Illuminate contest - UnusualTurtle's results

1. ++I COSTS LESS GAS THAN ++I, ESPECIALLY WHEN IT’S USED IN FOR-LOOPS (--I/I-- TOO)

Examples of this issue in the codebase:

1. File: lender\Lender.sol (Line 96)

2. File: lender\Lender.sol (Line 289)

2. X = X + Y IS CHEAPER THAN X += Y

Examples of this issue in the codebase:

1. File: lender\Lender.sol (Line 279)

2. File: lender\Lender.sol (Line 283)

3 STATE VARIABLES ONLY SET IN THE CONSTRUCTOR SHOULD BE DECLARED IMMUTABLE

Examples of this issue in the codebase: redeemer\Redeemer.sol (Line 54-L56)

4. USING > 0 COSTS MORE GAS THAN != 0 WHEN USED ON A UINT

Example of this issue in the codebase:

1. File: lender\Lender.sol (Line 681)

5. MINIMIZE THE NUMBER OF EXPENSIVE SLOAD CALL

Examples of this issue in the codebase:

1. File: redeemer\Redeemer.sol lender can be cached (Line 128)

2. File: redeemer\Redeemer.sol lender can be cached (Line 177)