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“X does not name a type” error in C++
...struct is not yet defined
struct bar
{
// this is okay, it's just a pointer;
// we can point to something without knowing how that something is defined
foo* fp;
// likewise, we can form a reference to it
void some_func(foo& fr);
// but this would be an error, as befor...
How to use count and group by at the same select statement
... set it to the number of users then select with that.
DECLARE @numOfUsers INT
SET @numOfUsers = SELECT COUNT(*) FROM user
SELECT DISTINCT town, @numOfUsers
FROM user
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improve this answer
...
DbEntityValidationException - How can I easily tell what caused the error?
...xt:
public partial class SomethingSomethingEntities
{
public override int SaveChanges()
{
try
{
return base.SaveChanges();
}
catch (DbEntityValidationException ex)
{
// Retrieve the error messages as a list of strings.
...
ValidateRequest=“false” doesn't work in Asp.Net 4
...on everywhere else.
e.g.
[ValidateInput(false)]
public ActionMethod Edit(int id, string value)
{
// Do your own checking of value since it could contain XSS stuff!
return View();
}
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...
System.Net.WebException HTTP status code
...e != null)
{
Console.WriteLine("HTTP Status Code: " + (int)response.StatusCode);
}
else
{
// no http status code available
}
}
else
{
// no http status code available
}
}
...
How to draw rounded rectangle in Android UI?
...
}
public CustomeView(Context context, IAttributeSet attrs, int defStyle) : base(context, attrs, defStyle)
{
}
protected override void OnDraw(Android.Graphics.Canvas canvas)
{
base.OnDraw(canvas);
Paint p = new Paint();
...
How to remove a single, specific object from a ConcurrentBag?
... new List<string>();
var x = new ConcurrentBag<string>();
for (int i = 0; i < 10; i++)
{
x.Add(string.Format("adding{0}", i));
}
string y;
while (!x.IsEmpty)
{
x.TryTake(out y);
if(string.Equals(y, stringToMatch, StringComparison.CurrentCultureIgnoreCase))
{
b...
A dependent property in a ReferentialConstraint is mapped to a store-generated column
...you want to configure a One-to-Zero-or-One relationship
.HasColumnType("int");
Remove this line
.HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity)
Example http://www.entityframeworktutorial.net/code-first/configure-one-to-one-relationship-in-code-first.aspx
This is enough t...
How to use a decimal range() step value?
...imal step directly, it's much safer to express this in terms of how many points you want. Otherwise, floating-point rounding error is likely to give you a wrong result.
You can use the linspace function from the NumPy library (which isn't part of the standard library but is relatively easy to obtai...
Java Security: Illegal key size or default parameters?
...com/webapp/iwm/web/preLogin.do?source=jcesdk
– quietmint
Dec 27 '13 at 21:13
4
Since Java 9 and J...