From 4e037281acaf74c907f68e6227d6aa1b8847c78d Mon Sep 17 00:00:00 2001 From: Federico Bond Date: Mon, 11 Dec 2017 18:00:15 -0300 Subject: Error on duplicated super constructor calls --- docs/contracts.rst | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'docs') diff --git a/docs/contracts.rst b/docs/contracts.rst index f8a44fb3..0dd9845c 100644 --- a/docs/contracts.rst +++ b/docs/contracts.rst @@ -1034,9 +1034,12 @@ the base constructors. This can be done in two ways:: constructor(uint _x) public { x = _x; } } - contract Derived is Base(7) { - constructor(uint _y) Base(_y * _y) public { - } + contract Derived1 is Base(7) { + constructor(uint _y) public {} + } + + contract Derived2 is Base { + constructor(uint _y) Base(_y * _y) public {} } One way is directly in the inheritance list (``is Base(7)``). The other is in @@ -1046,8 +1049,9 @@ do it is more convenient if the constructor argument is a constant and defines the behaviour of the contract or describes it. The second way has to be used if the constructor arguments of the base depend on those of the -derived contract. If, as in this silly example, both places -are used, the modifier-style argument takes precedence. +derived contract. Arguments have to be given either in the +inheritance list or in modifier-style in the derived constuctor. +Specifying arguments in both places is an error. .. index:: ! inheritance;multiple, ! linearization, ! C3 linearization -- cgit v1.2.3