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Java 8 Distinct by property
...te<T> distinctByKey(Function<? super T, ?> keyExtractor) {
Set<Object> seen = ConcurrentHashMap.newKeySet();
return t -> seen.add(keyExtractor.apply(t));
}
Then you can write:
persons.stream().filter(distinctByKey(Person::getName))
Note that if the stream is ordered...
How to change or add theme to Android Studio?
...
File->Settings->Editor->Colors & Fonts-> In scheme name select Darcula and apply to see a awesome dark background theme editor
Android Studio 3.1.2
File->Settings->Editor->Color Scheme-> In scheme name se...
rbenv not changing ruby version
...ME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
NOTE:
Make sure it's the last setting in your ~/.bash_profile . I ran into an issue where I installed a program that updated my .bash_profile and reset PATH.
Finally, make sure your $HOME folder doesn't have a .ruby-version file that you may have created ...
Instantiate and Present a viewController in Swift
I started taking a look of the new Swift on Xcode 6 , and I tried some demo projects and tutorials. Now I am stuck at:
1...
What's the difference between utf8_general_ci and utf8_unicode_ci?
...curately in a wide range of languages.
utf8mb4_general_ci is a simplified set of sorting rules which aims to do as well as it can while taking many short-cuts designed to improve speed. It does not follow the Unicode rules and will result in undesirable sorting or comparison in some situations, su...
Underlining text in UIButton
...der;
CGContextRef contextRef = UIGraphicsGetCurrentContext();
// set to same colour as text
CGContextSetStrokeColorWithColor(contextRef, self.titleLabel.textColor.CGColor);
CGContextMoveToPoint(contextRef, textRect.origin.x, textRect.origin.y + textRect.size.height + descender);
...
How to increase code font size in IntelliJ?
...imple as Ctrl + mouse wheel. If this doesn't work for you, enable File → Settings → Editor → General → (checked) Change font size (Zoom) with Ctrl+Mouse Wheel.
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UITextView that expands to text using auto layout
...
The view containing UITextView will be assigned its size with setBounds by AutoLayout. So, this is what I did. The superview is initially set up all the other constraints as they should be, and in the end I put one special constraint for UITextView's height, and I saved it in an instanc...
Accessing private member variables from prototype-defined functions
...ned on the prototype to have access to them, you should define getters and setters on the this object, which the prototype methods (along with everything else) will have access to. For example:
function Person(name, secret) {
// public
this.name = name;
// private
var secret = secr...
Setting EditText imeOptions to actionNext has no effect
...
Try setting your EditText's height as wrap_content.
– Surendra Kumar
Nov 3 '14 at 23:06
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