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Biggest GWT Pitfalls? [closed]
...s your data back and forth via the RPC mechanism.
Problem: Sometimes in order to populate your GWT page, you need to make a server call when the page first loads. It can be annoying for the user to sit there and watch a loading symbol while you fetch the data you need.
Solution: In the case of a...
What is “stdafx.h” used for in Visual Studio?
...ine'd in advance of the includes, or by including the headers in different order), that is most often not the case. Most of the time, we have dozens or hundreds of included files, but they all are intended to have the same meaning for all the Cpp files being compiled in your application.
The compil...
How to use an existing database with an Android application [duplicate]
...he database in the assets folder, so for example, if your database name is ordersDB, then the value of DB_NAME will be ordersDB,
private static String DB_NAME ="ordersDB";
Keep the database in assets folder and then follow the below:
DataHelper class:
import java.io.File;
import java.io.FileO...
How to check a string for specific characters?
...s easier for me to always use them, than to always remember the precedence order :-).
– Abbafei
Feb 17 '13 at 7:46
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Rails: How does the respond_to block work?
... a bit. The entire class (responder) becomes the method implementation. In order to leverage method_missing, we need an instance of the class, so we're obliged to pass a callback into which they pass the method-like object. For someone who has coded in C-like languages for 20 some years, this is ver...
How to create a drop-down list?
...lt;android.support.v7.widget.AppCompatSpinner
android:id="@+id/spinner_order_type"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:backgroundTint="@color/red"/>
Inside your Activity class:
AppCompatSpinner spinOrderType = (AppCompatSpinner) find...
Unable to open project… cannot be opened because the project file cannot be parsed
...ers wasn't enough; I had to add extra lines to the project.pbxproj file in order to maintain correct formatting.
So, if you're running into parsing issues after you thought you'd resolved all you're merge conflicts, you might want to take a closer look at the .pbxproj and make sure there aren't any...
Why do this() and super() have to be the first statement in a constructor?
...appear first, enforces that constructor bodies are executed in the correct order which would be: Object -> Parent -> Child -> ChildOfChild -> SoOnSoForth
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method overloading vs optional parameter in C# 4.0 [duplicate]
...nt of this call - notice you don't need to set the parameter values in the order as they appear in the method signature, the named parameter makes the value explicit.
DoFoo(c:"hello again", a:100)
Another benefit of using named parameter is that it greatly enhances readability and thus code mai...
REST API - why use PUT DELETE POST GET?
...le, you should use 'safe' (unidirectional) methods such as GET and HEAD in order to limit potential vulnerability.
idempotent methods
Whenever possible, you should use 'idempotent' methods such as GET, HEAD, PUT and DELETE, which can't have side effects and are therefore less error prone/easier to...