BitcoinLib v0.4.7

View Source BitcoinLib.Script.Opcodes.Stack.IfDup (BitcoinLib v0.4.7)

Based on https://en.bitcoin.it/wiki/Script

Word OP_IFDUP Opcode 115 Hex 0x73 Input x Output x / x x If the top stack value is not 0, duplicate it.

Link to this section Summary

Types

t()

Functions

encode()

Returns <<0x73>>

execute(opcode, stack)

If the top stack value is not 0, duplicate it.

v()

Returns 0x73

Link to this section Types

Link to this type

t()

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@type t() :: BitcoinLib.Script.Opcodes.Stack.IfDup

Link to this section Functions

Link to this function

encode()

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Returns <<0x73>>

examples

 Examples 

iex> BitcoinLib.Script.Opcodes.Stack.IfDup.encode()
<<0x73>>
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execute(opcode, stack)

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@spec execute(t(), list()) :: {:ok, list()} | {:error, binary()}

If the top stack value is not 0, duplicate it.

examples

 Examples 

iex> stack = [4, 3]
...> %BitcoinLib.Script.Opcodes.Stack.IfDup{}
...> |> BitcoinLib.Script.Opcodes.Stack.IfDup.execute(stack)
{:ok, [4, 4, 3]}
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v()

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@spec v() :: 115

Returns 0x73

examples

 Examples 

iex> BitcoinLib.Script.Opcodes.Stack.IfDup.v()
0x73