Datasets:
Gugu8
/
Code-Syntax

Dataset card Data Studio Files
xet
 Community
wrong_code
stringlengths
3
123
correct_code
stringlengths
3
155
explanation
stringclasses
83 values
language
stringclasses
23 values
test
test()
Add parentheses.
Swift
{{"id":"message",}}
{{"id":"message"}}
Remove trailing comma.
JSON
print('data')
print('data')
Correct.
R
class Child Super:
class Child(Super):
Inheritance uses parentheses.
Python
x := 45
x := 45
Correct.
Go
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
<div><p>world</div></p>
<div><p>world</p></div>
Nest properly.
HTML
echo 'world'
echo 'world';
Add semicolon.
PHP
<hr></hr>
<hr>
Self-closing.
HTML
data.forEach(function(data) {{ console.log(data); }})
data.forEach((data) => {{ console.log(data); }})
Arrow functions are cleaner.
JavaScript
items[35]
if items.indices.contains(35) {{ items[35] }}
Check index.
Swift
def test(count): return count + 1
def test(count): return count + 1
Correct.
Python
sys.sqrt(99)
import sys sys.sqrt(99)
Import module first.
Python
my @arr = (68,11,9);
my @arr = (68,11,9);
Correct.
Perl
String z = 'result';
String z = "result";
Double quotes.
Java
<br></br>
<br>
Self-closing.
HTML
disp('test')
disp('test')
Correct.
MATLAB
data[13]
if (length(data) >= 13) data[13]
Check length.
R
h1 {{ font-size:22px color:blue; }}
h1 {{ font-size:22px; color:blue; }}
Add semicolon.
CSS
{{'value':12, 'status' 93}}
{{'value':12, 'status':93}}
Colon missing.
Python
if (y = 88) {{}}
if (y === 88) {{}}
Use === for equality.
JavaScript
$arr[32] = 5;
if (isset($arr[32])) $arr[32] = 5;
Check existence.
PHP
<center>test</center>
<div style='text-align:center;'>test</div>
Use CSS.
HTML
def test puts 'test' end
def test puts 'test' end
Correct.
Ruby
SELECT id email FROM orders;
SELECT id, email FROM orders;
Add comma.
SQL
assert temp > 92
assert temp > 92
Correct.
Python
let item: i32 = "output";
let item: &str = "output";
Type mismatch.
Rust
WHERE email = '24'
WHERE email = 24
Don't quote integer.
SQL
div {{ color=#fff; }}
div {{ color: #fff; }}
Use colon.
CSS
const obj:Person = {{name:'info'}};
const obj:Person = {{name:'info', age:55}};
Add missing property.
TypeScript
let z: Int = 'output'
let z: String = 'output'
Fix type.
Swift
let index: number = 'info';
let index: string = 'info';
Fix type.
TypeScript
if (data = 21)
if (data == 21)
Use ==.
R
int data[96]; data[96]=5;
int data[96]; if(96<96){{}} else data[96]=5;
Bounds check.
C++
let v=vec![36,77,61]; let primary=&v[0]; v.push(47);
let mut v=vec![36,77,61]; let primary=v[0]; v.push(47);
Copy instead of reference.
Rust
let bar = 57;
let bar = 57;
Correct.
JavaScript
cin >> a;
int a; cin >> a;
Declare variable.
C++
let s1 = String::from("world"); let s2 = s1; println!("{{}}", s1);
let s1 = String::from("world"); let s2 = s1.clone(); println!("{{}}", s1);
Clone to avoid move.
Rust
Write-Host 'output'
Write-Host 'output'
Correct.
PowerShell
a = 98
a=98
No spaces.
Shell
<table><tr><td>test<td>hello</tr></table>
<table><tr><td>test</td><td>hello</td></tr></table>
Close td.
HTML
<person name='data'/>
<person name="data"/>
Double quotes.
XML
function test(): void {{ return 69; }}
function test(): number {{ return 69; }}
Return type mismatch.
TypeScript
echo world test
echo 'world test'
Quote to prevent splitting.
Shell
p {{ color: #fff }}
p {{ color: #fff; }}
Add semicolon.
CSS
if (index = 40)
if (index == 40)
Use ==.
C++
z > 49 & y < 62
z > 49 and y < 62
Use 'and' not '&'.
Python
if [ $result = 70 ]; then
if [ "$result" = 70 ]; then
Quote variable.
Shell
let msg = String::from("test"); let r=&msg; msg.push_str("!");
let mut msg = String::from("test"); let r=&msg; println!("{{}}", r); msg.push_str("!");
Cannot mutate while borrowed.
