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How to use the TextWatcher class in Android?
...e TextWatcher...
et1.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, in...
Making a Location object in Android with latitude and longitude values
...th you current location.
Location targetLocation = new Location("");//provider name is unnecessary
targetLocation.setLatitude(0.0d);//your coords of course
targetLocation.setLongitude(0.0d);
float distanceInMeters = targetLocation.distanceTo(myLocation);
...
Creating a new column based on if-elif-else condition
...
To formalize some of the approaches laid out above:
Create a function that operates on the rows of your dataframe like so:
def f(row):
if row['A'] == row['B']:
val = 0
elif row['A'] > row['B']:
val = 1
else:
val = -1
r...
How do I reset a sequence in Oracle?
...
Just be aware that the drop will invalidate any objects that depend on that sequence and they will have to be recompiled.
– Doug Porter
Dec 23 '11 at 18:57
...
What's a standard way to do a no-op in python?
...compound_stmts.html) – like e.g. as a sub-expression to an existing code idiom like a comprehension, or a lambda, or (god forbid) a string to be passed into eval(…) (which q.v. docs.python.org/3/library/functions.html#eval if you must).
– fish2000
Apr 23 '1...
Python non-greedy regexes
...
As the others have said using the ? modifier on the * quantifier will solve your immediate problem, but be careful, you are starting to stray into areas where regexes stop working and you need a parser instead. For instance, the string "(foo (ba...
Replace a newline in TSQL
...uld like to replace (or remove) a newline character in a TSQL-string.
Any Ideas?
12 Answers
...
:after vs. ::after
...Teoharov Specifically, you can use :after and ::after interchangeably with identical behaviour with the exception of IE8 which, as the question notes, requires the single colon.
– Dominic
Jul 31 '18 at 0:42
...
Rails migrations: self.up and self.down versus change
... rollback? It's not possible, so you need to define the down method.
As said, I suggest you to read the Rails Migrations Guide.
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Nginx not picking up site in sites-enabled?
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I had the same problem. It was because I had accidentally used a relative path with the symbolic link.
Are you sure you used full paths, e.g.:
ln -s /etc/nginx/sites-available/example.com.conf /etc/nginx/sites-enabled/example.com.conf
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