I am following the instructions Building A Smart Contract - The Fuel Book
When I try to build the smart contract the following errors are shown:
~/fuel-project/counter-contract$ forc build
WARNING! unused manifest key: constants
WARNING! unused manifest key: constants
Compiling library core (/home/alfonso/.forc/git/checkouts/std-9be0d6062747ea7/2d16d70ab9d5ab0de0255941048f811b6d07c6b1/sway-lib-core)
Compiling library std (git+https://github.com/fuellabs/sway?tag=v0.38.0#2d16d70ab9d5ab0de0255941048f811b6d07c6b1)
Compiling contract counter-contract (/home/alfonso/fuel-project/counter-contract)
warning
→ /home/alfonso/fuel-project/counter-contract/src/main.sw:4:5
|
2 |
3 | storage {
4 | counter: u64 = 0,
| ------- This storage declaration is never accessed and can be removed.
5 | }
|
error
→ /home/alfonso/fuel-project/counter-contract/src/main.sw:18:9
|
16 |
17 | fn count() → u64 {
18 | storage.counter
| ^^^^^^^^^^^^^^^ Mismatched types.
expected: u64
found: StorageKey.
help: Implicit return must match up with block’s type.
19 | }
|
error
→ /home/alfonso/fuel-project/counter-contract/src/main.sw:18:9
|
16 |
17 | fn count() → u64 {
18 | storage.counter
| ^^^^^^^^^^^^^^^ Mismatched types.
expected: u64
found: StorageKey.
help: Function body’s return type does not match up with its return type annotation.
19 | }
|
error
→ /home/alfonso/fuel-project/counter-contract/src/main.sw:23:9
|
21 |
22 | fn increment() {
23 | storage.counter = storage.counter + 1;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This expression is not valid on the left hand side of a reassignment.
24 | }
25 | }
|
Aborting due to 3 errors.
Error: Failed to compile counter-contract
CAn anyone help me?
