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How to get hosting Activity from a view?
...
I like this solution written in Kotlin
tailrec fun Context?.getActivity(): Activity? = when (this) {
is Activity -> this
else -> (this as? ContextWrapper)?.baseContext?.getActivity()
}
Usage in View class
context.getActivity()
Decompiled code:
public stati...
How to remove an item from an array in AngularJS scope?
...-click="delete($index)">Delete</a>
Controller:
$scope.delete = function ( idx ) {
var person_to_delete = $scope.persons[idx];
API.DeletePerson({ id: person_to_delete.id }, function (success) {
$scope.persons.splice(idx, 1);
});
};
...
How to check if a string contains only digits in Java [duplicate]
... all be "true"
System.out.println("1".matches(regex));
System.out.println("12345".matches(regex));
System.out.println("123456789".matches(regex));
// negative test cases, should all be "false"
System.out.println("".matches(regex));
System.out.println("foo".matches(regex));
System.out.println("aa123...
How to go about formatting 1200 to 1.2k in java
..., 999, 1_000, -5_821, 10_500, -101_800, 2_000_000, -7_800_000, 92_150_000, 123_200_000, 9_999_999, 999_999_999_999_999_999L, 1_230_000_000_000_000L, Long.MIN_VALUE, Long.MAX_VALUE};
String[] expected = {"0", "5", "999", "1k", "-5.8k", "10k", "-101k", "2M", "-7.8M", "92M", "123M", "9.9M", "999P", "...
How to properly URL encode a string in PHP?
...le:
$dataString = "https://www.google.pl/search?q=PHP is **great**!&id=123&css=#kolo&email=me@liszka.com)";
$dataStringUrlEncodedRFC1738 = UrlEncoder::encode($dataString, UrlEncoder::STANDARD_RFC1738);
$dataStringUrlEncodedRFC3986 = UrlEncoder::encode($dataString, UrlEncoder::STANDARD_R...
Getting started with F# [closed]
...kering (May 2007)
Beginning F# by Robert Pickering (Dec 2009)
Real World Functional Programming by Tomas Petricek & Jon Skeet (Jan 2010)
Visual F# 2010 For Technical Computing by Dr Jon Harrop (Apr 2010)
Friendly F# by Giulia Costantini and Giuseppe Maggiore (Aug 2011)
Tools needed
Visual ...
RegEx to extract all matches from string using RegExp.exec
...s:
var re = /\s*([^[:]+):\"([^"]+)"/g;
var s = '[description:"aoeu" uuid:"123sth"]';
var m;
do {
m = re.exec(s);
if (m) {
console.log(m[1], m[2]);
}
} while (m);
Try it with this JSFiddle: https://jsfiddle.net/7yS2V/
...
javascript find and remove object in array based on key value
... == 88
Simply filter by the opposite predicate:
var data = $.grep(data, function(e){
return e.id != id;
});
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Remove/hide a preference from the screen
...ragment instead of PreferenceActivity.
https://developer.android.google.cn/reference/android/support/v7/preference/Preference.html#setVisible(boolean)
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Difference between dict.clear() and assigning {} in Python
...ing methods are always useful if the original object is not in scope:
def fun(d):
d.clear()
d["b"] = 2
d={"a": 2}
fun(d)
d # {'b': 2}
Re-assigning the dictionary would create a new object and wouldn't modify the original one.
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