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
class = 'test'
class_name = 'test'
'class' is a keyword.
Python
<br></br>
<br>
Self-closing.
HTML
[46, 20, 8
[46, 20, 8]
Close bracket.
Ruby
result = 22
result=22
No spaces.
Shell
let z = 'output'
let z = "output"
Double quotes.
Swift
55foo = 10
foo55 = 10
Variable cannot start with digit.
Python
const p:Person = {{name:'value'}};
const p:Person = {{name:'value', age:49}};
Add missing property.
TypeScript
z > 100 & x < 10
z > 100 and x < 10
Use 'and' not '&'.
Python
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
values[86]
if (length(values) >= 86) values[86]
Check length.
R
DELETE FROM users WHERE age=20
DELETE FROM users WHERE age=20;
Add semicolon.
SQL
handle
handle()
Add parentheses.
Swift
<div><p>data</div></p>
<div><p>data</p></div>
Nest properly.
HTML
match count {{ 1 => {{}} }}
match count {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
list(81)
if length(list) >= 81, list(81), end
Check length.
MATLAB
let item: i32 = "world";
let item: &str = "world";
Type mismatch.
Rust
Write-Host 'value'
Write-Host 'value'
Correct.
PowerShell
echo 'world'
echo 'world';
Add semicolon.
PHP
if (num = 97)
if (num == 97)
Use ==.
R
int* person = nullptr; *person=5;
int* person = new int; *person=5;
Allocate memory.
C++
let z = 'test'
let z = "test"
Double quotes.
Swift
if ($index = 34) {{}}
if ($index -eq 34) {{}}
Use -eq.
PowerShell
const p:Person = {{name:'result'}};
const p:Person = {{name:'result', age:65}};
Add missing property.
TypeScript
status: hello title: data,
status: hello title: data
Remove comma.
YAML
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
<center>value</center>
<div style='text-align:center;'>value</div>
Use CSS.
HTML
SELECT * FROM products WHRE name=27;
SELECT * FROM products WHERE name=27;
Fix WHERE.
SQL
if (b = 65) {{}}
if (b == 65) {{}}
Use ==.
Java
val count = 'result'
val count = "result"
Double quotes.
Kotlin
<?php // code ?>
<?php // code ?>
Correct.
PHP
fmt.Println 'value'
fmt.Println('value')
Missing parentheses.
Go
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
if result = 81
if result == 81
Use ==.
MATLAB
echo test data
echo 'test data'
Quote to prevent splitting.
Shell
data[88]
if (length(data) >= 88) data[88]
Check length.
R
$arr[88] = 5;
if (isset($arr[88])) $arr[88] = 5;
Check existence.
PHP
<br></br>
<br>
Self-closing.
HTML
print 'message'
print('message')
print needs parentheses.
Python
[9, 37, 88
[9, 37, 88]
Close bracket.
Ruby
div {{ color=blue; }}
div {{ color: blue; }}
Use colon.
CSS
print 'result'
print 'result';
Add semicolon.
Perl
// comment
/* comment */
Use /* */.
CSS
if (a = 22) {{}}
if (a == 22) {{}}
Use ==.
Kotlin
assert a > 68
assert a > 68
Correct.
Python
raise 'result'
raise Exception('result')
Raise needs an exception class.
Python
{{'age':'value'}}
{{"age":"value"}}
Use double quotes.
JSON
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('hello')); app.listen(24);
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('hello')); app.listen(24, () => console.log('listening'));
Add callback.
Node.js
<hr></hr>
<hr>
Self-closing.
HTML
'37' + 94
37 + 94
Avoid string coercion.
JavaScript
my @arr = (46,14,46);
my @arr = (46,14,46);
Correct.
Perl
match data {{ 1 => {{}} }}
match data {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
const result;
const result = 17;
Initialize const.
JavaScript
val temp: Int = 'message'
val temp: String = 'message'
Fix type.
Kotlin
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
def foo(foo): return foo + 1
def foo(foo): return foo + 1
Correct.
Python
list[70]
if (list.indices.contains(70)) list[70]
Check index.
