How to use Library with 1 File on browser solidity?

Question

I use browser solidity. Now, I wanna create this C Contract.

But, I have a message "Deploying and liking required libraries" on the right side of the picture. I have already create Math Library, and I can create Math Library, but I take this message.

What do I do to create C contract on browser solidity?

Postscript： This is my opinion, the cause is in Bytecode.

There are "__Math:Math_______________________________" in Bytecode. I think I should replace this text to the Math Library address, But I can't change Bytecode on browser solidity. Dose anyone know how to solve it?

Answer 1

I'v recreated your example and it works well for me. I have tested the following variations to reproduce without success. Note I have the same (73__Math:Math_____________________________6377) in my bytecode.

• Not naming the file Math to avoid confusing with the name of library.
• having different pragma
• changing function and contract names
• changing the compiler version

So on my side all works fine.

So try the following:

• close your browser and clear your cache and try again : Solidity browser has some habits of not being fully stable
• go in console mode and run the compilation with solc directly, to verify the problem is not in your code rather than solidity
• progressively remove elements of the code (pieces by pieces) and try recompiling + creating the contract each time so identify what exact piece of code is causing the problem.

Personally, now that I have learned the basic of solidity I do not use the browser anymore (only for quick tests) but I am using XCode IDE of Mac os with custom solc builder.

Good luck and let us know the results.