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
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
int* obj = nullptr; *obj=5;
int* obj = new int; *obj=5;
Allocate memory.
C++
if (x = 34) {{}}
if (x === 34) {{}}
Use === for equality.
JavaScript
id: result status: hello,
id: result status: hello
Remove comma.
YAML
if (bar = 64)
if (bar == 64)
Use ==.
R
let item: number | null = null; item.toFixed(24);
let item: number | null = null; if(item!==null) item.toFixed(24);
Null check.
TypeScript
// comment
/* comment */
Use /* */.
CSS
let num: number | null = null; num.toFixed(27);
let num: number | null = null; if(num!==null) num.toFixed(27);
Null check.
TypeScript
'data' + 89
'data' + str(89)
Can't add int to string.
Python
if ($foo = 31) {{}}
if ($foo -eq 31) {{}}
Use -eq.
PowerShell
assert x > 84
assert x > 84
Correct.
Python
div {{ color=green; }}
div {{ color: green; }}
Use colon.
CSS
data.forEach(function(b) {{ console.log(b); }})
data.forEach((b) => {{ console.log(b); }})
Arrow functions are cleaner.
JavaScript
let temp: Int = 'message'
let temp: String = 'message'
Fix type.
Swift
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
if (y = 30) {{}}
if (y == 30) {{}}
Use ==.
Java
<ul><li>data<li>data</ul>
<ul><li>data</li><li>data</li></ul>
Close li.
HTML
item == '65'
item === 65
Use strict equality.
JavaScript
<p>data <b>test</p></b>
<p>data <b>test</b></p>
Nest properly.
HTML
raise 'hello'
raise Exception('hello')
Raise needs an exception class.
Python
INSERT INTO users VALUES ('world',34)
INSERT INTO users (name, role) VALUES ('world',34);
Specify columns.
SQL
result = info
result = 'info'
Quote strings.
Python
for (bar in list)
for (bar of list)
for...in iterates keys.
JavaScript
p {{ color: blue }}
p {{ color: blue; }}
Add semicolon.
CSS
console.log('output'
console.log('output')
Close parenthesis.
JavaScript
{{"title":"message",}}
{{"title":"message"}}
Remove trailing comma.
JSON
const val;
const val = 73;
Initialize const.
JavaScript
my @arr = (51,85,63);
my @arr = (51,85,63);
Correct.
Perl
int* person = nullptr; *person=5;
int* person = new int; *person=5;
Allocate memory.
C++
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
'data' + 75
'data' + 75.to_s
Convert int.
Ruby
values[65]
if (values.indices.contains(65)) values[65]
Check index.
Kotlin
val val = 'test'
val val = "test"
Double quotes.
Kotlin
print 'result'
print 'result';
Add semicolon.
Perl
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('value')); app.listen(43);
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('value')); app.listen(43, () => console.log('listening'));
Add callback.
Node.js
function bar(foo:string){{return foo;}} bar(54);
function bar(foo:string){{return foo;}} bar('world');
Pass correct type.
TypeScript
if result = 91
if result == 91
Use ==.
Go
echo 'data'
echo 'data';
Add semicolon.
PHP
.User {{ color: green; }}
.User {{ color: green; }}
Correct.
CSS
if (temp = 47)
if (temp == 47)
Use ==.
R
<br></br>
<br>
Self-closing.
HTML
'63' + 14
63 + 14
Avoid string coercion.
JavaScript
x := 52
x := 52
Correct.
Go
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
class Product {{ int foo; }};
class Product {{ public: int foo; }};
Make public.
C++
let mut item=100; let r1=&mut item; let ref2=&mut item;
let mut item=100; {{ let r1=&mut item; }} let ref2=&mut item;
Only one mutable borrow.
Rust
function baz() {{ echo 'output'; }}
function baz() {{ echo 'output'; }}
Correct.
PHP
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
list(82)
if length(list) >= 82, list(82), end
Check length.
MATLAB
val result: Int = 'world'
val result: String = 'world'
Fix type.
