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Why doesn't java.util.Set have get(int index)?
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Because sets have no ordering. Some implementations do (particularly those implementing the java.util.SortedSet interface), but that is not a general property of sets.
If you're trying to use sets this way, you should consider using a list inste...
How to print (using cout) a number in binary form?
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#include <iostream>
#include <cmath> // in order to use pow() function
using namespace std;
string show_binary(unsigned int u, int num_of_bits);
int main()
{
cout << show_binary(128, 8) << endl; // should print 10000000
cout << show_binar...
jQuery get mouse position within an element
...could click inside a div, then drag the mouse, then let up on the mouse in order to indicate how long they want something to be. (This is for a calendar control, so the user will be indicating the length, in time, of a certain event)
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LINQ order by null column where order is ascending and nulls should be last
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Try putting both columns in the same orderby.
orderby p.LowestPrice.HasValue descending, p.LowestPrice
Otherwise each orderby is a separate operation on the collection re-ordering it each time.
This should order the ones with a value first, "then" the order...
How to force garbage collection in Java?
...ES it is almost possible to forced you have to call to methods in the same order and at the same time this ones are:
System.gc ();
System.runFinalization ();
even if is just one object to clean the use of this two methods at the same time force the garbage collector to use the finalise() method o...
How to request a random row in SQL?
...rom that link):
Select a random row with MySQL:
SELECT column FROM table
ORDER BY RAND()
LIMIT 1
Select a random row with PostgreSQL:
SELECT column FROM table
ORDER BY RANDOM()
LIMIT 1
Select a random row with Microsoft SQL Server:
SELECT TOP 1 column FROM table
ORDER BY NEWID()
Select a r...
Difference between “include” and “require” in php
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Animated loading image in picasso
... attention to weak references and declare a Callback object in this way in order to avoid garbage collection (otherwise onSuccess could never get called): final Callback loadedCallback = new Callback() { @Override public void onSuccess() { // your code ...
How to create an AVD for Android 4.0
...s named "ARM EABI v7a System Image".
This is what you need to download in order to create an Android 4.0 virtual device:
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Why are mutable structs “evil”?
...foo, which it can use modify the fields of foo any number of times, in any order, until it returns, but it can't persist that reference. Before Method2 returns, unless it uses unsafe code, any and all copies that might have been made of its 'foo' reference will have disappeared. Method3, unlike Me...