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Determine when a ViewPager changes pages
...ener(new OnPageChangeListener() {
public void onPageScrollStateChanged(int state) {}
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}
public void onPageSelected(int position) {
// Check if this is the page you want.
}
});
...
How do I make a textbox that only accepts numbers?
...have a windows forms app with a textbox control that I want to only accept integer values. In the past I've done this kind of validation by overloading the KeyPress event and just removing characters which didn't fit the specification. I've looked at the MaskedTextBox control but I'd like a more gen...
Return from lambda forEach() in java
... case it will be streams, lambdas and method references.
You should never convert existing code to Java 8 code on a line-by-line basis, you should extract features and convert those.
What I identified in your first case is the following:
You want to add elements of an input structure to an outpu...
Calculate date from week number
...or Week 53 of 2009 as well.
public static DateTime FirstDateOfWeekISO8601(int year, int weekOfYear)
{
DateTime jan1 = new DateTime(year, 1, 1);
int daysOffset = DayOfWeek.Thursday - jan1.DayOfWeek;
// Use first Thursday in January to get first week of the year as
// it will never b...
What does 'const static' mean in C and C++?
...
A lot of people gave the basic answer but nobody pointed out that in C++ const defaults to static at namespace level (and some gave wrong information). See the C++98 standard section 3.5.3.
First some background:
Translation unit: A source file after the pre-processor (recu...
How can I change the EditText text without triggering the Text Watcher?
...
Your hint is enough for me. Actually I was registering the listener in onResume but not de-registering in onPause(), so it was calling multiple times.
– Smeet
Jun 7 '17 at 12:04
...
Get output parameter value in ADO.NET
...nd type)
SqlParameter outputIdParam = new SqlParameter("@ID", SqlDbType.Int)
{
Direction = ParameterDirection.Output
};
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(outputIdParam);
conn.Open();
cmd.ExecuteNonQuery();
// Some various ways to gra...
Passing an array by reference
...ant a reference to an array, rather than the (invalid) array of references int & array[100];.
EDIT: Some clarification.
void foo(int * x);
void foo(int x[100]);
void foo(int x[]);
These three are different ways of declaring the same function. They're all treated as taking an int * parameter...
How do I call one constructor from another in Java?
...
Yes, it is possible:
public class Foo {
private int x;
public Foo() {
this(1);
}
public Foo(int x) {
this.x = x;
}
}
To chain to a particular superclass constructor instead of one in the same class, use super instead of this. Note that y...
Unsigned keyword in C++
...d long. When one of these type modifiers is used by itself, a data type of int is assumed
This means that you can assume the author is using ints.
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