diff options
Diffstat (limited to 'docs/control-structures.rst')
| -rw-r--r-- | docs/control-structures.rst | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/docs/control-structures.rst b/docs/control-structures.rst index f3c351dd..f18e1e10 100644 --- a/docs/control-structures.rst +++ b/docs/control-structures.rst @@ -293,12 +293,7 @@ Solidity internally allows tuple types, i.e. a list of objects of potentially di // Common trick to swap values -- does not work for non-value storage types. (x, y) = (y, x); // Components can be left out (also for variable declarations). - // If the tuple ends in an empty component, - // the rest of the values are discarded. - (data.length,) = f(); // Sets the length to 7 - // The same can be done on the left side. - // If the tuple begins in an empty component, the beginning values are discarded. - (,data[3]) = f(); // Sets data[3] to 2 + (data.length,,) = f(); // Sets the length to 7 // Components can only be left out at the left-hand-side of assignments, with // one exception: (x,) = (1,); @@ -307,6 +302,11 @@ Solidity internally allows tuple types, i.e. a list of objects of potentially di } } +.. note:: + Prior to version 0.4.24 it was possible to assign to tuples of smaller size, either + filling up on the left or on the right side (which ever was empty). This is + now deprecated, both sides have to have the same number of components. + Complications for Arrays and Structs ------------------------------------ |