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How do you rotate a two dimensional array?
...
Here it is in C#
int[,] array = new int[4,4] {
{ 1,2,3,4 },
{ 5,6,7,8 },
{ 9,0,1,2 },
{ 3,4,5,6 }
};
int[,] rotated = RotateMatrix(array, 4);
static int[,] RotateMatrix(int[,] matrix, int n) {
int[,] ret = new int[n, n];...
Why aren't pointers initialized with NULL by default?
Can someone please explain why pointers aren't initialized to NULL ?
Example:
15 Answers
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Verifying a specific parameter with Moq
... is to use a callback on the Setup call to store the value that was passed into the mocked method, and then write standard Assert methods to validate it. For example:
// Arrange
MyObject saveObject;
mock.Setup(c => c.Method(It.IsAny<int>(), It.IsAny<MyObject>()))
.Callback<...
Hibernate error - QuerySyntaxException: users is not mapped [from users]
...--------------------------------------------------------------
private int id;
private String name;
//~ --- [METHODS] --------------------------------------------------------------------------------------------------
@Override
public boolean equals(final Object o) {
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What's “requestCode” used for on PendingIntent?
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requestCode is used to retrieve the same pending intent instance later on (for cancelling, etc).
Yes, my guess is the alarms will override each other. I would keep the request codes unique.
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Where to put the doxygen comment blocks for an internal library - in H or in CPP files? [closed]
...ments in front of methods.
That is the best way to make sure things are maintained. It also keeps your header files relatively lean and avoids the touching issue of people updating method docs causing headers to be dirty and triggering rebuilds. I have actually known people use that as an excuse fo...
ViewPager PagerAdapter not updating the View
...ficient.
Override getItemPosition in your PagerAdapter like this:
public int getItemPosition(Object object) {
return POSITION_NONE;
}
This way, when you call notifyDataSetChanged(), the view pager will remove all views and reload them all. As so the reload effect is obtained.
The second opt...
How to dynamically update a ListView on Android [closed]
..."fill_parent"
android:orientation="vertical" >
<!-- Pretty hint text, and maxLines -->
<EditText android:id="@+building_list/search_box"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="type to filter"
and...
Number of occurrences of a character in a string [duplicate]
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You could do this:
int count = test.Split('&').Length - 1;
Or with LINQ:
test.Count(x => x == '&');
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Reverse a string in Java
...ead of StringBuilder — they have the same API. Thanks commentators for pointing out that StringBuilder is preferred nowadays when there is no concurrency concern.
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