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Pure virtual function with implementation
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It's worth pointing out that making A::f() pure means that B must implement f() (otherwise B would be abstract and uninstantiable). And as @MichaelBurr points out, providing an implementation for A::f() means that B may use it to define ...
Java 32-bit vs 64-bit compatibility
Will Java code built and compiled against a 32-bit JDK into 32-bit byte code work in a 64-bit JVM? Or does a 64-bit JVM require 64-bit byte code?
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Finish an activity from another activity
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When the user clicks new, do FirstActivity.fa.finish(); and call the new Intent.
When the user clicks modify, call the new Intent or simply finish activity B.
FIRST WAY
In your first activity, declare one Activity object like this,
public static Activity fa;
onCreate()
{
fa = this;
}
now...
Horizontal ListView in Android?
...ethods updated to move horizontally rather than vertically. I haven't run into any issues yet. Thank you so much for directing me there, Malachiasz!
– SilithCrowe
Feb 20 '14 at 16:09
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Thread-safe List property
...stem.Collections.Generic.List<T> as it is (Radek Stromský already pointed it out) not ordered.
But there is a class called System.Collections.Generic.SynchronizedCollection<T> that is already since .NET 3.0 part of the framework, but it is that well hidden in a location where one does ...
setMaxResults for Spring-Data-JPA annotation?
I am trying to incorporate Spring-Data-JPA into my project.
One thing that confuses me is how do I achieve setMaxResults(n) by annotation ?
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Get img thumbnails from Vimeo?
...oUrl = System.Web.HttpContext.Current.Server.HtmlEncode(vimeoURL);
int pos = vimeoUrl.LastIndexOf(".com");
string videoID = vimeoUrl.Substring(pos + 4, 8);
XmlDocument doc = new XmlDocument();
doc.Load("http://vimeo.com/api/v2/video/" + videoID + ".xml");
Xml...
Python memory leaks [closed]
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I tried out most options mentioned previously but found this small and intuitive package to be the best: pympler
It's quite straight forward to trace objects that were not garbage-collected, check this small example:
install package via pip install pympler
from pympler.tracker import SummaryT...
json_encode is returning NULL?
... know this question is a little bit old now, but that's the awesomeness of internet!!
– fabio
Feb 11 '11 at 23:23
7
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Strings are objects in Java, so why don't we use 'new' to create them?
...rals [ie, Strings like "abcd" but not like new String("abcd")] in Java are interned - this means that every time you refer to "abcd", you get a reference to a single String instance, rather than a new one each time. So you will have:
String a = "abcd";
String b = "abcd";
a == b; //True
but if y...