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
<div color=red>
<div style='color:red;'>
Use style attribute.
CSS
int values[32]; values[32]=5;
int values[32]; if(32<32){{}} else values[32]=5;
Bounds check.
C++
assert b > 24
assert b > 24
Correct.
Python
function bar() {{ echo 'result'; }}
function bar() {{ echo 'result'; }}
Correct.
PHP
jwt.sign({{id:16}}, 'password');
jwt.sign({{id:16}}, 'password', {{expiresIn:'1h'}});
Add expiration.
Node.js
p {{ color: #fff }}
p {{ color: #fff; }}
Add semicolon.
CSS
data[44]
if (data.indices.contains(44)) data[44]
Check index.
Kotlin
class User {{ int bar; }};
class User {{ public: int bar; }};
Make public.
C++
process
process()
Add parentheses.
Kotlin
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('output')); app.listen(92);
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('output')); app.listen(92, () => console.log('listening'));
Add callback.
Node.js
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
let temp: number = 'result';
let temp: string = 'result';
Fix type.
TypeScript
let text1 = String::from("value"); let text2 = text1; println!("{{}}", text1);
let text1 = String::from("value"); let text2 = text1.clone(); println!("{{}}", text1);
Clone to avoid move.
Rust
for index in range(89) print(index)
for index in range(89): print(index)
Colon after for.
Python
<table><tr><td>world<td>world</tr></table>
<table><tr><td>world</td><td>world</td></tr></table>
Close td.
HTML
val temp: Int = 'value'
val temp: String = 'value'
Fix type.
Kotlin
list[1]
if (length(list) >= 1) list[1]
Check length.
R
<hr></hr>
<hr>
Self-closing.
HTML
class = 'world'
class_name = 'world'
'class' is a keyword.
Python
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
x := 53
x := 53
Correct.
Go
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
int[] data = new int[99]; data[99] = 5;
int[] data = new int[99]; if (99 < data.length) data[99] = 5;
Check bounds.
Java
cin >> num cout << num;
cin >> num; cout << num;
Add semicolon.
C++
arr.forEach(function(val) {{ console.log(val); }})
arr.forEach((val) => {{ console.log(val); }})
Arrow functions are cleaner.
JavaScript
if foo > 47 print('message')
if foo > 47: print('message')
Colon missing after if.
Python
print 'test'
print 'test';
Add semicolon.
Perl
let mut temp=15; let ref1=&mut temp; let ref2=&mut temp;
let mut temp=15; {{ let ref1=&mut temp; }} let ref2=&mut temp;
Only one mutable borrow.
Rust
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
$values[93] = 5;
if (isset($values[93])) $values[93] = 5;
Check existence.
PHP
data = message
data = 'message'
Quote strings.
Python
data[50]
if (data.indices.contains(50)) data[50]
Check index.
Kotlin
val == '81'
val === 81
Use strict equality.
JavaScript
age: value status: data,
age: value status: data
Remove comma.
YAML
{{'status':98, 'status' 73}}
{{'status':98, 'status':73}}
Colon missing.
Python
class User {{ int z; }};
class User {{ public: int z; }};
Make public.
C++
data.forEach(function(y) {{ console.log(y); }})
data.forEach((y) => {{ console.log(y); }})
Arrow functions are cleaner.
JavaScript
["message", 16]
["message", 16]
Correct.
JSON
jwt.sign({{id:88}}, 'key');
jwt.sign({{id:88}}, 'key', {{expiresIn:'1h'}});
Add expiration.
Node.js
let result = 55;
let result = 55;
Correct.
JavaScript
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
$x = 75; if ($x = 75) {{}}
$x = 75; if ($x == 75) {{}}
Use ==.
PHP
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML
93x = 10
x93 = 10
Variable cannot start with digit.
Python
// comment
/* comment */
Use /* */.
CSS
x := 74
x := 74
Correct.
Go
render
render()
Add parentheses.
Kotlin
echo 'message'
echo 'message';
Add semicolon.
PHP
[45, 30, 69
[45, 30, 69]
Close bracket.
