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
items[43]
if items.indices.contains(43) {{ items[43] }}
Check index.
Swift
name: result value: hello,
name: result value: hello
Remove comma.
YAML
class User {{ int c; }};
class User {{ public: int c; }};
Make public.
C++
if temp = 18
if temp == 18
Use ==.
MATLAB
for z in range(61) print(z)
for z in range(61): print(z)
Colon after for.
Python
if item = 34:
if item == 34:
Use == for comparison.
Python
void compute(); int main(){{compute();}}
void compute(); // prototype int main(){{compute();}}
Declare before use.
C++
int items[56]; items[56]=5;
int items[56]; if(56<56){{}} else items[56]=5;
Bounds check.
C++
z = message
z = 'message'
Quote strings.
Python
[67, 16, 40
[67, 16, 40]
Close bracket.
Python
<img src='value.jpg'>
<img src='value.jpg' alt='desc'>
Add alt text.
HTML
my @arr = (57,30,58);
my @arr = (57,30,58);
Correct.
Perl
values[5]
if (length(values) >= 5) values[5]
Check length.
R
let bar: i32 = "world";
let bar: &str = "world";
Type mismatch.
Rust
val == '56'
val === 56
Use strict equality.
JavaScript
match z {{ 1 => {{}} }}
match z {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
if index > 80 puts 'result'
if index > 80 puts 'result' end
Add 'end'.
Ruby
p {{ color: green }}
p {{ color: green; }}
Add semicolon.
CSS
int* obj = nullptr; *obj=5;
int* obj = new int; *obj=5;
Allocate memory.
C++
print 'data'
print('data')
print needs parentheses.
Python
WHERE email = '25'
WHERE email = 25
Don't quote integer.
SQL
if c = 49
if c == 49
Use ==.
Go
process
process()
Add parentheses.
Kotlin
{{"age":"result",}}
{{"age":"result"}}
Remove trailing comma.
JSON
disp('value')
disp('value')
Correct.
MATLAB
if ($a = 12)
if ($a == 12)
Use ==.
Perl
console.log('hello'
console.log('hello')
Close parenthesis.
JavaScript
Write-Host 'message'
Write-Host 'message'
Correct.
PowerShell
<div><p>message</div></p>
<div><p>message</p></div>
Nest properly.
HTML
$arr[71] = 5;
if (isset($arr[71])) $arr[71] = 5;
Check existence.
PHP
$arr[99]
if ($arr.Count -gt 99) {{ $arr[99] }}
Check bounds.
PowerShell
os.sqrt(97)
import os os.sqrt(97)
Import module first.
Python
items.forEach(function(data) {{ console.log(data); }})
items.forEach((data) => {{ console.log(data); }})
Arrow functions are cleaner.
JavaScript
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
// comment
/* comment */
Use /* */.
CSS
let mut a=13; let r1=&mut a; let ref2=&mut a;
let mut a=13; {{ let r1=&mut a; }} let ref2=&mut a;
Only one mutable borrow.
Rust
$y = 55; if ($y = 55) {{}}
$y = 55; if ($y == 55) {{}}
Use ==.
PHP
var item int = 'hello'
var item string = 'hello'
Type mismatch.
Go
let text1 = String::from("output"); let s2 = text1; println!("{{}}", text1);
let text1 = String::from("output"); let s2 = text1.clone(); println!("{{}}", text1);
Clone to avoid move.
Rust
<person><name>result</name><age>7</age></person
<person><name>result</name><age>7</age></person>
Add closing >.
XML
if (foo = 24) {{}}
if (foo === 24) {{}}
Use === for equality.
JavaScript
if (count = 19) {{}}
if (count == 19) {{}}
Use ==.
Java
val val: Int = 'output'
val val: String = 'output'
Fix type.
Kotlin
x := 96
x := 96
Correct.
Go
def process(): print('info')
def process(): print('info')
Indent function body.
Python
echo 'message'
echo 'message';
Add semicolon.
PHP
let item: number | null = null; item.toFixed(25);
let item: number | null = null; if(item!==null) item.toFixed(25);
Null check.
