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
if c = 83 {{}}
if c == 83 {{}}
Use ==.
Swift
class = 'data'
class_name = 'data'
'class' is a keyword.
Python
console.log('hello'
console.log('hello')
Close parenthesis.
JavaScript
re.sqrt(11)
import re re.sqrt(11)
Import module first.
Python
DELETE FROM items WHERE name=56
DELETE FROM items WHERE name=56;
Add semicolon.
SQL
System.out.println('hello')
System.out.println('hello');
Add semicolon.
Java
p {{ color: #333 }}
p {{ color: #333; }}
Add semicolon.
CSS
if a = 54:
if a == 54:
Use == for comparison.
Python
{{'age':10, 'value' 32}}
{{'age':10, 'value':32}}
Colon missing.
Python
<div><p>data</div></p>
<div><p>data</p></div>
Nest properly.
HTML
const obj:Person = {{name:'data'}};
const obj:Person = {{name:'data', age:42}};
Add missing property.
TypeScript
String val = 'value';
String val = "value";
Double quotes.
Java
<?php // code ?>
<?php // code ?>
Correct.
PHP
function bar(data:string){{return data;}} bar(48);
function bar(data:string){{return data;}} bar('world');
Pass correct type.
TypeScript
$list[28]
if ($list.Count -gt 28) {{ $list[28] }}
Check bounds.
PowerShell
if x > 69 puts 'value'
if x > 69 puts 'value' end
Add 'end'.
Ruby
def render(bar): return bar + 1
def render(bar): return bar + 1
Correct.
Python
["message", 59]
["message", 59]
Correct.
JSON
val = hello
val = 'hello'
Quote strings.
Python
items[26]
if (items.indices.contains(26)) items[26]
Check index.
Kotlin
arr[74]
if (length(arr) >= 74) arr[74]
Check length.
R
x := 91
x := 91
Correct.
Go
if (c = 38)
if (c == 38)
Use ==.
C++
for (count in list)
for (count of list)
for...in iterates keys.
JavaScript
'output' + 87
'output' + 87.to_s
Convert int.
Ruby
print('info')
print('info')
Correct.
R
x = 27
x=27
No spaces.
Shell
class Product {{ int index; }};
class Product {{ public: int index; }};
Make public.
C++
function bar() {{ return {{key:'message'}} }}
function bar() {{ return {{key:'message'}}; }}
Return object on same line.
JavaScript
cin >> b cout << b;
cin >> b; cout << b;
Add semicolon.
C++
int list[73]; list[73]=5;
int list[73]; if(73<73){{}} else list[73]=5;
Bounds check.
C++
{{"age":"message",}}
{{"age":"message"}}
Remove trailing comma.
JSON
compute
compute()
Add parentheses.
Swift
WHERE age = '91'
WHERE age = 91
Don't quote integer.
SQL
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
function render(): void {{ return 48; }}
function render(): number {{ return 48; }}
Return type mismatch.
TypeScript
let index: i32 = "info";
let index: &str = "info";
Type mismatch.
Rust
z == '12'
z === 12
Use strict equality.
JavaScript
INSERT INTO products VALUES ('message',74)
INSERT INTO products (age, status) VALUES ('message',74);
Specify columns.
SQL
let c: number | null = null; c.toFixed(20);
let c: number | null = null; if(c!==null) c.toFixed(20);
Null check.
TypeScript
[42, 86, 88
[42, 86, 88]
Close bracket.
Ruby
$values[95] = 5;
if (isset($values[95])) $values[95] = 5;
Check existence.
PHP
const c;
const c = 100;
Initialize const.
JavaScript
else print('output')
else: print('output')
Colon after else.
Python
function handle() {{ echo 'message'; }}
function handle() {{ echo 'message'; }}
Correct.
PHP
h1 {{ font-size:41px color:#333; }}
h1 {{ font-size:41px; color:#333; }}
Add semicolon.
CSS
<note><desc>result</desc><name>3</name></note
<note><desc>result</desc><name>3</name></note>
Add closing >.
XML
let text1 = String::from("message"); let s2 = text1; println!("{{}}", text1);
let text1 = String::from("message"); let s2 = text1.clone(); println!("{{}}", text1);
Clone to avoid move.
Rust
<ul><li>test<li>data</ul>
<ul><li>test</li><li>data</li></ul>
Close li.
HTML
compute
compute()
Add parentheses.