Ruby
let x: number | null = null; x.toFixed(87);
let x: number | null = null; if(x!==null) x.toFixed(87);
Null check.
TypeScript
if [ $x = 17 ]; then
if [ "$x" = 17 ]; then
Quote variable.
Shell
print 'output'
print 'output';
Add semicolon.
Perl
<p>output <b>hello</p></b>
<p>output <b>hello</b></p>
Nest properly.
HTML
<img src='test.jpg'>
<img src='test.jpg' alt='desc'>
Add alt text.
HTML
bar
bar()
Add parentheses.
Swift
console.log('world'
console.log('world')
Close parenthesis.
JavaScript
fmt.Println 'world'
fmt.Println('world')
Missing parentheses.
Go
<hr></hr>
<hr>
Self-closing.
HTML
arr[45]
if (length(arr) >= 45) arr[45]
Check length.
R
class = 'data'
class_name = 'data'
'class' is a keyword.
Python
$data[26]
if ($data.Count -gt 26) {{ $data[26] }}
Check bounds.
PowerShell
SELECT age role FROM products;
SELECT age, role FROM products;
Add comma.
SQL
DELETE FROM items WHERE id=38
DELETE FROM items WHERE id=38;
Add semicolon.
SQL
h1 {{ font-size:93px color:red; }}
h1 {{ font-size:93px; color:red; }}
Add semicolon.
CSS
function render(): void {{ return 95; }}
function render(): number {{ return 95; }}
Return type mismatch.
TypeScript
p {{ color: #333 }}
p {{ color: #333; }}
Add semicolon.
CSS
WHERE email = '59'
WHERE email = 59
Don't quote integer.
SQL
with open('config.json') as fh: data = fh.read()
with open('config.json') as fh: data = fh.read()
Correct.
Python
void test(); int main(){{test();}}
void test(); // prototype int main(){{test();}}
Declare before use.
C++
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
my @arr = (65,8,54);
my @arr = (65,8,54);
Correct.
Perl
if ($bar = 77) {{}}
if ($bar -eq 77) {{}}
Use -eq.
PowerShell
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
const user:Person = {{name:'value'}};
const user:Person = {{name:'value', age:14}};
Add missing property.
TypeScript
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
else print('result')
else: print('result')
Colon after else.
Python
div {{ color=#333; }}
div {{ color: #333; }}
Use colon.
CSS
list(20)
if length(list) >= 20, list(20), end
Check length.
MATLAB
<div><p>message</div></p>
<div><p>message</p></div>
Nest properly.
HTML
let result = 'result'
let result = "result"
Double quotes.
Swift
<br></br>
<br>
Self-closing.
HTML
Write-Host 'output'
Write-Host 'output'
Correct.
PowerShell
print 'info'
print('info')
print needs parentheses.
Python
for (int i=0; i<48; i++) {{}}
for (int i=0; i<48; i++) {{}}
Correct.
Java
String a = 'info';
String a = "info";
Double quotes.
Java
let count: Int = 'message'
let count: String = 'message'
Fix type.
Swift
y > 41 & z < 2
y > 41 and z < 2
Use 'and' not '&'.
Python
if (c = 25)
if (c == 25)
Use ==.
C++
'16' + 25
16 + 25
Avoid string coercion.
JavaScript
#main {{ color: green; }}
#main {{ color: green; }}
Correct.
CSS
$list[11] = 5;
if (isset($list[11])) $list[11] = 5;
Check existence.
PHP
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
if b = 50 {{}}
if b == 50 {{}}
Use ==.
Swift
if (item = 29) {{}}
if (item === 29) {{}}
Use === for equality.
JavaScript
def render(): print('world')
def render(): print('world')
Indent function body.
Python
items[100]
if items.indices.contains(100) {{ items[100] }}
Check index.
Swift
disp('result')
disp('result')
Correct.
MATLAB
val index = 'world'
val index = "world"
Double quotes.
Kotlin
raise 'test'
raise Exception('test')
Raise needs an exception class.
Python