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Can an abstract class have a constructor?
...lass can have a constructor. Consider this:
abstract class Product {
int multiplyBy;
public Product( int multiplyBy ) {
this.multiplyBy = multiplyBy;
}
public int mutiply(int val) {
return multiplyBy * val;
}
}
class TimesTwo extends Product {
public TimesT...
How can I find the last element in a List?
...
If you just want to access the last item in the list you can do
if(integerList.Count>0)
{
var item = integerList[integerList.Count - 1];
}
to get the total number of items in the list you can use the Count property
var itemCount = integerList.Count;
...
Can I set an unlimited length for maxJsonLength in web.config?
...a/7207539/1246870
The MaxJsonLength property cannot be unlimited, is an integer property that defaults to 102400 (100k).
You can set the MaxJsonLength property on your web.config:
<configuration>
<system.web.extensions>
<scripting>
<webServices>
...
Why is processing a sorted array faster than processing an unsorted array?
...ly useless.
Further reading: "Branch predictor" article on Wikipedia.
As hinted from above, the culprit is this if-statement:
if (data[c] >= 128)
sum += data[c];
Notice that the data is evenly distributed between 0 and 255. When the data is sorted, roughly the first half of the iterations w...
Multiple glibc libraries on a single host
...e errors you are seeing.
The absolute path to ld-linux.so.2 is hard-coded into the executable at link time, and can not be easily changed after the link is done.
To build an executable that will work with the new glibc, do this:
g++ main.o -o myapp ... \
-Wl,--rpath=/path/to/newglibc \
-Wl,...
Git push error '[remote rejected] master -> master (branch is currently checked out)'
...
You can simply convert your remote repository to bare repository (there is no working copy in the bare repository - the folder contains only the actual repository data).
Execute the following command in your remote repository folder:
git ...
Why doesn't java.util.Set have get(int index)?
...'s a good reason, but could someone please explain why the java.util.Set interface lacks get(int Index) , or any similar get() method?
...
What is the main purpose of setTag() getTag() methods of View?
...
@Sagar: public void ui_click(View view){ if(20==((int)view.getTag())) view.setBackgroundColor(colorInt); } should do the trick for the color part. 20 is just a placeholder for the validating position of your View.
– RiA
Mar 10 '16 at 23...
Which one will execute faster, if (flag==0) or if (0==flag)?
Interview question: Which one will execute faster, if (flag==0) or if (0==flag) ? Why?
16 Answers
...
List or IList [closed]
...hrough a library that others will use, you generally want to expose it via interfaces rather than concrete implementations. This will help if you decide to change the implementation of your class later to use a different concrete class. In that case the users of your library won't need to update t...