https://github.com/bitcoin/bitcoin/blob/master/src/script/interpreter.cpp
Line 22 => Where is declare "ScriptError" ? What does the "*" mean ?
"inline bool set_success(ScriptError* ret)"
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1 Answer
The enum ScriptError is defined in https://github.com/bitcoin/bitcoin/blob/master/src/script/script_error.h, and the * means that set_success requires you to pass a pointer to an enum value rather than the enum value itself.
I have to tell you, however, that if you are asking questions like "What does the "*" mean?", then you are going to have a hard time understanding C++ code. I highly recommend doing some tutorials on C++ programming before going any further.
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I know about pointers I was just disturbed by the fact that it is wrote "ScriptError*" and not "*ScriptError"– smoumouJun 27, 2016 at 17:11
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*ScriptErrorwould mean dereferencing a variable named "ScriptError". For example, see line 25 interpreter.cpp, whereretis dereferenced in order to assign a new value. I think you are thinking of writingset_success(ScriptError* ret)likeset_success(ScriptError *ret), instead. In C++, both mean the same thing.– JestinJun 27, 2016 at 17:22 -
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std::vector<unsigned char> vchSigCopy(vchSig.begin(), vchSig.begin() + vchSig.size() - 1);– smoumouJun 28, 2016 at 11:16
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It's creating a copy of
vchSigcalledvchSigCopy. However, it's neither possible nor appropriate for me to teach you C++ in the comments. Some of these questions you've been asking are very fundamental concepts in C++. You really need to take some time to learn the language if you want to understand Bitcoin's code.– JestinJun 28, 2016 at 12:28