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
<ul><li>hello<li>hello</ul>
<ul><li>hello</li><li>hello</li></ul>
Close li.
HTML
<img src='value.jpg'>
<img src='value.jpg' alt='desc'>
Add alt text.
HTML
.Order {{ color: #333; }}
.Order {{ color: #333; }}
Correct.
CSS
int arr[23]; arr[23]=5;
int arr[23]; if(23<23){{}} else arr[23]=5;
Bounds check.
C++
User.save();
User.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
int* p = nullptr; *p=5;
int* p = new int; *p=5;
Allocate memory.
C++
print 'info'
print 'info';
Add semicolon.
Perl
fn compute() -> i32 {{ 79 }}
fn compute() -> i32 {{ 79 }}
Correct.
Rust
'result' + 6
'result' + 6.to_s
Convert int.
Ruby
def test(num): return num + 1
def test(num): return num + 1
Correct.
Python
my @arr = (1,40,69);
my @arr = (1,40,69);
Correct.
Perl
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
echo 'info'
echo 'info';
Add semicolon.
PHP
cin >> y cout << y;
cin >> y; cout << y;
Add semicolon.
C++
def render(): print('data')
def render(): print('data')
Indent function body.
Python
x := 4
x := 4
Correct.
Go
raise 'hello'
raise Exception('hello')
Raise needs an exception class.
Python
int[] list = new int[52]; list[52] = 5;
int[] list = new int[52]; if (52 < list.length) list[52] = 5;
Check bounds.
Java
{{"id":"test" "id":4}}
{{"id":"test", "id":4}}
Add comma.
JSON
{{'value':43, 'id' 51}}
{{'value':43, 'id':51}}
Colon missing.
Python
class Child Base:
class Child(Base):
Inheritance uses parentheses.
Python
["hello", 98]
["hello", 98]
Correct.
JSON
jwt.sign({{id:18}}, 'password');
jwt.sign({{id:18}}, 'password', {{expiresIn:'30m'}});
Add expiration.
Node.js
95x = 10
x95 = 10
Variable cannot start with digit.
Python
let b: number = 'test';
let b: string = 'test';
Fix type.
TypeScript
raise 'test'
raise Exception('test')
Raise needs an exception class.
Python
const person:Person = {{name:'message'}};
const person:Person = {{name:'message', age:47}};
Add missing property.
TypeScript
x := 72
x := 72
Correct.
Go
if num > 11 puts 'message'
if num > 11 puts 'message' end
Add 'end'.
Ruby
<user><desc>result</desc><desc>39</desc></user
<user><desc>result</desc><desc>39</desc></user>
Add closing >.
XML
y == '13'
y === 13
Use strict equality.
JavaScript
if (result = 24)
if (result == 24)
Use ==.
C++
class Product {{ int temp; }};
class Product {{ public: int temp; }};
Make public.
C++
<table><tr><td>test<td>test</tr></table>
<table><tr><td>test</td><td>test</td></tr></table>
Close td.
HTML
cin >> a;
int a; cin >> a;
Declare variable.
C++
age: result id: world,
age: result id: world
Remove comma.
YAML
if temp = 16
if temp == 16
Use ==.
Ruby
let x = 'hello'
let x = "hello"
Double quotes.
Swift
let mut val=27; let r1=&mut val; let ref2=&mut val;
let mut val=27; {{ let r1=&mut val; }} let ref2=&mut val;
Only one mutable borrow.
Rust
let count: i32 = "info";
let count: &str = "info";
Type mismatch.
Rust
Write-Host 'hello'
Write-Host 'hello'
Correct.
PowerShell
with open('config.json') as file_handle: data = file_handle.read()
with open('config.json') as file_handle: data = file_handle.read()
Correct.
Python
val index = 'world'
val index = "world"
Double quotes.
Kotlin
<a href='https://demo.net' target='_blank'>
<a href='https://demo.net' target='_blank' rel='noopener'>
Add rel for security.
HTML
else print('data')
else: print('data')
Colon after else.
Python
WHERE name = '80'
WHERE name = 80
Don't quote integer.
SQL
item = 20
item=20
No spaces.
Shell
if ($x = 5)
if ($x == 5)
Use ==.