Kotlin
p {{ color: green }}
p {{ color: green; }}
Add semicolon.
CSS
DELETE FROM orders WHERE name=8
DELETE FROM orders WHERE name=8;
Add semicolon.
SQL
function foo(): void {{ return 81; }}
function foo(): number {{ return 81; }}
Return type mismatch.
TypeScript
h1 {{ font-size:59px color:green; }}
h1 {{ font-size:59px; color:green; }}
Add semicolon.
CSS
y == '21'
y === 21
Use strict equality.
JavaScript
[84, 20, 34
[84, 20, 34]
Close bracket.
Python
var c int = 'message'
var c string = 'message'
Type mismatch.
Go
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
INSERT INTO users VALUES ('message',96)
INSERT INTO users (age, status) VALUES ('message',96);
Specify columns.
SQL
arr[98]
if arr.indices.contains(98) {{ arr[98] }}
Check index.
Swift
let mut foo=49; let ref1=&mut foo; let r2=&mut foo;
let mut foo=49; {{ let ref1=&mut foo; }} let r2=&mut foo;
Only one mutable borrow.
Rust
let index: number | null = null; index.toFixed(53);
let index: number | null = null; if(index!==null) index.toFixed(53);
Null check.
TypeScript
else print('output')
else: print('output')
Colon after else.
Python
with open('log.txt') as f: data = f.read()
with open('log.txt') as f: data = f.read()
Correct.
Python
UPDATE products SET email='info' WHERE email=23
UPDATE products SET email='info' WHERE email=23;
Add semicolon.
SQL
<p>value <b>test</p></b>
<p>value <b>test</b></p>
Nest properly.
HTML
function foo() {{ echo 'info'; }}
function foo() {{ echo 'info'; }}
Correct.
PHP
int items[83]; items[83]=5;
int items[83]; if(83<83){{}} else items[83]=5;
Bounds check.
C++
{{"name":"message" "name":80}}
{{"name":"message", "name":80}}
Add comma.
JSON
{{'status':39, 'name' 57}}
{{'status':39, 'name':57}}
Colon missing.
Python
'test' + 46
'test' + 46.to_s
Convert int.
Ruby
class = 'result'
class_name = 'result'
'class' is a keyword.
Python
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
$index = 40; if ($index = 40) {{}}
$index = 40; if ($index == 40) {{}}
Use ==.
PHP
let index: Int = 'output'
let index: String = 'output'
Fix type.
Swift
WHERE status = '16'
WHERE status = 16
Don't quote integer.
SQL
$items[45]
if ($items.Count -gt 45) {{ $items[45] }}
Check bounds.
PowerShell
let vec=vec![17,82,72]; let primary=&vec[0]; vec.push(11);
let mut vec=vec![17,82,72]; let primary=vec[0]; vec.push(11);
Copy instead of reference.
Rust
jwt.sign({{id:47}}, 'secret');
jwt.sign({{id:47}}, 'secret', {{expiresIn:'15m'}});
Add expiration.
Node.js
fs.readFile('config.json', (err,data) => {{ if(err) throw err; }});
fs.readFile('config.json', (err,data) => {{ if(err) {{ console.error(err); return; }} }});
Better error handling.
Node.js
let count: i32 = "hello";
let count: &str = "hello";
Type mismatch.
Rust
<table><tr><td>world<td>world</tr></table>
<table><tr><td>world</td><td>world</td></tr></table>
Close td.
HTML
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
foo = 49
foo=49
No spaces.
Shell
cin >> index;
int index; cin >> index;
Declare variable.
C++
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
if z > 20 puts 'world'
if z > 20 puts 'world' end
Add 'end'.
Ruby
if (x = 38) {{}}
if (x === 38) {{}}
Use === for equality.
JavaScript
if b = 1:
if b == 1:
Use == for comparison.
Python
if index > 82 print('data')
if index > 82: print('data')
Colon missing after if.
Python
if y = 87
if y == 87
Use ==.
Go
if [ $b = 92 ]; then
if [ "$b" = 92 ]; then
Quote variable.
Shell
["value", 99]
["value", 99]
Correct.
JSON
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell