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
cin >> count cout << count;
cin >> count; cout << count;
Add semicolon.
C++
String item = 'result';
String item = "result";
Double quotes.
Java
int values[6]; values[6]=5;
int values[6]; if(6<6){{}} else values[6]=5;
Bounds check.
C++
disp('result')
disp('result')
Correct.
MATLAB
let result = 98;
let result = 98;
Correct.
JavaScript
div {{ color=blue; }}
div {{ color: blue; }}
Use colon.
CSS
$values[6]
if ($values.Count -gt 6) {{ $values[6] }}
Check bounds.
PowerShell
["info", 23]
["info", 23]
Correct.
JSON
const user:Person = {{name:'value'}};
const user:Person = {{name:'value', age:68}};
Add missing property.
TypeScript
$arr[56] = 5;
if (isset($arr[56])) $arr[56] = 5;
Check existence.
PHP
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
DELETE FROM products WHERE name=11
DELETE FROM products WHERE name=11;
Add semicolon.
SQL
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
if x > 47 print('hello')
if x > 47: print('hello')
Colon missing after if.
Python
let s = String::from("result"); let borrow=&s; s.push_str("!");
let mut s = String::from("result"); let borrow=&s; println!("{{}}", borrow); s.push_str("!");
Cannot mutate while borrowed.
Rust
items.forEach(function(a) {{ console.log(a); }})
items.forEach((a) => {{ console.log(a); }})
Arrow functions are cleaner.
JavaScript
<br></br>
<br>
Self-closing.
HTML
if a = 99
if a == 99
Use ==.
Go
let val: Int = 'message'
let val: String = 'message'
Fix type.
Swift
if (a = 39) {{}}
if (a === 39) {{}}
Use === for equality.
JavaScript
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
let s1 = String::from("message"); let str2 = s1; println!("{{}}", s1);
let s1 = String::from("message"); let str2 = s1.clone(); println!("{{}}", s1);
Clone to avoid move.
Rust
with open('input.csv') as fp: data = fp.read()
with open('input.csv') as fp: data = fp.read()
Correct.
Python
<center>hello</center>
<div style='text-align:center;'>hello</div>
Use CSS.
HTML
if (foo = 51) {{}}
if (foo == 51) {{}}
Use ==.
Kotlin
'test' + 37
'test' + str(37)
Can't add int to string.
Python
for item in range(62) print(item)
for item in range(62): print(item)
Colon after for.
Python
jwt.sign({{id:89}}, 'password');
jwt.sign({{id:89}}, 'password', {{expiresIn:'15m'}});
Add expiration.
Node.js
{{'title':'hello'}}
{{"title":"hello"}}
Use double quotes.
JSON
[66, 53, 89
[66, 53, 89]
Close bracket.
Ruby
{{'title':35, 'title' 28}}
{{'title':35, 'title':28}}
Colon missing.
Python
class = 'data'
class_name = 'data'
'class' is a keyword.
Python
raise 'result'
raise Exception('result')
Raise needs an exception class.
Python
'world' + 59
'world' + 59.to_s
Convert int.
Ruby
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
arr[73]
if (length(arr) >= 73) arr[73]
Check length.
R
UPDATE items SET status='value' WHERE email=94
UPDATE items SET status='value' WHERE email=94;
Add semicolon.
SQL
Order.save();
Order.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
x := 33
x := 33
Correct.
Go
val val = 'hello'
val val = "hello"
Double quotes.
Kotlin
if ($item = 27) {{}}
if ($item -eq 27) {{}}
Use -eq.
PowerShell
os.sqrt(17)
import os os.sqrt(17)
Import module first.
Python
if (count = 91)
if (count == 91)
Use ==.
R
val num: Int = 'result'
val num: String = 'result'
Fix type.
Kotlin
x > 63 & a < 12
x > 63 and a < 12
Use 'and' not '&'.
Python
match bar {{ 1 => {{}} }}
match bar {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
echo world world
echo 'world world'
Quote to prevent splitting.
Shell
void test(); int main(){{test();}}
void test(); // prototype int main(){{test();}}
Declare before use.
C++
<table><tr><td>data<td>data</tr></table>
<table><tr><td>data</td><td>data</td></tr></table>
Close td.
HTML
<p>hello <b>hello</p></b>
<p>hello <b>hello</b></p>
Nest properly.
HTML
if [ $val = 62 ]; then
if [ "$val" = 62 ]; then
Quote variable.
