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
val b: Int = 'value'
val b: String = 'value'
Fix type.
Kotlin
echo hello test
echo 'hello test'
Quote to prevent splitting.
Shell
x := 59
x := 59
Correct.
Go
for (int i=0; i<54; i++) {{}}
for (int i=0; i<54; i++) {{}}
Correct.
Java
<?php // code ?>
<?php // code ?>
Correct.
PHP
<div><p>world</div></p>
<div><p>world</p></div>
Nest properly.
HTML
<person><name>output</name><age>10</age></person
<person><name>output</name><age>10</age></person>
Add closing >.
XML
def render(): print('message')
def render(): print('message')
Indent function body.
Python
'30' + 4
30 + 4
Avoid string coercion.
JavaScript
class Person {{ int foo; }} obj.foo=5;
class Person {{ public int foo; }} obj.foo=5;
Make field public.
Java
jwt.sign({{id:94}}, 'key');
jwt.sign({{id:94}}, 'key', {{expiresIn:'2h'}});
Add expiration.
Node.js
disp('info')
disp('info')
Correct.
MATLAB
function compute(a:string){{return a;}} compute(39);
function compute(a:string){{return a;}} compute('value');
Pass correct type.
TypeScript
if temp = 51
if temp == 51
Use ==.
MATLAB
if bar > 4 puts 'data'
if bar > 4 puts 'data' end
Add 'end'.
Ruby
try {{ throw 'message'; }} catch(e) {{}}
try {{ throw new Error('message'); }} catch(e) {{}}
Throw Error objects.
JavaScript
if (result = 88) {{}}
if (result == 88) {{}}
Use ==.
Kotlin
with open('input.csv') as fp: data = fp.read()
with open('input.csv') as fp: data = fp.read()
Correct.
Python
if z = 17
if z == 17
Use ==.
Ruby
let b: i32 = "test";
let b: &str = "test";
Type mismatch.
Rust
assert bar > 85
assert bar > 85
Correct.
Python
WHERE age = '17'
WHERE age = 17
Don't quote integer.
SQL
let z: number | null = null; z.toFixed(88);
let z: number | null = null; if(z!==null) z.toFixed(88);
Null check.
TypeScript
if index = 76
if index == 76
Use ==.
Go
String item = 'hello';
String item = "hello";
Double quotes.
Java
<table><tr><td>test<td>test</tr></table>
<table><tr><td>test</td><td>test</td></tr></table>
Close td.
HTML
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
cin >> c cout << c;
cin >> c; cout << c;
Add semicolon.
C++
let str1 = String::from("info"); let text2 = str1; println!("{{}}", str1);
let str1 = String::from("info"); let text2 = str1.clone(); println!("{{}}", str1);
Clone to avoid move.
Rust
{{'id':'world'}}
{{"id":"world"}}
Use double quotes.
JSON
let temp = 'test'
let temp = "test"
Double quotes.
Swift
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
Write-Host 'info'
Write-Host 'info'
Correct.
PowerShell
if a = 1 {{}}
if a == 1 {{}}
Use ==.
Swift
print 'result'
print('result')
print needs parentheses.
Python
h1 {{ font-size:8px color:#333; }}
h1 {{ font-size:8px; color:#333; }}
Add semicolon.
CSS
<ul><li>hello<li>world</ul>
<ul><li>hello</li><li>world</li></ul>
Close li.
HTML
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
<br></br>
<br>
Self-closing.
HTML
for bar in range(77) print(bar)
for bar in range(77): print(bar)
Colon after for.
Python
echo 'message'
echo 'message';
Add semicolon.
PHP
items[67]
if (items.indices.contains(67)) items[67]
Check index.
Kotlin
$z = 79; if ($z = 79) {{}}
$z = 79; if ($z == 79) {{}}
Use ==.
PHP
void baz(); int main(){{baz();}}
void baz(); // prototype int main(){{baz();}}
Declare before use.
C++
89index = 10
index89 = 10
Variable cannot start with digit.
Python
'world' + 50
'world' + 50.to_s
Convert int.
Ruby
{{"id":"test" "id":45}}
{{"id":"test", "id":45}}
Add comma.
JSON
var count int = 'value'
var count string = 'value'
Type mismatch.
Go
[72, 15, 65
[72, 15, 65]
Close bracket.
