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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
... ‘=’. Why an
equals sign? Why not just curly braces
{…}, like in Java? Because semicolons,
function return types, method
arguments lists, and even the curly
braces are sometimes omitted, using an
equals sign prevents several possible
parsing ambiguities. Using an equals
sign al...
OnCreateOptionsMenu() not called in Fragment
...t app crashes with 11-27 01:55:34.468: E/AndroidRuntime(12294): Caused by: java.lang.ClassCastException: com.android.internal.view.menu.MenuItemImpl cannot be cast to android.widget.SearchView
– Android_programmer_office
Nov 26 '13 at 20:26
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Android ClassNotFoundException: Didn't find class on path
...ies
The "Properties for " panel will open. From the menu on the left go to Java Build Path -> Order and Export
From the list below uncheck the box next to "Android Dependencies"
Finally clean your project and run
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What is the Scala annotation to ensure a tail recursive function is optimized?
...tricks):
C:\Prog\Scala\tests>scala
Welcome to Scala version 2.8.0.RC5 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_18).
Type in expressions to have them evaluated.
Type :help for more information.
scala> import scala.annotation.tailrec
import scala.annotation.tailrec
scala> class Tails...
Eclipse Workspaces: What for and why?
...provide you with my vision of somebody who feels very uncomfortable in the Java world, which I assume is also your case.
What it is
A workspace is a concept of grouping together:
a set of (somehow) related projects
some configuration pertaining to all these projects
some settings for Eclipse itself...
Multi-gradient shapes
...works, haha. Right now it works in XML, but should be doable for shapes in Java as well. It's kind of complex, and I imagine there's a way to simplify it into a single shape, but this is what I've got for now:
green_horizontal_gradient.xml
<?xml version="1.0" encoding="utf-8"?>
<shape
...
How to create a HTTP server in Android? [closed]
...r this one:
https://github.com/NanoHttpd/nanohttpd.
Very small, written in Java. I used it without any problem.
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Get context of test project in Android junit test case
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I get java.lang.NoSuchMethodException: android.test.ServiceTestCase.getTestContext()
– kurdtpage
May 23 '18 at 4:28
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How can I check whether an array is null / empty?
...
I am from .net background. However, java/c# are more/less same.
If you instantiate a non-primitive type (array in your case), it won't be null.
e.g. int[] numbers = new int[3];
In this case, the space is allocated & each of the element has a default value ...
Postgres: “ERROR: cached plan must not change result type”
...ot change result type when trying to solve the problem in the context of a Java / JDBC application.
I was able to reliably reproduce the error by running schema upgrades (i.e. DDL statements) while my back-end app that used the DB was running. If the app was querying a table that had been changed ...