Swap.md

Swap

Use one line to swap two variables without writing a function or temporary variable that needs more gas.

Preview

Testing on the Swap.t.sol file,

    Running 2 tests for test/Swap.t.sol:SwapTest
    [PASS] testSingleSwap() (gas: 7475)
    Logs:
    Single Swap Gas: 5314

    Traces:
    [7475] SwapTest::testSingleSwap()
        ├─ [282] Swap::singleSwap(10, 20) [staticcall]
        │   └─ ← 20, 10
        ├─ emit log_named_uint(key: Single Swap Gas, val: 5314)
        └─ ← ()

    [PASS] testTempSwap() (gas: 7475)
    Logs:
    Temp Swap Gas: 5336

    Traces:
    [7475] SwapTest::testTempSwap()
        ├─ [304] Swap::tempSwap(10, 20) [staticcall]
        │   └─ ← 20, 10
        ├─ emit log_named_uint(key: Temp Swap Gas, val: 5336)
        └─ ← ()

    Test result: ok. 2 passed; 0 failed; finished in 377.27µs

Guidelines

Use single line swap operations.