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Puppydrum64 (talk | contribs) m (→{{header|ARM Assembly}}: formatting) |
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=={{header|Vlang}}== |
=={{header|Vlang}}== |
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<lang vlang>const ( |
<lang vlang>const ( |
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max_depth = 256 |
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) |
) |
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struct Stack { |
struct Stack { |
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mut: |
mut: |
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data []f32 = []f32{len: max_depth} |
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depth int |
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} |
} |
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fn ( |
fn (mut s Stack) push(v f32) { |
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if s.depth >= max_depth { |
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return |
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} |
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println('Push: ${v:3.2f}') |
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s.data[s.depth] = v |
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s.depth++ |
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} |
} |
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fn ( |
fn (mut s Stack) pop() ?f32 { |
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if s.depth > 0 { |
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s.depth-- |
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result := s.data[s.depth] |
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println('Pop: top of stack was ${result:3.2f}') |
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return result |
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} |
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return error('Stack Underflow!!') |
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} |
} |
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fn (s Stack) peek() ?f32 { |
fn (s Stack) peek() ?f32 { |
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if s.depth > 0 { |
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result := s.data[s.depth - 1] |
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println('Peek: top of stack is ${result:3.2f}') |
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return result |
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} |
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return error('Out of Bounds...') |
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} |
} |
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fn (s Stack) empty() bool { |
fn (s Stack) empty() bool { |
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return s.depth == 0 |
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} |
} |
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fn main() { |
fn main() { |
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mut stack := Stack{} |
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println('Stack is empty? ' + if stack.empty() { 'Yes' } else { 'No' }) |
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stack.push(5.0) |
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stack.push(4.2) |
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println('Stack is empty? ' + if stack.empty() { 'Yes' } else { 'No' }) |
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stack.peek() or { return } |
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| ⚫ | |||
return |
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} |
stack.pop() or { return } |
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| ⚫ | |||
return |
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} |
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stack.pop() or { |
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return |
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} |
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} |
} |
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</lang> |
</lang> |
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