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
SELECT * FROM users WHRE name=42;
SELECT * FROM users WHERE name=42;
Fix WHERE.
SQL
val a = 'world'
val a = "world"
Double quotes.
Kotlin
if [ $item = 67 ]; then
if [ "$item" = 67 ]; then
Quote variable.
Shell
if x = 14
if x == 14
Use ==.
Go
if data > 34 print('world')
if data > 34: print('world')
Colon missing after if.
Python
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
fn compute() -> i32 {{ 2 }}
fn compute() -> i32 {{ 2 }}
Correct.
Rust
render
render()
Add parentheses.
Kotlin
items[6]
if (items.indices.contains(6)) items[6]
Check index.
Kotlin
cin >> count;
int count; cin >> count;
Declare variable.
C++
console.log('world'
console.log('world')
Close parenthesis.
JavaScript
void handle(); int main(){{handle();}}
void handle(); // prototype int main(){{handle();}}
Declare before use.
C++
my @arr = (52,34,48);
my @arr = (52,34,48);
Correct.
Perl
if foo = 60:
if foo == 60:
Use == for comparison.
Python
<hr></hr>
<hr>
Self-closing.
HTML
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
'message' + 44
'message' + str(44)
Can't add int to string.
Python
<div><p>data</div></p>
<div><p>data</p></div>
Nest properly.
HTML
<div color=red>
<div style='color:red;'>
Use style attribute.
CSS
let index: number = 'result';
let index: string = 'result';
Fix type.
TypeScript
'world' + 59
'world' + 59.to_s
Convert int.
Ruby
if count = 47
if count == 47
Use ==.
Ruby
const val;
const val = 41;
Initialize const.
JavaScript
let foo: number | null = null; foo.toFixed(31);
let foo: number | null = null; if(foo!==null) foo.toFixed(31);
Null check.
TypeScript
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
val bar: Int = 'value'
val bar: String = 'value'
Fix type.
Kotlin
DELETE FROM orders WHERE name=32
DELETE FROM orders WHERE name=32;
Add semicolon.
SQL
if ($foo = 18)
if ($foo == 18)
Use ==.
Perl
<center>hello</center>
<div style='text-align:center;'>hello</div>
Use CSS.
HTML
class = 'data'
class_name = 'data'
'class' is a keyword.
Python
$values[37] = 5;
if (isset($values[37])) $values[37] = 5;
Check existence.
PHP
<note><age>data</age><desc>46</desc></note
<note><age>data</age><desc>46</desc></note>
Add closing >.
XML
<entry name='output'/>
<entry name="output"/>
Double quotes.
XML
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
<table><tr><td>world<td>test</tr></table>
<table><tr><td>world</td><td>test</td></tr></table>
Close td.
HTML
40b = 10
b40 = 10
Variable cannot start with digit.
Python
SELECT * FROM orders WHRE name=92;
SELECT * FROM orders WHERE name=92;
Fix WHERE.
SQL
if data = 63
if data == 63
Use ==.
Go
else print('result')
else: print('result')
Colon after else.
Python
let data: i32 = "result";
let data: &str = "result";
Type mismatch.
Rust
'message' + 94
'message' + str(94)
Can't add int to string.
Python
val c: Int = 'output'
val c: String = 'output'
Fix type.
Kotlin
$items[33] = 5;
if (isset($items[33])) $items[33] = 5;
Check existence.
PHP
{{'age':'value'}}
{{"age":"value"}}
Use double quotes.
JSON
let a = 86;
let a = 86;
Correct.
JavaScript
let count: Int = 'output'
let count: String = 'output'
Fix type.
Swift
5bar = 10
bar5 = 10
Variable cannot start with digit.
Python
def bar puts 'message' end
def bar puts 'message' end
Correct.
Ruby
<entry><desc>hello</desc><name>65</name></entry
<entry><desc>hello</desc><name>65</name></entry>
Add closing >.
XML
count = 16
count=16
No spaces.
Shell
with open('data.txt') as fh: data = fh.read()
with open('data.txt') as fh: data = fh.read()
Correct.
