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C# version of java's synchronized keyword?
...*/}
This can also be used on accessors (properties and events):
private int i;
public int SomeProperty
{
[MethodImpl(MethodImplOptions.Synchronized)]
get { return i; }
[MethodImpl(MethodImplOptions.Synchronized)]
set { i = value; }
}
Note that field-like events are synchronized ...
How can I add an animation to the activity finish()
... fixed this issue using this kind of approach:
to open with animation:
Intent newUser = new Intent(getBaseContext(), NewUserActivity.class);
startActivity(newUser);
overridePendingTransition(R.anim.slide_in_right,R.anim.slide_out_left);
To close with animation:
@Override
public boolea...
How to return PDF to browser in MVC?
...
Cannot implicitly convert type 'System.Web.Mvc.FileStreamResult' to 'System.Web.Mvc.FileContentResult'
– CountMurphy
Apr 13 '15 at 16:14
...
Send JSON data via POST (ajax) and receive json response from Controller (MVC)
...
@Dave no, an endpoint (in this case an mvc controller function) should NEVER trust a client, therefore the XSS check should be done at the server. The controller is responsible for parsing the data in the correct way and send the data back to ...
How do I check for a network connection?
...T 2.0 using GetIsNetworkAvailable():
System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable()
To monitor changes in IP address or changes in network availability use the events from the NetworkChange class:
System.Net.NetworkInformation.NetworkChange.NetworkAvailabilityChanged
Syst...
How to prevent multiple instances of an Activity when it is launched with different Intents
... Market). It seems that launching it from the Play Store uses a different Intent than launching it from the phone's application menu of icons. This is leading to multiple copies of the same Activity being launched, which are conflicting with each other.
...
Pandas DataFrame Groupby two columns and get counts
... 3
C 1
4 B 1
5 B 2
6 B 1
dtype: int64
To get the same answer as waitingkuo (the "second question"), but slightly cleaner, is to groupby the level:
In [12]: df.groupby(['col5', 'col2']).size().groupby(level=1).max()
Out[12]:
col2
A 3
B 2
C ...
Saving enum from select in Rails 4.1
...
No need converting the enum hash to array with to_a. This suffice:
f.select :color, Wine.colors.map { |key, value| [key.humanize, key] }
share
|
...
Java 反射最佳实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...tpRequest);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
...
Is it unnecessary to put super() in constructor?
...
public class Base { }
public class Derived extends Base { public Derived(int i) { } }
Also fine.
public class Base { public Base(String s) { } }
public class Derived extends Base { }
The above is a compilation error as Base has no default constructor.
public class Base { private Base() { } }...