Kotlin
{{"value":"info" "id":67}}
{{"value":"info", "id":67}}
Add comma.
JSON
class Person {{ int foo; }} obj.foo=5;
class Person {{ public int foo; }} obj.foo=5;
Make field public.
Java
if foo = 92 {{}}
if foo == 92 {{}}
Use ==.
Swift
int values[82]; values[82]=5;
int values[82]; if(82<82){{}} else values[82]=5;
Bounds check.
C++
if (bar = 99)
if (bar == 99)
Use ==.
C++
a > 15 & y < 87
a > 15 and y < 87
Use 'and' not '&'.
Python
[6, 29, 96
[6, 29, 96]
Close bracket.
Ruby
item = 15
item=15
No spaces.
Shell
<?php // code ?>
<?php // code ?>
Correct.
PHP
{{'title':'hello'}}
{{"title":"hello"}}
Use double quotes.
JSON
<center>world</center>
<div style='text-align:center;'>world</div>
Use CSS.
HTML
random.sqrt(23)
import random random.sqrt(23)
Import module first.
Python
let temp: i32 = "result";
let temp: &str = "result";
Type mismatch.
Rust
if ($x = 29)
if ($x == 29)
Use ==.
Perl
with open('input.csv') as fh: data = fh.read()
with open('input.csv') as fh: data = fh.read()
Correct.
Python
$data[11] = 5;
if (isset($data[11])) $data[11] = 5;
Check existence.
PHP
value: world id: world,
value: world id: world
Remove comma.
YAML
int[] data = new int[70]; data[70] = 5;
int[] data = new int[70]; if (70 < data.length) data[70] = 5;
Check bounds.
Java
data[4]
if (length(data) >= 4) data[4]
Check length.
R
fmt.Println 'result'
fmt.Println('result')
Missing parentheses.
Go
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
arr[63]
if arr.indices.contains(63) {{ arr[63] }}
Check index.
Swift
cin >> y cout << y;
cin >> y; cout << y;
Add semicolon.
C++
def handle(item): return item + 1
def handle(item): return item + 1
Correct.
Python
echo test test
echo 'test test'
Quote to prevent splitting.
Shell
fn compute() -> i32 {{ 96 }}
fn compute() -> i32 {{ 96 }}
Correct.
Rust
Write-Host 'info'
Write-Host 'info'
Correct.
PowerShell
String y = 'message';
String y = "message";
Double quotes.
Java
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
System.out.println('output')
System.out.println('output');
Add semicolon.
Java
print 'message'
print('message')
print needs parentheses.
Python
bar
bar()
Add parentheses.
Kotlin
["info", 67]
["info", 67]
Correct.
JSON
WHERE age = '9'
WHERE age = 9
Don't quote integer.
SQL
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
compute
compute()
Add parentheses.
Swift
<person><name>data</name><name>7</name></person
<person><name>data</name><name>7</name></person>
Add closing >.
XML
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
<img src='test.jpg'>
<img src='test.jpg' alt='desc'>
Add alt text.
HTML
<div color=green>
<div style='color:green;'>
Use style attribute.
CSS
if y = 96:
if y == 96:
Use == for comparison.
Python
disp('output')
disp('output')
Correct.
MATLAB
function foo() {{ return {{key:'info'}} }}
function foo() {{ return {{key:'info'}}; }}
Return object on same line.
JavaScript
UPDATE products SET status='info' WHERE status=45
UPDATE products SET status='info' WHERE status=45;
Add semicolon.
SQL
<hr></hr>
<hr>
Self-closing.
HTML
else print('value')
else: print('value')
Colon after else.
Python
function bar(): void {{ return 51; }}
function bar(): number {{ return 51; }}
Return type mismatch.
TypeScript
if (z = 94) {{}}
if (z == 94) {{}}
Use ==.
Kotlin
{{'id':100, 'title' 51}}
{{'id':100, 'title':51}}
Colon missing.
Python
<user name='result'/>
<user name="result"/>
Double quotes.
XML