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How to create our own Listener interface in android?
Could someone help me to create user defined listener interface with some code snippets?
9 Answers
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How do I Search/Find and Replace in a standard string?
...ing some form of regular expression parsing -- instead using only a direct interpretation of the from characters.
– Brent Bradburn
Jun 23 '16 at 14:36
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Is there a VB.NET equivalent of C# out parameters?
...rect equivalent to C# out function parameters, where the variable passed into a function does not need to be initialised?
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Full Screen DialogFragment in Android
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void showDialog() {
FragmentTransaction ft = getFragmentManager().beginTransaction();
DialogFragment newFragment = MyDialogFragment.newInstance();
newFragment.show(ft, "dialog");
}
public static class MyDialogFragment extends DialogFragment {
static MyDialogFragment newInstance()...
What's the @ in front of a string in C#?
... a verbatim string literal - anything in the string that would normally be interpreted as an escape sequence is ignored.
So "C:\\Users\\Rich" is the same as @"C:\Users\Rich"
There is one exception: an escape sequence is needed for the double quote. To escape a double quote, you need to put two dou...
Use cases for the 'setdefault' dict method
...f it's dynamic.
For example, I need a dictionary to map strings to unique ints. defaultdict(int) will always use 0 for the default value. Likewise, defaultdict(intGen()) always produces 1.
Instead, I used a regular dict:
nextID = intGen()
myDict = {}
for lots of complicated stuff:
#stuff that...
Javascript: negative lookbehind equivalent?
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Lookbehind Assertions got accepted into the ECMAScript specification in 2018.
Positive lookbehind usage:
console.log(
"$9.99 €8.47".match(/(?<=\$)\d+(\.\d*)?/) // Matches "9.99"
);
Negative lookbehind usage:
console.log(
"$9.99 ...
What is the string concatenation operator in Oracle?
...ings (only) and creating YYYYMMDD from YYYY-MM-DD as follows (i.e. without converting to date format):
CONCAT(CONCAT(SUBSTR(DATECOL,1,4),SUBSTR(DATECOL,6,2)),SUBSTR(DATECOL,9,2)) AS YYYYMMDD
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Difference between spring @Controller and @RestController annotation
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I think @RestController also converts the response to JSON/XML automatically.
– arnabkaycee
Oct 21 '16 at 13:05
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How to implement the activity stream in a social network
...activities by activity ID or by using a set of friend IDs with time constraints.
Publish the activity IDs to Redis whenever an activity record is created, adding the ID to an "activity stream" list for every user who is a friend/subscriber that should see the activity.
Query Redis to get the act...