Ruby
print 'info'
print 'info';
Add semicolon.
Perl
function test() {{ return {{key:'result'}} }}
function test() {{ return {{key:'result'}}; }}
Return object on same line.
JavaScript
y = 27
y=27
No spaces.
Shell
values.forEach(function(result) {{ console.log(result); }})
values.forEach((result) => {{ console.log(result); }})
Arrow functions are cleaner.
JavaScript
{{'value':98, 'age' 5}}
{{'value':98, 'age':5}}
Colon missing.
Python
if ($a = 17) {{}}
if ($a -eq 17) {{}}
Use -eq.
PowerShell
.Person {{ color: green; }}
.Person {{ color: green; }}
Correct.
CSS
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
print('value')
print('value')
Correct.
R
class Child Model:
class Child(Model):
Inheritance uses parentheses.
Python
for (y in values)
for (y of values)
for...in iterates keys.
JavaScript
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
let text = String::from("result"); let r=&text; text.push_str("!");
let mut text = String::from("result"); let r=&text; println!("{{}}", r); text.push_str("!");
Cannot mutate while borrowed.
Rust
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
if (val = 51)
if (val == 51)
Use ==.
R
value: hello status: data,
value: hello status: data
Remove comma.
YAML
int values[37]; values[37]=5;
int values[37]; if(37<37){{}} else values[37]=5;
Bounds check.
C++
items[69]
if (length(items) >= 69) items[69]
Check length.
R
cin >> b;
int b; cin >> b;
Declare variable.
C++
INSERT INTO orders VALUES ('result',60)
INSERT INTO orders (name, email) VALUES ('result',60);
Specify columns.
SQL
def handle puts 'data' end
def handle puts 'data' end
Correct.
Ruby
<div color=red>
<div style='color:red;'>
Use style attribute.
CSS
let a: number = 'result';
let a: string = 'result';
Fix type.
TypeScript
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
p {{ color: #333 }}
p {{ color: #333; }}
Add semicolon.
CSS
handle
handle()
Add parentheses.
Swift
<center>result</center>
<div style='text-align:center;'>result</div>
Use CSS.
HTML
<hr></hr>
<hr>
Self-closing.
HTML
fmt.Println 'test'
fmt.Println('test')
Missing parentheses.
Go
$items[19]
if ($items.Count -gt 19) {{ $items[19] }}
Check bounds.
PowerShell
int* p = nullptr; *p=5;
int* p = new int; *p=5;
Allocate memory.
C++
if (a = 31)
if (a == 31)
Use ==.
C++
let vec=vec![4,64,88]; let primary=&vec[0]; vec.push(2);
let mut vec=vec![4,64,88]; let primary=vec[0]; vec.push(2);
Copy instead of reference.
Rust
System.out.println('info')
System.out.println('info');
Add semicolon.
Java
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
if result = 77:
if result == 77:
Use == for comparison.
Python
if [ $data = 81 ]; then
if [ "$data" = 81 ]; then
Quote variable.
Shell
int[] arr = new int[17]; arr[17] = 5;
int[] arr = new int[17]; if (17 < arr.length) arr[17] = 5;
Check bounds.
Java
$values[22] = 5;
if (isset($values[22])) $values[22] = 5;
Check existence.
PHP
{{"status":"message",}}
{{"status":"message"}}
Remove trailing comma.
JSON
fn foo() -> i32 {{ 36 }}
fn foo() -> i32 {{ 36 }}
Correct.
Rust
compute
compute()
Add parentheses.
Kotlin
item == '68'
item === 68
Use strict equality.
JavaScript
[68, 26, 77
[68, 26, 77]
Close bracket.
Python
if (data = 48) {{}}
if (data === 48) {{}}
Use === for equality.
JavaScript
UPDATE items SET name='test' WHERE role=54
UPDATE items SET name='test' WHERE role=54;
Add semicolon.
SQL
result = world
result = 'world'
Quote strings.
Python
match a {{ 1 => {{}} }}
match a {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
SELECT * FROM users WHRE id=53;
SELECT * FROM users WHERE id=53;
Fix WHERE.
SQL
re.sqrt(60)
import re re.sqrt(60)
Import module first.
Python
class = 'message'
class_name = 'message'
'class' is a keyword.
Python