Questions tagged [c++]
All questions related to the use of C++ within the EOSIO framework
62
questions
1
vote
1
answer
230
views
Is it possible to compile a smart contract using g++ or clang?
I want to write and execute some unit tests on a smart contract outside of nodeos, but to do that I need to be able to compile the code the normal C++ way, using g++ or clang, so that I get object or ...
- 4,744
0
votes
2
answers
1k
views
Convert string to float or double
I am trying to convert a string to a float or double, however none of the standard C/C++ methods seem to work. I have tried:
atof
strtof
strtod
sscanf
In each case, I get an error message when ...
- 4,744
1
vote
1
answer
117
views
How to retrieve data from multi index table? i a=have stored data dynamically using emplace method now how to get it back as a Record?
I have used this code to store the data(name and marks) in the table, now i want to retrieve that data in the form of record. how can i get that?
void addmarks(account_name examiner, account_name ...
- 84
1
vote
1
answer
205
views
Error 30700002: Smart contract's apply function not exported; non-existent; or wrong type
I have written a smart contract and I want to start testing it, it contains an apply function, which currently checks for a transfer, and then calls the appropriate function:
void mycontract::apply(...
- 4,744
3
votes
3
answers
1k
views
Which IDE can I use for EOS C++ source code?
What I need is an IDE as advanced as Eclipse, that would tell me if certain imports are missing, variables not declared, compile errors, and so on... I am using Linux so Visual Studio won't work for ...
- 269
3
votes
2
answers
666
views
Building smart contract error: redefinition of 'time' as different kind of symbol typedef uint32_t time;
I am pretty desperate at this point to search for hints on this issue, though I am pretty sure it's because I'm new to C++ include system.
I am getting an error while trying to run a wasm executable ...
- 322
1
vote
1
answer
151
views
How to get current RAM price inside a contract in C++?
How can I programatically get the current(last) RAM price inside an EOS smart contract in C++?
I need to handle the data inside the smart contract for an experiment.
- 536
1
vote
1
answer
154
views
how to create an account except the way of using cleos?
guys!I am a beginner of eos.
As it is said on the title, i want to create accounts by the way other than using cleos.
I have traversed the doc of eos, but not seen the interface to create an account ...
- 25
-3
votes
2
answers
168
views
Setting up C++ developing environment
I'm a C++ dev and spent last months trying out solidity stuff but defintely want to try EOS now.
How do I get started to understand all the terms and various parts of EOS ?
I've seen gas works ...
- 1
7
votes
2
answers
410
views
What libraries are supported by contracts?
What libraries can be used when writing a contract in C++? What are the limitations? If I have a library I normally use and like, how do I compile it for use by contracts?
- 654
3
votes
1
answer
305
views
How can I call third party APIs from inside a smart contract at a set time or interval?
In a scenario where a smart contract needs to check against a third party service (Let's say an API with weather information from a trusted source like Weather.com) and make a decision on moving ...
- 131
9
votes
2
answers
640
views
Which version of C++ can I use in smart contracts?
Which version of C++ can I use to implement smart contracts?
For example: C++11, C++14 or C++17? Do we have any constant or doc where it is defined?
Also, in my understanding the code is sandboxed, ...
- 536