![dapp-a-day-13 2x](https://cloud.githubusercontent.com/assets/6280810/17942379/6bbf1b1c-6a37-11e6-84a9-89bf71ae30f5.png)


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Today's dapp is the beginning of an isolated repo specifically for exploring
quirks and edge cases of solidity and the EVM.

https://github.com/nexusdev/solidity-quirks

Right now it has two case studies. The first explores solidity call semantics edge cases:  undefined code, throwing in different situations, etc:

https://github.com/nexusdev/solidity-quirks/blob/master/contracts/fallback_tests.sol

The second is a test of the **"delivery boy"** concept
for delivering ETH without triggering code in the recipient:

https://github.com/nexusdev/solidity-quirks/blob/master/contracts/delivery_test.sol

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![dapp-a-day-12-head copy 2x](https://cloud.githubusercontent.com/assets/6280810/17942378/6bbb1512-6a37-11e6-81e6-ab4cd514ad5d.png)

`Recent articles`
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[Dapp-a-day 12: DSBase – a reasonable base class](https://steemit.com/ethereum/@nexusdev/dapp-a-day-12-ds-base)
[Dapp-a-day 11: Whitelist (Boring!)](https://steemit.com/ethereum/@nexusdev/dapp-a-day-11-whitelist-boring)
[Dapp-a-day 10: Cross-Chain BTC Trade via BTC-Relay](https://steemit.com/ethereum/@nikolai/dapp-a-day-10-cross-chain-btc-trade-via-btc-relay)
[Dapp-a-day 9: Reverse ("Demanding") Token Auction](https://steemit.com/ethereum/@nikolai/dapp-a-day-9-reverse-demanding-token-auction)
[Dapp-a-day 8: Splittable Token Auction](https://steemit.com/ethereum/@nikolai/dapp-a-day-8-splittable-token-auction)
[Dapp-a-day 7: OTC Token Trades](https://steemit.com/ethereum/@nikolai/dapp-a-day-7-otc-token-trades)
[Dapp-a-day 6: Upgradeable Tokens](https://steemit.com/ethereum/@nikolai/dapp-a-day-6-upgradeable-tokens)#
[Dapp-a-day 5: Easy Multisig](https://steemit.com/ethereum/@nikolai/dapp-a-day-5-easy-multisig)
[Dapp-a-day 4: Access Control via auth](https://steemit.com/ethereum/@nikolai/dapp-a-day-4-access-control-via-auth)

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[Nexus Development](https://nexusdev.us/)
[nexusdev@github](https://github.com/nexusdev)