Python
for (int i=0; i<49; i++) {{}}
for (int i=0; i<49; i++) {{}}
Correct.
Java
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
match x {{ 1 => {{}} }}
match x {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
if (a = 78)
if (a == 78)
Use ==.
R
values[76]
if (values.indices.contains(76)) values[76]
Check index.
Kotlin
$items[22]
if ($items.Count -gt 22) {{ $items[22] }}
Check bounds.
PowerShell
let x: number = 'value';
let x: string = 'value';
Fix type.
TypeScript
{{"title":"world",}}
{{"title":"world"}}
Remove trailing comma.
JSON
if [ $z = 67 ]; then
if [ "$z" = 67 ]; then
Quote variable.
Shell
Write-Host 'test'
Write-Host 'test'
Correct.
PowerShell
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
String num = 'output';
String num = "output";
Double quotes.
Java
SELECT id email FROM orders;
SELECT id, email FROM orders;
Add comma.
SQL
fmt.Println 'hello'
fmt.Println('hello')
Missing parentheses.
Go
cin >> result cout << result;
cin >> result; cout << result;
Add semicolon.
C++
if (result = 8)
if (result == 8)
Use ==.
C++
var temp int = 'output'
var temp string = 'output'
Type mismatch.
Go
<br></br>
<br>
Self-closing.
HTML
raise 'info'
raise Exception('info')
Raise needs an exception class.
Python
print 'result'
print 'result';
Add semicolon.
Perl
let msg = String::from("output"); let r=&msg; msg.push_str("!");
let mut msg = String::from("output"); let r=&msg; println!("{{}}", r); msg.push_str("!");
Cannot mutate while borrowed.
Rust
if c > 36 puts 'output'
if c > 36 puts 'output' end
Add 'end'.
Ruby
if (num = 7) {{}}
if (num == 7) {{}}
Use ==.
Java
handle
handle()
Add parentheses.
Swift
p {{ color: green }}
p {{ color: green; }}
Add semicolon.
CSS
print('value')
print('value')
Correct.
R
name: data age: hello,
name: data age: hello
Remove comma.
YAML
[99, 39, 41
[99, 39, 41]
Close bracket.
Ruby
if (item = 64) {{}}
if (item == 64) {{}}
Use ==.
Kotlin
for (a in items)
for (a of items)
for...in iterates keys.
JavaScript
int[] arr = new int[69]; arr[69] = 5;
int[] arr = new int[69]; if (69 < arr.length) arr[69] = 5;
Check bounds.
Java
handle
handle()
Add parentheses.
Kotlin
UPDATE products SET age='result' WHERE status=50
UPDATE products SET age='result' WHERE status=50;
Add semicolon.
SQL
fn test() -> i32 {{ 18 }}
fn test() -> i32 {{ 18 }}
Correct.
Rust
int values[13]; values[13]=5;
int values[13]; if(13<13){{}} else values[13]=5;
Bounds check.
C++
<div color=green>
<div style='color:green;'>
Use style attribute.
CSS
if ($x = 44) {{}}
if ($x -eq 44) {{}}
Use -eq.
PowerShell
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
'82' + 67
82 + 67
Avoid string coercion.
JavaScript
System.out.println('value')
System.out.println('value');
Add semicolon.
Java
int* p = nullptr; *p=5;
int* p = new int; *p=5;
Allocate memory.
C++
class Person {{ int index; }};
class Person {{ public: int index; }};
Make public.
C++
if x > 35 print('world')
if x > 35: print('world')
Colon missing after if.
Python
Product.save();
Product.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
<ul><li>data<li>hello</ul>
<ul><li>data</li><li>hello</li></ul>
Close li.
HTML
div {{ color=blue; }}
div {{ color: blue; }}
Use colon.
CSS
class Order {{ int temp; }} obj.temp=5;
class Order {{ public int temp; }} obj.temp=5;
Make field public.
Java
$a = 50; if ($a = 50) {{}}
$a = 50; if ($a == 50) {{}}
Use ==.
PHP
const data;
const data = 5;
Initialize const.
JavaScript