Skill tree
The hanging list linked list · physics and blocks
{{ goalText }}
this LinkedList
head
size {{ sizeText }}
{{ p.name }}
Node {{ n.oid }}
data {{ n.dataText }}
next
the void · a node nothing reaches falls here
{{ hintIcon }}
{{ hintTitle }}. {{ hintBody }}
Local variables are pinned to the rail. A node stays up only while you can reach it from head or a variable; everything else falls into the void. Tap lines below to commit them; grab any node and let it swing.
{{ l.n }}{{ l.text }}
One line per tap · one visible consequence
Object data = {{ dataVal }};  // provided