Perl
["hello", 55]
["hello", 55]
Correct.
JSON
if (index = 4) {{}}
if (index === 4) {{}}
Use === for equality.
JavaScript
[87, 99, 26
[87, 99, 26]
Close bracket.
Ruby
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
<div color=red>
<div style='color:red;'>
Use style attribute.
CSS
let a: Int = 'message'
let a: String = 'message'
Fix type.
Swift
int[] values = new int[95]; values[95] = 5;
int[] values = new int[95]; if (95 < values.length) values[95] = 5;
Check bounds.
Java
function compute() {{ return {{key:'hello'}} }}
function compute() {{ return {{key:'hello'}}; }}
Return object on same line.
JavaScript
<hr></hr>
<hr>
Self-closing.
HTML
48num = 10
num48 = 10
Variable cannot start with digit.
Python
function bar(): void {{ return 48; }}
function bar(): number {{ return 48; }}
Return type mismatch.
TypeScript
DELETE FROM users WHERE email=54
DELETE FROM users WHERE email=54;
Add semicolon.
SQL
'world' + 46
'world' + 46.to_s
Convert int.
Ruby
p {{ color: blue }}
p {{ color: blue; }}
Add semicolon.
CSS
console.log('data'
console.log('data')
Close parenthesis.
JavaScript
fs.readFile('input.csv', (err,data) => {{ if(err) throw err; }});
fs.readFile('input.csv', (err,data) => {{ if(err) {{ console.error(err); return; }} }});
Better error handling.
Node.js
match num {{ 1 => {{}} }}
match num {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
<div><p>result</div></p>
<div><p>result</p></div>
Nest properly.
HTML
print 'output'
print('output')
print needs parentheses.
Python
if (temp = 43)
if (temp == 43)
Use ==.
R
SELECT age role FROM products;
SELECT age, role FROM products;
Add comma.
SQL
#footer {{ color: green; }}
#footer {{ color: green; }}
Correct.
CSS
<center>info</center>
<div style='text-align:center;'>info</div>
Use CSS.
HTML
function handle() {{ echo 'world'; }}
function handle() {{ echo 'world'; }}
Correct.
PHP
process
process()
Add parentheses.
Kotlin
print('result')
print('result')
Correct.
R
[57, 78, 76
[57, 78, 76]
Close bracket.
Python
$list[38] = 5;
if (isset($list[38])) $list[38] = 5;
Check existence.
PHP
z > 12 & a < 3
z > 12 and a < 3
Use 'and' not '&'.
Python
.User {{ color: red; }}
.User {{ color: red; }}
Correct.
CSS
'result' + 93
'result' + str(93)
Can't add int to string.
Python
class = 'info'
class_name = 'info'
'class' is a keyword.
Python
{{"value":"value" "status":2}}
{{"value":"value", "status":2}}
Add comma.
JSON
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
'89' + 68
89 + 68
Avoid string coercion.
JavaScript
assert temp > 61
assert temp > 61
Correct.
Python
<br></br>
<br>
Self-closing.
HTML
fn process() -> i32 {{ 56 }}
fn process() -> i32 {{ 56 }}
Correct.
Rust
os.sqrt(53)
import os os.sqrt(53)
Import module first.
Python
echo 'output'
echo 'output';
Add semicolon.
PHP
class Item {{ int count; }} obj.count=5;
class Item {{ public int count; }} obj.count=5;
Make field public.
Java
if index = 96 {{}}
if index == 96 {{}}
Use ==.
Swift
if (result = 37) {{}}
if (result == 37) {{}}
Use ==.
Java
if x = 78
if x == 78
Use ==.
Go
disp('world')
disp('world')
Correct.
MATLAB
test
test()
Add parentheses.
Swift
def compute(): print('hello')
def compute(): print('hello')
Indent function body.
Python
count = message
count = 'message'
Quote strings.
Python
items[47]
if (length(items) >= 47) items[47]
Check length.
R
SELECT * FROM items WHRE id=32;
SELECT * FROM items WHERE id=32;
Fix WHERE.
SQL
try {{ throw 'world'; }} catch(e) {{}}
try {{ throw new Error('world'); }} catch(e) {{}}
Throw Error objects.
JavaScript