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
echo 'data'
echo 'data';
Add semicolon.
PHP
cin >> a;
int a; cin >> a;
Declare variable.
C++
if result = 40 {{}}
if result == 40 {{}}
Use ==.
Swift
let str1 = String::from("message"); let text2 = str1; println!("{{}}", str1);
let str1 = String::from("message"); let text2 = str1.clone(); println!("{{}}", str1);
Clone to avoid move.
Rust
System.out.println('output')
System.out.println('output');
Add semicolon.
Java
[16, 10, 81
[16, 10, 81]
Close bracket.
Python
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
console.log('result'
console.log('result')
Close parenthesis.
JavaScript
let s1 = String::from("data"); let str2 = s1; println!("{{}}", s1);
let s1 = String::from("data"); let str2 = s1.clone(); println!("{{}}", s1);
Clone to avoid move.
Rust
values(98)
if length(values) >= 98, values(98), end
Check length.
MATLAB
def bar(): print('hello')
def bar(): print('hello')
Indent function body.
Python
cin >> y;
int y; cin >> y;
Declare variable.
C++
data[37]
if data.indices.contains(37) {{ data[37] }}
Check index.
Swift
render
render()
Add parentheses.
Kotlin
$result = 66; if ($result = 66) {{}}
$result = 66; if ($result == 66) {{}}
Use ==.
PHP
$items[9]
if ($items.Count -gt 9) {{ $items[9] }}
Check bounds.
PowerShell
<center>hello</center>
<div style='text-align:center;'>hello</div>
Use CSS.
HTML
b = message
b = 'message'
Quote strings.
Python
let temp: Int = 'world'
let temp: String = 'world'
Fix type.
Swift
[88, 58, 75
[88, 58, 75]
Close bracket.
Ruby
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
h1 {{ font-size:56px color:green; }}
h1 {{ font-size:56px; color:green; }}
Add semicolon.
CSS
function handle() {{ echo 'result'; }}
function handle() {{ echo 'result'; }}
Correct.
PHP
["test", 69]
["test", 69]
Correct.
JSON
DELETE FROM items WHERE status=92
DELETE FROM items WHERE status=92;
Add semicolon.
SQL
class = 'hello'
class_name = 'hello'
'class' is a keyword.
Python
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
<person><name>result</name><name>17</name></person
<person><name>result</name><name>17</name></person>
Add closing >.
XML
'data' + 24
'data' + str(24)
Can't add int to string.
Python
SELECT age role FROM orders;
SELECT age, role FROM orders;
Add comma.
SQL
INSERT INTO items VALUES ('value',62)
INSERT INTO items (id, role) VALUES ('value',62);
Specify columns.
SQL
with open('config.json') as fp: data = fp.read()
with open('config.json') as fp: data = fp.read()
Correct.
Python
def handle puts 'message' end
def handle puts 'message' end
Correct.
Ruby
for num in range(62) print(num)
for num in range(62): print(num)
Colon after for.
Python
int* obj = nullptr; *obj=5;
int* obj = new int; *obj=5;
Allocate memory.
C++
int items[19]; items[19]=5;
int items[19]; if(19<19){{}} else items[19]=5;
Bounds check.
C++
fn process() -> i32 {{ 54 }}
fn process() -> i32 {{ 54 }}
Correct.
Rust
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
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
<?php // code ?>
<?php // code ?>
Correct.
PHP
if [ $index = 40 ]; then
if [ "$index" = 40 ]; then
Quote variable.
Shell
math.sqrt(52)
import math math.sqrt(52)
Import module first.
Python
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML
[97, 14, 35
[97, 14, 35]
Close bracket.
Python
if c = 69
if c == 69
Use ==.
Ruby
try {{ throw 'hello'; }} catch(e) {{}}
try {{ throw new Error('hello'); }} catch(e) {{}}
Throw Error objects.
JavaScript
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
cin >> foo cout << foo;
cin >> foo; cout << foo;
Add semicolon.
C++
var val int = 'result'
var val string = 'result'
Type mismatch.
