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How to update only one field using Entity Framework?
... DbContext (introduced in EF 4.1):
public void ChangePassword(int userId, string password)
{
var user = new User() { Id = userId, Password = password };
using (var db = new MyEfContextName())
{
db.Users.Attach(user);
db.Entry(user).Property(x => x.Password).IsModified = true;
d...
Display date/time in user's locale format and time offset
... methods to set it to the date/time you want.
Then the various toLocale…String methods will provide localized output.
Example:
// This would come from the server.
// Also, this whole block could probably be made into an mktime function.
// All very bare here for quick grasping.
d = new D...
Web Service vs WCF Service
...ic class Service : System.Web.Services.WebService
{
[WebMethod]
public string Test(string strMsg)
{
return strMsg;
}
}
To develop a service in WCF, we will write the following code
[ServiceContract]
public interface ITest
{
[OperationContract]
string ShowMessage(string strMsg);
}
...
Dynamically select data frame columns using $ and a character value
...e that must first be evaluated in the second argument. You may only pass a string which is never evaluated.
Instead use [ (or [[ if you want to extract only a single column as a vector).
For example,
var <- "mpg"
#Doesn't work
mtcars$var
#These both work, but note that what they return is d...
How to get the full url in Express?
...from req.originalUrl (thanks @pgrassant). Note this DOES include the query string. docs here on req.url and req.originalUrl. Depending on what you intend to do with the URL, originalUrl may or may not be the correct value as compared to req.url.
Combine those all together to reconstruct the absolu...
How to prettyprint a JSON file?
...nting this also works without explicit parsing: print json.dumps(your_json_string, indent=4)
– Peterino
Aug 4 '14 at 14:07
11
...
How to find out element position in slice?
... }
}
return -1
}
And usage:
xs := []int{2, 4, 6, 8}
ys := []string{"C", "B", "K", "A"}
fmt.Println(
SliceIndex(len(xs), func(i int) bool { return xs[i] == 5 }),
SliceIndex(len(xs), func(i int) bool { return xs[i] == 6 }),
SliceIndex(len(ys), func(i int) bool { return ys[i]...
Passing arrays as parameters in bash
...tes removed. If you do not, the value of the original array is read as one string and assigned to argAry1[0] and argAry2[0] respectively, basically meaning the array structure is lost.
– user.friendly
Mar 5 '16 at 23:02
...
How to reference a method in javadoc?
...on, is:
Examples
Method in the same class:
/** See also {@link #myMethod(String)}. */
void foo() { ... }
Method in a different class, either in the same package or imported:
/** See also {@link MyOtherClass#myMethod(String)}. */
void foo() { ... }
Method in a different package and not imported:...
Drag and drop files into WPF
...rmats.FileDrop))
{
// Note that you can have more than one file.
string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
// Assuming you have one file that you care about, pass it off to whatever
// handling code you have defined.
HandleFileOpen(files[0]);
}
}
Als...