| Hello World |   freesolidityeasyapp |
| Value Types | freesolidityeasydata |
| Function | freesolidityeasyfunction |
| State Variables | solidityeasydata |
| Local Variables | solidityeasydata |
| Global Variables | solidityeasydata |
| View and Pure Functions | solidityeasyfunction |
| Counter | solidityeasyapp |
| Default Values | solidityeasydata |
| Constants | solidityeasydata |
| If and Else | solidityeasycontrol flow |
| For and While Loops | solidityeasycontrol flow |
| Error Handling | solidityeasyerror |
| Function Modifier | solidityeasyfunction |
| Constructor | solidityeasyfunction |
| Ownable | solidityeasyapp |
| Function Outputs and Destructuring Assignment | soliditymediumfunction |
| Array | soliditymediumdata |
| Mapping | soliditymediumdata |
| Structs | soliditymediumdata |
| Enum | soliditymediumdata |
| Data Locations | soliditymediumdata |
| Simple Storage | soliditymediumapp |
| Todo List | soliditymediumapp |
| Iterable Mapping | soliditymediumapp |
| Array Shift | soliditymediumapp |
| Array Replace Last | soliditymediumapp |
| Events | soliditymediumevent |
| Inheritance - Override | soliditymediuminheritance |
| Multiple Inheritance | soliditymediuminheritance |
| Calling Parent Constructors | soliditymediuminheritance |
| Calling Parent Functions | soliditymediuminheritance |
| Visibility | soliditymediuminheritancefunction |
| Immutable | soliditymediumdata |
| Payable | soliditymediumpayment |
| Fallback | soliditymediumpaymentfunction |
| Sending Ether | soliditymediumpayment |
| Ether Wallet | soliditymediumapp |
| Calling Other Contracts | soliditymediumcall other contract |
| Interface | soliditymediumcall other contract |
| Call | solidityhardfunctioncall other contract |
| Delegatecall | solidityhardfunctioncall other contract |
| New | soliditymediumcall other contract |
| Library | soliditymediumcall other contract |
| Hash Function | soliditymediumcrypto |
| Verifying Signature | solidityhardcrypto |
| Access Control | soliditymediumapp |
| Deleting Contracts | solidityhardcall other contract |
| Piggy Bank | solidityhardapp |
| ERC20 | freesolidityhardapp |
| Multi Sig Wallet | freesolidityhardapp |
| Re-Entrancy | freesolidityhardctfsecurity |
| Seven Eth | soliditymediumctfsecurity |
| King of Eth | soliditymediumctfsecurity |
| Wallet Hijack | solidityhardctfsecurity |
| Misaligned Storage | solidityhardctfsecurity |
| Bypass Contract Size | solidityhardctfsecurity |
| Multi Token Bank | solidityhardctfsecurity |
| ETH Flash Loan | solidityhardctfsecurity |
| ERC20 Flash Loan | solidityhardctfsecurity |
| Function Selector | soliditymediumctfsecurity |
| Dutch Auction | soliditymediumapp |
| English Auction | solidityhardapp |
| ERC721 | freesolidityhardapp |
| Reentrancy Guard | soliditymediumfunctionsecurity |
| Multi Call | solidityhardappcall other contract |
| Create2 | soliditymediumcall other contract |
| Signature Replay Attack | soliditymediumctfcrypto |
| Hodl | soliditymediumapp |
| Crowd Fund | soliditymediumapp |
| Multi Delegatecall | solidityhardapp |
| Function Selector Clash | solidityhardctfsecurity |
| Time Lock | solidityhardapp |
| Gas Golf | soliditymediumgas optimization |
| WETH | soliditymediumdefiapp |
| WETH Bank Hack | solidityhardctfcrypto |
| Vault | soliditymediumdefi |
| Constant Sum AMM | soliditymediumdefi |
| Hello World | freevypereasyapp |
| Data Types - Values | freevypereasydata |
| Data Types - References | freevypereasydata |
| Function Intro | freevypereasyfunction |
| Internal and External Functions | freevypereasyfunction |
| View and Pure Functions | freevypereasyfunction |
| Constructor | freevypereasyfunction |
| Private and Public State Variables | freevypereasydata |
| Constants | freevypereasydata |
| If Else | freevypereasycontrol flow |
| For Loop | freevypereasycontrol flow |
| Error | freevypereasyerror |
| Event | freevypereasyevent |
| Payable | freevypermediumpayment |
| Default Function | freevypermediumpaymentfunction |
| Send Ether | freevypermediumpayment |
| Raw Call | freevyperhardfunctioncall other contract |
| Delegate Call | freevyperhardfunctioncall other contract |
| Interface | freevypermediumcall other contract |
| Hash Function | freevypermediumcrypto |
| Verify Signature | freevyperhardcrypto |
| Create Forwarder To | freevyperhardcall other contract |
| Re-entrancy Lock | freevyperhardsecurity |
| Self Destruct | freevypermediumcall other contract |
| Hello CTF | freevypermediumctfsecurity |
| Forgot Access Control | freevypermediumctfsecurity |
| Drain Wallet | freevypermediumctfsecurity |
| Immutable | freevypereasydata |
| Dynamic Arrays | freevypermediumdata |