Top "Collect" questions

ruby using the "&:methodname" shortcut from array.map(&:methodname) for hash key strings rather than methodname

Most ruby developers know how to save a few keystrokes by doing something like this: array.map(&:methodname) rather …

ruby dictionary hash collect

Java stream collect to map with multiple keys

I thought I was getting pretty good at Java 8 streams, but then... I have a Foo interface: public interface Foo { …

java key java-stream collect

PHP Laravel 5.5 collections flatten and keep the integer keys?

I have the following array : $array = [ '2' => ['3' => ['56' => '2'], '6' => […

php laravel flatten collect

Java 8 stream join and return multiple values

I'm porting a piece of code from .NET to Java and stumbled upon a scenario where I want to use …

java dictionary java-8 java-stream collect

How can I use a named scope in my model against an array of items?

I know that I can do a query for recent books based on an array as in scope :recent_books, …

ruby-on-rails ruby select model collect

How to Use COLLECT with VARCHAR2 Oracle 10g

I'm trying to get the COLLECT function to work for me. I'm using 10g and therefore found that LISTAGG and …

sql oracle10g collect listagg

Java collect with lambda expression example

I was trying to convert this String r = ""; for ( Persona p : list ) { r += p.lastName; } To stream().filter.collect() form, …

java lambda java-stream collect

I want my memory back! How can I truly dispose a control?

I have an application I am making that creates a large number of windows controls (buttons and labels etc). They …

c# memory controls dispose collect