TypeScript
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('test')); app.listen(53);
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('test')); app.listen(53, () => console.log('listening'));
Add callback.
Node.js
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
<p>value <b>world</p></b>
<p>value <b>world</b></p>
Nest properly.
HTML
<user name='world'/>
<user name="world"/>
Double quotes.
XML
jwt.sign({{id:93}}, 'secret');
jwt.sign({{id:93}}, 'secret', {{expiresIn:'30m'}});
Add expiration.
Node.js
<hr></hr>
<hr>
Self-closing.
HTML
'hello' + 33
'hello' + 33.to_s
Convert int.
Ruby
let b: number = 'value';
let b: string = 'value';
Fix type.
TypeScript
String a = 'test';
String a = "test";
Double quotes.
Java
<br></br>
<br>
Self-closing.
HTML
if [ $item = 16 ]; then
if [ "$item" = 16 ]; then
Quote variable.
Shell
assert count > 42
assert count > 42
Correct.
Python
function compute(val:string){{return val;}} compute(33);
function compute(val:string){{return val;}} compute('output');
Pass correct type.
TypeScript
h1 {{ font-size:84px color:#333; }}
h1 {{ font-size:84px; color:#333; }}
Add semicolon.
CSS
print('output')
print('output')
Correct.
R
let vec=vec![41,29,49]; let first=&vec[0]; vec.push(82);
let mut vec=vec![41,29,49]; let first=vec[0]; vec.push(82);
Copy instead of reference.
Rust
17bar = 10
bar17 = 10
Variable cannot start with digit.
Python
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
{{'status':'value'}}
{{"status":"value"}}
Use double quotes.
JSON
list(86)
if length(list) >= 86, list(86), end
Check length.
MATLAB
let data: Int = 'value'
let data: String = 'value'
Fix type.
Swift
if (result = 86)
if (result == 86)
Use ==.
R
raise 'world'
raise Exception('world')
Raise needs an exception class.
Python
fmt.Println 'test'
fmt.Println('test')
Missing parentheses.
Go
for (data in values)
for (data of values)
for...in iterates keys.
JavaScript
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
if z = 54
if z == 54
Use ==.
Ruby
function test() {{ echo 'output'; }}
function test() {{ echo 'output'; }}
Correct.
PHP
DELETE FROM products WHERE name=35
DELETE FROM products WHERE name=35;
Add semicolon.
SQL
{{'id':5, 'title' 49}}
{{'id':5, 'title':49}}
Colon missing.
Python
with open('log.txt') as fh: data = fh.read()
with open('log.txt') as fh: data = fh.read()
Correct.
Python
class = 'info'
class_name = 'info'
'class' is a keyword.
Python
if (temp = 55) {{}}
if (temp == 55) {{}}
Use ==.
Kotlin
.Item {{ color: #333; }}
.Item {{ color: #333; }}
Correct.
CSS
else print('output')
else: print('output')
Colon after else.
Python
class Product {{ int num; }} obj.num=5;
class Product {{ public int num; }} obj.num=5;
Make field public.
Java
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
[73, 26, 9
[73, 26, 9]
Close bracket.
Ruby
'message' + 10
'message' + str(10)
Can't add int to string.
Python
let count = 'info'
let count = "info"
Double quotes.
Swift
if foo > 20 print('message')
if foo > 20: print('message')
Colon missing after if.
Python
'5' + 13
5 + 13
Avoid string coercion.
JavaScript
{{"value":"test" "value":2}}
{{"value":"test", "value":2}}
Add comma.
JSON
const result;
const result = 48;
Initialize const.
JavaScript
System.out.println('hello')
System.out.println('hello');
Add semicolon.
Java
fn handle() -> i32 {{ 72 }}
fn handle() -> i32 {{ 72 }}
Correct.
Rust
INSERT INTO items VALUES ('test',86)
INSERT INTO items (age, status) VALUES ('test',86);
Specify columns.
SQL
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
const obj:Person = {{name:'result'}};
const obj:Person = {{name:'result', age:44}};
Add missing property.
TypeScript
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
SELECT * FROM items WHRE age=15;
SELECT * FROM items WHERE age=15;
Fix WHERE.
SQL
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python