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Update docs.

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Daniel Kirchner 2018-07-11 14:47:37 +02:00
parent aa81ac4456
commit df8bbffd8e
1 changed files with 6 additions and 3 deletions
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docs/frequently-asked-questions.rst
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@ -273,9 +273,11 @@ of variable it concerns:
* state variables are always in storage * state variables are always in storage
* function arguments are in memory by default * function arguments are in memory by default
* local variables of struct, array or mapping type reference storage by default * local variables of mapping type reference storage by default
* local variables of value type (i.e. neither array, nor struct nor mapping) are stored in the stack * local variables of value type (i.e. neither array, nor struct nor mapping) are stored in the stack
For local variables of struct or array type the storage location has to be stated explicitly.
Example:: Example::
pragma solidity ^0.4.0; pragma solidity ^0.4.0;
@ -309,8 +311,9 @@ carry back to ``data1`` or ``data2``.
.. warning:: .. warning::
Prior to version 0.5.0, a common mistake was to declare a local variable and assume that it will Prior to version 0.5.0, a common mistake was to declare a local variable and assume that it will
be created in memory, although it will be created in storage. Using such a variable without initializing be created in memory, although it will be created in storage. Using such a variable without initializing
it could lead to unexpected behavior. Starting from 0.5.0, however, storage variables have to be initialized, could lead to unexpected behavior. Starting from 0.5.0, however, the storage location for local variables
which should prevent these kinds of mistakes. has to be specified explicitly and local storage variables have to be initialized, which should prevent
these kinds of mistakes.
****************** ******************
Advanced Questions Advanced Questions