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author | Aaron Colaço <aaroncolaco.work@gmail.com> | 2018-02-24 01:47:48 +0800 |
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committer | Aaron Colaço <aaroncolaco.work@gmail.com> | 2018-02-24 02:39:49 +0800 |
commit | ef7fbf8d0c7310142c39fb7a940e0732e245754a (patch) | |
tree | 8d94f324a5078f8d19b30aaa989d32c70d2e57f6 | |
parent | 272262ea9908f2c8a12e0a8e367393f2a49ba3ca (diff) | |
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Fix example; closes #3582
-rw-r--r-- | docs/frequently-asked-questions.rst | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/docs/frequently-asked-questions.rst b/docs/frequently-asked-questions.rst index a6bead29..3c83cbc7 100644 --- a/docs/frequently-asked-questions.rst +++ b/docs/frequently-asked-questions.rst @@ -40,9 +40,9 @@ Is there a decompiler available? ================================ There is no exact decompiler to Solidity, but -`Porosity <https://github.com/comaeio/porosity>`_ is close. -Because some information like variable names, comments, and -source code formatting is lost in the compilation process, +`Porosity <https://github.com/comaeio/porosity>`_ is close. +Because some information like variable names, comments, and +source code formatting is lost in the compilation process, it is not possible to completely recover the original source code. Bytecode can be disassembled to opcodes, a service that is provided by @@ -542,12 +542,27 @@ contract level) with ``arrayname.length = <some new length>;``. If you get the :: - int8[] memory memArr; // Case 1 - memArr.length++; // illegal - int8[5] storageArr; // Case 2 - somearray.length++; // legal - int8[5] storage storageArr2; // Explicit case 2 - somearray2.length++; // legal + // This will not compile + + pragma solidity ^0.4.18; + + contract C { + int8[] dynamicStorageArray; + int8[5] fixedStorageArray; + + function f() { + int8[] memory memArr; // Case 1 + memArr.length++; // illegal + + int8[5] storage storageArr = fixedStorageArray; // Case 2 + storageArr.length++; // illegal + + int8[] storage storageArr2 = dynamicStorageArray; + storageArr2.length++; // legal + + + } + } **Important note:** In Solidity, array dimensions are declared backwards from the way you might be used to declaring them in C or Java, but they are access as in |