Category talk:Wren-seq: Difference between revisions

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var count = a.count

var indices = []

if (count == 0) return [false, 0, indices]

if (start < 0) start = count + start

for (i in start...count) {

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// Returns the number of elements in the stack.

count { _stack.count }

// Returns whether or not the stack is empty.

isEmpty { count == 0 }

// Removes all elements from the stack.

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// Returns the last item on the stack without removing it.

// Returns null if the stack is empty.

peek() { (!isEmpty) ? _stack[-1] : null }

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push(item) { _stack.add(item) }

// Adds 'items' (in order) to the stack and returns them.

// Adds a sequence of 'items' (in order) to the stack and returns them.

pushAll(items) { _stack.addAll(items) }

// Removes the last item from the stack and returns it.

// Returns null if the stack is empty.

pop() {

var item = peek()

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// Clones the stack.

clone() {

var n = Stack.new()

var s = Stack.new()

n.pushAll(Lst.clone(_stack))

s.pushAll(Lst.clone(_stack))

return n

return s

}