If you need to bind it in XAML you need to use ObjectDataProvider to create object available as binding source:
<Window x:Class="YourNamespace.MainWindow"
xmlns="http://schemas.microso...
How to display Toast in Android?
...tivity.
text
text - Return "STRING" , If not string you can use type cast.
(string)num // type caste
duration
Toast.LENGTH_SHORT - Toast delay 2000 ms predefined
Toast.LENGTH_LONG - Toast delay 3500 ms predefined
milisecond - Toast delay user defined miliseconds (eg. 400...
Can I convert long to int?
...o when implementing a CompareTo operation, for instance, you can't happily cast the result of subtracting one long from another to an int and return that; for some values, your comparison would yield an incorrect result.
– T.J. Crowder
Apr 10 '11 at 8:56
...
Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...
I accept type casting argument. However I'm not sure I see the problems with optimization. I was just thinking that the compiler could treat the struct exactly as if I had written it in ordered form myself. Sure there are cases where we ca...
What are the use cases for selecting CHAR over VARCHAR in SQL?
... varchar (thus consuming less space on my database) and then use a view to CAST everything to it's char equivalent, with the length corresponding to the width of the fixed width for that column. For example:
create table tblStagingTable (
pkID BIGINT (IDENTITY,1,1),
CustomerFirstName varchar(30),
...
Java Enum definition
...
Your solution has an unchecked cast: return (CHILD) this; Consider adding a getThis() method: protected CHILD getThis() { return this; } See: angelikalanger.com/GenericsFAQ/FAQSections/…
– Roland
Nov 28 '1...
Returning anonymous type in C#
... article:
using System;
static class GrottyHacks
{
internal static T Cast<T>(object target, T example)
{
return (T) target;
}
}
class CheesecakeFactory
{
static object CreateCheesecake()
{
return new { Fruit="Strawberry", Topping="Chocolate" };
}
...
How to dynamic new Anonymous Class?
...able, you could add or remove fields on the fly.
edit
Sure you can: just cast it to IDictionary<string, object>. Then you can use the indexer.
You use the same casting technique to iterate over the fields:
dynamic employee = new ExpandoObject();
employee.Name = "John Smith";
employee.Age =...