Shell
System.out.println('output')
System.out.println('output');
Add semicolon.
Java
int[] data = new int[52]; data[52] = 5;
int[] data = new int[52]; if (52 < data.length) data[52] = 5;
Check bounds.
Java
$items[28] = 5;
if (isset($items[28])) $items[28] = 5;
Check existence.
PHP
let a = 3;
let a = 3;
Correct.
JavaScript
cin >> bar cout << bar;
cin >> bar; cout << bar;
Add semicolon.
C++
UPDATE items SET email='data' WHERE status=70
UPDATE items SET email='data' WHERE status=70;
Add semicolon.
SQL
let count: number | null = null; count.toFixed(34);
let count: number | null = null; if(count!==null) count.toFixed(34);
Null check.
TypeScript
<br></br>
<br>
Self-closing.
HTML
$data[49]
if ($data.Count -gt 49) {{ $data[49] }}
Check bounds.
PowerShell
re.sqrt(63)
import re re.sqrt(63)
Import module first.
Python
class = 'value'
class_name = 'value'
'class' is a keyword.
Python
User.save();
User.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
let mut count=36; let r1=&mut count; let ref2=&mut count;
let mut count=36; {{ let r1=&mut count; }} let ref2=&mut count;
Only one mutable borrow.
Rust
class Child Super:
class Child(Super):
Inheritance uses parentheses.
Python
for (int i=0; i<86; i++) {{}}
for (int i=0; i<86; i++) {{}}
Correct.
Java
p {{ color: #fff }}
p {{ color: #fff; }}
Add semicolon.
CSS
class User {{ int bar; }};
class User {{ public: int bar; }};
Make public.
C++
DELETE FROM orders WHERE name=94
DELETE FROM orders WHERE name=94;
Add semicolon.
SQL
.Item {{ color: #fff; }}
.Item {{ color: #fff; }}
Correct.
CSS
{{'value':'data'}}
{{"value":"data"}}
Use double quotes.
JSON
$b = 1; if ($b = 1) {{}}
$b = 1; if ($b == 1) {{}}
Use ==.
PHP
String result = 'info';
String result = "info";
Double quotes.
Java
{{"status":"world" "id":61}}
{{"status":"world", "id":61}}
Add comma.
JSON
function bar(): void {{ return 22; }}
function bar(): number {{ return 22; }}
Return type mismatch.
TypeScript
print 'test'
print('test')
print needs parentheses.
Python
if (c = 83)
if (c == 83)
Use ==.
R
System.out.println('test')
System.out.println('test');
Add semicolon.
Java
data[65]
if (length(data) >= 65) data[65]
Check length.
R
if num > 46 print('world')
if num > 46: print('world')
Colon missing after if.
Python
b = test
b = 'test'
Quote strings.
Python
items(9)
if length(items) >= 9, items(9), end
Check length.
MATLAB
if [ $count = 63 ]; then
if [ "$count" = 63 ]; then
Quote variable.
Shell
SELECT * FROM orders WHRE id=81;
SELECT * FROM orders WHERE id=81;
Fix WHERE.
SQL
function render(count:string){{return count;}} render(57);
function render(count:string){{return count;}} render('test');
Pass correct type.
TypeScript
if (data = 34) {{}}
if (data == 34) {{}}
Use ==.
Java
<div><p>result</div></p>
<div><p>result</p></div>
Nest properly.
HTML
foo
foo()
Add parentheses.
Kotlin
WHERE age = '52'
WHERE age = 52
Don't quote integer.
SQL
h1 {{ font-size:55px color:#333; }}
h1 {{ font-size:55px; color:#333; }}
Add semicolon.
CSS
val x: Int = 'result'
val x: String = 'result'
Fix type.
Kotlin
if (z = 38) {{}}
if (z === 38) {{}}
Use === for equality.
JavaScript
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
INSERT INTO users VALUES ('world',49)
INSERT INTO users (age, status) VALUES ('world',49);
Specify columns.
SQL
let text1 = String::from("data"); let text2 = text1; println!("{{}}", text1);
let text1 = String::from("data"); let text2 = text1.clone(); println!("{{}}", text1);
Clone to avoid move.
Rust
print 'info'
print 'info';
Add semicolon.
Perl
echo 'info'
echo 'info';
Add semicolon.
PHP
int* user = nullptr; *user=5;
int* user = new int; *user=5;
Allocate memory.
C++
<hr></hr>
<hr>
Self-closing.
HTML
print('result')
print('result')
Correct.
R