tap hop lenh duoc chay theo thu tu.
ban luyen
Solidity
lo trinh thuc hanh de hoc Solidity tu con so 0
dinh nghia truoc
Solidity la gi
Solidity dung de viet chi dan chinh xac. O day ban hoc theo lo trinh thuc hanh de hoc Solidity tu con so 0. Hay bat dau voi mot mo hinh: dau vao qua cac buoc roi thanh dau ra.
thong tin chay toi thieutep
Contract.solchay solc Contract.solthoi quen hoc mot phan nho cua Solidity, go vi du toi thieu roi chaygia tri la du lieu. bien la ten de giu du lieu.
mot viec nho co ten, nhan dau vao va tao ket qua.
Solidity compiler chay code trong Contract.sol.
doan code dau tien
dau ra chuong trinh
entry point output syntax uint256uint256 public total = 42;
dau ra 42pha he ngon ngu
cay pha he Solidity
xem Solidity den tu dau, gan voi ngon ngu nao, va nen hoc gi tiep.
phu hop cho lo trinh thuc hanh de hoc Solidity tu con so 0
tu con so 0
1doc mot quy tac2doan dau ra3go bang tri nho4chay kiem tra5lap lai voi mot thay doi
Ngan hang cau hoi
Tim truoc khi luyen
Chon giai doan hoac tim trong ngan hang cua ngon ngu nay roi mo bai tap.
Q 1Lua chonGiai doan 1 dinh nghia
Solidity cau 1
Solidity cau 1. Chon mo ta phu hop nhat voi in mot gia tri.
Q 2Lua chonGiai doan 1 dinh nghia
Solidity cau 2
Solidity cau 2. Chon mo ta phu hop nhat voi dat ten cho gia tri.
Q 3Lua chonGiai doan 1 dinh nghia
Solidity cau 3
Solidity cau 3. Chon mo ta phu hop nhat voi ham tai su dung.
Q 4Lua chonGiai doan 1 dinh nghia
Solidity cau 4
Solidity cau 4. Chon mo ta phu hop nhat voi tap hop co ban.
Q 5Lua chonGiai doan 1 dinh nghia
Solidity cau 5
Solidity cau 5. Chon mo ta phu hop nhat voi in mot gia tri.
Q 6Lua chonGiai doan 1 dinh nghia
Solidity cau 6
Solidity cau 6. Chon mo ta phu hop nhat voi dat ten cho gia tri.
Q 7Lua chonGiai doan 1 dinh nghia
Solidity cau 7
Solidity cau 7. Chon mo ta phu hop nhat voi ham tai su dung.
Q 8Lua chonGiai doan 1 dinh nghia
Solidity cau 8
Solidity cau 8. Chon mo ta phu hop nhat voi tap hop co ban.
Q 9Lua chonGiai doan 1 dinh nghia
Solidity cau 9
Solidity cau 9. Chon mo ta phu hop nhat voi in mot gia tri.
Q 10Lua chonGiai doan 1 dinh nghia
Solidity cau 10
Solidity cau 10. Chon mo ta phu hop nhat voi dat ten cho gia tri.
Q 11Lua chonGiai doan 1 dinh nghia
Solidity cau 11
Solidity cau 11. Chon mo ta phu hop nhat voi ham tai su dung.
Q 12Lua chonGiai doan 1 dinh nghia
Solidity cau 12
Solidity cau 12. Chon mo ta phu hop nhat voi tap hop co ban.
Q 13Lua chonGiai doan 1 dinh nghia
Solidity cau 13
Solidity cau 13. Chon mo ta phu hop nhat voi in mot gia tri.
Q 14Lua chonGiai doan 1 dinh nghia
Solidity cau 14
Solidity cau 14. Chon mo ta phu hop nhat voi dat ten cho gia tri.
Q 15Lua chonGiai doan 1 dinh nghia
Solidity cau 15
Solidity cau 15. Chon mo ta phu hop nhat voi ham tai su dung.
Q 16Lua chonGiai doan 1 dinh nghia
Solidity cau 16
Solidity cau 16. Chon mo ta phu hop nhat voi tap hop co ban.
Q 17Lua chonGiai doan 1 dinh nghia
Solidity cau 17
Solidity cau 17. Chon mo ta phu hop nhat voi in mot gia tri.
Q 18Lua chonGiai doan 1 dinh nghia
Solidity cau 18
Solidity cau 18. Chon mo ta phu hop nhat voi dat ten cho gia tri.
trac nghiem
Solidity cau 1
Solidity cau 1. Chon mo ta phu hop nhat voi in mot gia tri.
uint256 public total = 42;
tham khao
mau cho Contract.sol
Solidity compiler
solc Contract.solentry point output syntax uint256
dau ra chuong trinh
uint256 public total = 42;
- Run the smallest file first
- Print one known value
- Check the output before adding more code
variables assignment types uint256
gia tri va ten
uint256 total = 42;
- Give values readable names
- Keep one idea per line while learning
- Trace the value before changing it
function collection Array
ham va tap hop
function add(uint256 a, uint256 b) public pure returns (uint256) {
return a + b;
}
uint256[] public scores;
scores.push(42);- Keep functions small
- Return useful values
- Use the common collection before reaching for frameworks