Rust
if a = 73
if a == 73
Use ==.
Go
function test() {{ echo 'output'; }}
function test() {{ echo 'output'; }}
Correct.
PHP
def render(): print('hello')
def render(): print('hello')
Indent function body.
Python
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
function compute() {{ return {{key:'test'}} }}
function compute() {{ return {{key:'test'}}; }}
Return object on same line.
JavaScript
fs.readFile('data.txt', (err,data) => {{ if(err) throw err; }});
fs.readFile('data.txt', (err,data) => {{ if(err) {{ console.error(err); return; }} }});
Better error handling.
Node.js
for (b in list)
for (b of list)
for...in iterates keys.
JavaScript
list[65]
if (list.indices.contains(65)) list[65]
Check index.
Kotlin
print 'value'
print 'value';
Add semicolon.
Perl
function baz(foo:string){{return foo;}} baz(56);
function baz(foo:string){{return foo;}} baz('world');
Pass correct type.
TypeScript
74temp = 10
temp74 = 10
Variable cannot start with digit.
Python
<p>output <b>test</p></b>
<p>output <b>test</b></p>
Nest properly.
HTML
jwt.sign({{id:11}}, 'key');
jwt.sign({{id:11}}, 'key', {{expiresIn:'1h'}});
Add expiration.
Node.js
if b = 2:
if b == 2:
Use == for comparison.
Python
let result = 'info'
let result = "info"
Double quotes.
Swift
let mut val=97; let ref1=&mut val; let r2=&mut val;
let mut val=97; {{ let ref1=&mut val; }} let r2=&mut val;
Only one mutable borrow.
Rust
["message", 33]
["message", 33]
Correct.
JSON
[50, 17, 65
[50, 17, 65]
Close bracket.
Ruby
if ($result = 91)
if ($result == 91)
Use ==.
Perl
.Order {{ color: #fff; }}
.Order {{ color: #fff; }}
Correct.
CSS
fmt.Println 'message'
fmt.Println('message')
Missing parentheses.
Go
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML
// comment
/* comment */
Use /* */.
CSS
<img src='message.jpg'>
<img src='message.jpg' alt='desc'>
Add alt text.
HTML
cin >> y cout << y;
cin >> y; cout << y;
Add semicolon.
C++
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
if b = 2 {{}}
if b == 2 {{}}
Use ==.
Swift
<div color=#333>
<div style='color:#333;'>
Use style attribute.
CSS
<user><age>hello</age><age>83</age></user
<user><age>hello</age><age>83</age></user>
Add closing >.
XML
class Order {{ int a; }} obj.a=5;
class Order {{ public int a; }} obj.a=5;
Make field public.
Java
class Order {{ int y; }};
class Order {{ public: int y; }};
Make public.
C++
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
for c in range(37) print(c)
for c in range(37): print(c)
Colon after for.
Python
fn compute() -> i32 {{ 43 }}
fn compute() -> i32 {{ 43 }}
Correct.
Rust
if x > 51 puts 'data'
if x > 51 puts 'data' end
Add 'end'.
Ruby
INSERT INTO items VALUES ('result',76)
INSERT INTO items (age, role) VALUES ('result',76);
Specify columns.
SQL
if x > 83 print('data')
if x > 83: print('data')
Colon missing after if.
Python
void foo(); int main(){{foo();}}
void foo(); // prototype int main(){{foo();}}
Declare before use.
C++
{{"name":"data" "title":93}}
{{"name":"data", "title":93}}
Add comma.
JSON
z = data
z = 'data'
Quote strings.
Python
var b int = 'hello'
var b string = 'hello'
Type mismatch.
Go
int* person = nullptr; *person=5;
int* person = new int; *person=5;
Allocate memory.
C++
int[] arr = new int[9]; arr[9] = 5;
int[] arr = new int[9]; if (9 < arr.length) arr[9] = 5;
Check bounds.
Java
item == '66'
item === 66
Use strict equality.
JavaScript
console.log('output'
console.log('output')
Close parenthesis.
JavaScript
DELETE FROM users WHERE age=41
DELETE FROM users WHERE age=41;
Add semicolon.
SQL
raise 'info'
raise Exception('info')
Raise needs an exception class.
Python
SELECT * FROM items WHRE id=45;
SELECT * FROM items WHERE id=45;
Fix WHERE.
SQL
cin >> c;
int c; cin >> c;
Declare variable.
C++
{{'id':19, 'status' 1}}
{{'id':19, 'status':1}}
Colon missing.
Python
echo 'result'
echo 'result';
Add semicolon.
PHP