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EditText maxLines not working - user can still input more lines than set
...n't a built in "row limiter". But I did built one my self, so if anyone is interested the code is below. Cheers.
et.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
// if enter is pressed start calculatin...
Why do people still use primitive types in Java?
Since Java 5, we've had boxing/unboxing of primitive types so that int is wrapped to be java.lang.Integer , and so and and so forth.
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How to inherit constructors?
...s?? That's your main problem. How about this instead?
public Foo(params int[] list) {...}
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Why in C++ do we use DWORD rather than unsigned int? [duplicate]
...me, do as the Romans do.") For you, that happens to correspond to unsigned int, but that might not always be the case. To be safe, use DWORD when a DWORD is expected, regardless of what it may actually be.
For example, if they ever changed the range or format of unsigned int they could use a differ...
Sort an array in Java
I'm trying to make a program that consists of an array of 10 integers which all has a random value, so far so good.
17 Answ...
Getting the array length of a 2D array in Java
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Consider
public static void main(String[] args) {
int[][] foo = new int[][] {
new int[] { 1, 2, 3 },
new int[] { 1, 2, 3, 4},
};
System.out.println(foo.length); //2
System.out.println(foo[0].length); //3
System.out.println(foo[1].length); //4...
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...
datetime dtypes in pandas read_csv
...n has a keyword argument called parse_dates
Using this you can on the fly convert strings, floats or integers into datetimes using the default date_parser (dateutil.parser.parser)
headers = ['col1', 'col2', 'col3', 'col4']
dtypes = {'col1': 'str', 'col2': 'str', 'col3': 'str', 'col4': 'float'}
par...
Simple explanation of MapReduce?
...
Take a bunch of data
Perform some kind of transformation that converts every datum to another kind of datum
Combine those new data into yet simpler data
Step 2 is Map. Step 3 is Reduce.
For example,
Get time between two impulses on a pair of pressure meters on the road
Map those ti...