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Merge pull request #2634 from ethereum/chriseth-patch-1

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Clarify internal function types
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Alex Beregszaszi 2017-08-11 16:59:22 +01:00 committed by GitHub
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1 changed files with 3 additions and 2 deletions
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docs/types.rst
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@ -321,7 +321,7 @@ can be assigned from functions and function parameters of function type
can be used to pass functions to and return functions from function calls. can be used to pass functions to and return functions from function calls.
Function types come in two flavours - *internal* and *external* functions: Function types come in two flavours - *internal* and *external* functions:
Internal functions can only be used inside the current contract (more specifically, Internal functions can only be called inside the current contract (more specifically,
inside the current code unit, which also includes internal library functions inside the current code unit, which also includes internal library functions
and inherited functions) because they cannot be executed outside of the and inherited functions) because they cannot be executed outside of the
context of the current contract. Calling an internal function is realized context of the current contract. Calling an internal function is realized
@ -340,7 +340,8 @@ function type should not return anything, the whole ``returns (<return types>)``
part has to be omitted. part has to be omitted.
By default, function types are internal, so the ``internal`` keyword can be By default, function types are internal, so the ``internal`` keyword can be
omitted. omitted. In contrast, contract functions themselves are public by default,
only when used as the name of a type, the default is internal.
There are two ways to access a function in the current contract: Either directly There are two ways to access a function in the current contract: Either directly
by its name, ``f``, or using ``this.f``. The former will result in an internal by its name, ``f``, or using ``this.f``. The former will result in an internal