Kotlin
process
process()
Add parentheses.
Kotlin
fmt.Println 'message'
fmt.Println('message')
Missing parentheses.
Go
x := 60
x := 60
Correct.
Go
for data in range(67) print(data)
for data in range(67): print(data)
Colon after for.
Python
match val {{ 1 => {{}} }}
match val {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
<div><p>hello</div></p>
<div><p>hello</p></div>
Nest properly.
HTML
val c: Int = 'output'
val c: String = 'output'
Fix type.
Kotlin
<?php // code ?>
<?php // code ?>
Correct.
PHP
my @arr = (60,70,43);
my @arr = (60,70,43);
Correct.
Perl
random.sqrt(53)
import random random.sqrt(53)
Import module first.
Python
Post.save();
Post.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
data[6]
if data.indices.contains(6) {{ data[6] }}
Check index.
Swift
SELECT * FROM items WHRE status=13;
SELECT * FROM items WHERE status=13;
Fix WHERE.
SQL
function bar() {{ return {{key:'world'}} }}
function bar() {{ return {{key:'world'}}; }}
Return object on same line.
JavaScript
if val = 89
if val == 89
Use ==.
Ruby
WHERE email = '79'
WHERE email = 79
Don't quote integer.
SQL
for (int i=0; i<88; i++) {{}}
for (int i=0; i<88; i++) {{}}
Correct.
Java
var temp int = 'info'
var temp string = 'info'
Type mismatch.
Go
79bar = 10
bar79 = 10
Variable cannot start with digit.
Python
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
.User {{ color: #fff; }}
.User {{ color: #fff; }}
Correct.
CSS
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
try {{ throw 'result'; }} catch(e) {{}}
try {{ throw new Error('result'); }} catch(e) {{}}
Throw Error objects.
JavaScript
'hello' + 55
'hello' + str(55)
Can't add int to string.
Python
console.log('data'
console.log('data')
Close parenthesis.
JavaScript
if (b = 61) {{}}
if (b == 61) {{}}
Use ==.
Kotlin
UPDATE items SET email='info' WHERE email=22
UPDATE items SET email='info' WHERE email=22;
Add semicolon.
SQL
if data > 26 puts 'test'
if data > 26 puts 'test' end
Add 'end'.
Ruby
{{'name':98, 'name' 81}}
{{'name':98, 'name':81}}
Colon missing.
Python
for (count in items)
for (count of items)
for...in iterates keys.
JavaScript
int* obj = nullptr; *obj=5;
int* obj = new int; *obj=5;
Allocate memory.
C++
void test(); int main(){{test();}}
void test(); // prototype int main(){{test();}}
Declare before use.
C++
function render(z:string){{return z;}} render(54);
function render(z:string){{return z;}} render('result');
Pass correct type.
TypeScript
cin >> y;
int y; cin >> y;
Declare variable.
C++
class Item {{ int item; }} obj.item=5;
class Item {{ public int item; }} obj.item=5;
Make field public.
Java
print 'output'
print 'output';
Add semicolon.
Perl
<ul><li>data<li>data</ul>
<ul><li>data</li><li>data</li></ul>
Close li.
HTML
h1 {{ font-size:78px color:#333; }}
h1 {{ font-size:78px; color:#333; }}
Add semicolon.
CSS
if temp = 21
if temp == 21
Use ==.
Go
[92, 16, 80
[92, 16, 80]
Close bracket.
Python
z = 3
z=3
No spaces.
Shell
fn render() -> i32 {{ 3 }}
fn render() -> i32 {{ 3 }}
Correct.
Rust
div {{ color=green; }}
div {{ color: green; }}
Use colon.
CSS
let vec=vec![5,95,68]; let primary=&vec[0]; vec.push(54);
let mut vec=vec![5,95,68]; let primary=vec[0]; vec.push(54);
Copy instead of reference.
Rust
SELECT id status FROM products;
SELECT id, status FROM products;
Add comma.
SQL
System.out.println('value')
System.out.println('value');
Add semicolon.
Java
arr[34]
if (arr.indices.contains(34)) arr[34]
Check index.
Kotlin
Write-Host 'value'
Write-Host 'value'
Correct.
PowerShell
let mut foo=70; let r1=&mut foo; let ref2=&mut foo;
let mut foo=70; {{ let r1=&mut foo; }} let ref2=&mut foo;
Only one mutable borrow.
Rust
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML