Questions tagged [abiencoderv2]

The new ABI encoder is able to encode and decode arbitrarily nested arrays and structs. It produces less optimal code (the optimizer for this part of the code is still under development).

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How to use initialize a bytes array with abi data?

To initialize a bytes array with the bool value True encoded as ABI data, I'm attempting to do it like this: bytes memory arr = '0x0000000000000000000000000000000000000000000000000000000000000001'; ...
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How to call an overloaded function in Truffle with ABIEncoderV2?

How do you call an overloaded function in Truffle when passing a struct using pragma experimental ABIEncoderV2;? contract MyContract { struct MyStruct { address param1; address param2; ...
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How can I return string array in solidity?

This is my struct: struct Token { address tokenAddress; uint256 minAmount; bool emergencyUnlock; TokenStatus status; string name; uint256 decimal; string thumbnailUrl; } ...
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Gas-efficient string concatenation

My use-case requires that I feed my contract with a long string (Base64 data), which requires to split it and send it over several transactions so as to not reach gas limit. Then the contract rebuilds ...
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1answer
23 views

AbiEncoderV2 encoding Tuple algorithm

Where can I find AbiEncoderV2 encoding Tuple algorithm? I would like to add Tuples support to a ruby library.
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1answer
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ABI encoding with tuples

I don't understand how ABI encoding with tuples work: f(uint8[], uint) with arguments [3], 4 accordingly https://abi.hashex.org produces: ...
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103 views

How to encode an object with ABIEncoder V2?

How to encode an object with ABIEncoder V2? For example, this one: { items: [ { str: "str", num: 5, bol: true } ] } Solidity struct: struct Item { string str; ...
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Solidity calldata for an array of structs

I'm trying to create the calldata offchain for an on-chain low-level call to a method that accepts an array of structs as an argument. I'm not sure how to encode the calldata for this. Here's a ...
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1answer
43 views

Passing more than 20 parameters in solidity

How to pass more than 20 parameters in solidity function? I have tried using array[] parameter that uses pragma ABIENCODERV2 experimental feature. But this feature cannot be used in production purpose....
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UnimplementedFeatureError: Variable inaccessible, too deep inside stack (17)

I'm getting this error, with no indication of which line of code or variable is responsible. I know it goes away when I comment out pragma experimental ABIEncoderV2; …but I need ABIEncoderV2 as I ...
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1answer
292 views

How to pass struct params in remix ide?

I have this smart contract: pragma solidity 0.5; pragma experimental ABIEncoderV2; contract TestStruct { struct User { string name; uint256 age; } mapping (bytes32 =&...
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Status of ABIEncoderV2 now

Do you know the current status of ABIEncoderV2? I want to know the current status of ABIEncoderV2 Live projects using ABIEncoderV2 right now Restriction on the normal encoder Risks of using ...