Go
#header {{ color: #fff; }}
#header {{ color: #fff; }}
Correct.
CSS
items[63]
if (length(items) >= 63) items[63]
Check length.
R
.Order {{ color: #333; }}
.Order {{ color: #333; }}
Correct.
CSS
<div color=green>
<div style='color:green;'>
Use style attribute.
CSS
<ul><li>hello<li>world</ul>
<ul><li>hello</li><li>world</li></ul>
Close li.
HTML
{{"age":"info" "name":85}}
{{"age":"info", "name":85}}
Add comma.
JSON
function process(): void {{ return 14; }}
function process(): number {{ return 14; }}
Return type mismatch.
TypeScript
if ($a = 83) {{}}
if ($a -eq 83) {{}}
Use -eq.
PowerShell
if b = 66 {{}}
if b == 66 {{}}
Use ==.
Swift
my @arr = (57,9,69);
my @arr = (57,9,69);
Correct.
Perl
<br></br>
<br>
Self-closing.
HTML
if (data = 97)
if (data == 97)
Use ==.
C++
class User {{ int c; }};
class User {{ public: int c; }};
Make public.
C++
a > 65 & a < 52
a > 65 and a < 52
Use 'and' not '&'.
Python
// comment
/* comment */
Use /* */.
CSS
<div><p>test</div></p>
<div><p>test</p></div>
Nest properly.
HTML
render
render()
Add parentheses.
Swift
<img src='world.jpg'>
<img src='world.jpg' alt='desc'>
Add alt text.
HTML
disp('output')
disp('output')
Correct.
MATLAB
<table><tr><td>data<td>data</tr></table>
<table><tr><td>data</td><td>data</td></tr></table>
Close td.
HTML
String data = 'output';
String data = "output";
Double quotes.
Java
if x = 67
if x == 67
Use ==.
Go
28result = 10
result28 = 10
Variable cannot start with digit.
Python
match z {{ 1 => {{}} }}
match z {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
print('data')
print('data')
Correct.
R
{{'id':83, 'title' 87}}
{{'id':83, 'title':87}}
Colon missing.
Python
div {{ color=#fff; }}
div {{ color: #fff; }}
Use colon.
CSS
list[70]
if (list.indices.contains(70)) list[70]
Check index.
Kotlin
val data: Int = 'info'
val data: String = 'info'
Fix type.
Kotlin
assert b > 12
assert b > 12
Correct.
Python
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
if (z = 41)
if (z == 41)
Use ==.
R
int[] data = new int[18]; data[18] = 5;
int[] data = new int[18]; if (18 < data.length) data[18] = 5;
Check bounds.
Java
let mut c=100; let ref1=&mut c; let r2=&mut c;
let mut c=100; {{ let ref1=&mut c; }} let r2=&mut c;
Only one mutable borrow.
Rust
print 'hello'
print 'hello';
Add semicolon.
Perl
if (bar = 22) {{}}
if (bar == 22) {{}}
Use ==.
Kotlin
let item: number = 'info';
let item: string = 'info';
Fix type.
TypeScript
echo data data
echo 'data data'
Quote to prevent splitting.
Shell
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
else print('test')
else: print('test')
Colon after else.
Python
function test() {{ return {{key:'world'}} }}
function test() {{ return {{key:'world'}}; }}
Return object on same line.
JavaScript
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('data')); app.listen(14);
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('data')); app.listen(14, () => console.log('listening'));
Add callback.
Node.js
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
Product.save();
Product.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
fmt.Println 'result'
fmt.Println('result')
Missing parentheses.
Go
num = 12
num=12
No spaces.
Shell
<person name='world'/>
<person name="world"/>
Double quotes.
XML
<hr></hr>
<hr>
Self-closing.
HTML
id: result name: hello,
id: result name: hello
Remove comma.
YAML
{{'name':'value'}}
{{"name":"value"}}
Use double quotes.
JSON
if ($b = 41)
if ($b == 41)
Use ==.
Perl