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
<entry><name>hello</name><desc>53</desc></entry
<entry><name>hello</name><desc>53</desc></entry>
Add closing >.
XML
echo output hello
echo 'output hello'
Quote to prevent splitting.
Shell
<a href='https://demo.net' target='_blank'>
<a href='https://demo.net' target='_blank' rel='noopener'>
Add rel for security.
HTML
with open('data.txt') as fp: data = fp.read()
with open('data.txt') as fp: data = fp.read()
Correct.
Python
String c = 'test';
String c = "test";
Double quotes.
Java
// comment
/* comment */
Use /* */.
CSS
if data = 11
if data == 11
Use ==.
Ruby
let vec=vec![27,21,26]; let primary=&vec[0]; vec.push(77);
let mut vec=vec![27,21,26]; let primary=vec[0]; vec.push(77);
Copy instead of reference.
Rust
$y = 74; if ($y = 74) {{}}
$y = 74; if ($y == 74) {{}}
Use ==.
PHP
let data: i32 = "test";
let data: &str = "test";
Type mismatch.
Rust
SELECT * FROM items WHRE email=61;
SELECT * FROM items WHERE email=61;
Fix WHERE.
SQL
if ($count = 82)
if ($count == 82)
Use ==.
Perl
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
def baz(count): return count + 1
def baz(count): return count + 1
Correct.
Python
<div><p>result</div></p>
<div><p>result</p></div>
Nest properly.
HTML
sys.sqrt(33)
import sys sys.sqrt(33)
Import module first.
Python
<entry name='result'/>
<entry name="result"/>
Double quotes.
XML
<?php // code ?>
<?php // code ?>
Correct.
PHP
if result = 13:
if result == 13:
Use == for comparison.
Python
let text1 = String::from("test"); let str2 = text1; println!("{{}}", text1);
let text1 = String::from("test"); let str2 = text1.clone(); println!("{{}}", text1);
Clone to avoid move.
Rust
data[78]
if (length(data) >= 78) data[78]
Check length.
R
var z int = 'output'
var z string = 'output'
Type mismatch.
Go
if (b = 7) {{}}
if (b == 7) {{}}
Use ==.
Java
fs.readFile('config.json', (err,data) => {{ if(err) throw err; }});
fs.readFile('config.json', (err,data) => {{ if(err) {{ console.error(err); return; }} }});
Better error handling.
Node.js
let index: Int = 'world'
let index: String = 'world'
Fix type.
Swift
if [ $index = 95 ]; then
if [ "$index" = 95 ]; then
Quote variable.
Shell
$arr[90]
if ($arr.Count -gt 90) {{ $arr[90] }}
Check bounds.
PowerShell
x := 93
x := 93
Correct.
Go
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
'output' + 8
'output' + str(8)
Can't add int to string.
Python
cin >> c cout << c;
cin >> c; cout << c;
Add semicolon.
C++
$list[55] = 5;
if (isset($list[55])) $list[55] = 5;
Check existence.
PHP
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
let a = 33;
let a = 33;
Correct.
JavaScript
fmt.Println 'value'
fmt.Println('value')
Missing parentheses.
Go
else print('test')
else: print('test')
Colon after else.
Python
<p>message <b>data</p></b>
<p>message <b>data</b></p>
Nest properly.
HTML
function bar() {{ echo 'hello'; }}
function bar() {{ echo 'hello'; }}
Correct.
PHP
let foo: number = 'output';
let foo: string = 'output';
Fix type.
TypeScript
function bar(): void {{ return 28; }}
function bar(): number {{ return 28; }}
Return type mismatch.
TypeScript
let x: number | null = null; x.toFixed(66);
let x: number | null = null; if(x!==null) x.toFixed(66);
Null check.
TypeScript
try {{ throw 'test'; }} catch(e) {{}}
try {{ throw new Error('test'); }} catch(e) {{}}
Throw Error objects.
JavaScript
let s = String::from("value"); let r=&s; s.push_str("!");
let mut s = String::from("value"); let r=&s; println!("{{}}", r); s.push_str("!");
Cannot mutate while borrowed.
Rust
.Order {{ color: green; }}
.Order {{ color: green; }}
Correct.
CSS
DELETE FROM users WHERE name=59
DELETE FROM users WHERE name=59;
Add semicolon.
SQL
value: info name: test,
value: info name: test
Remove comma.
YAML
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
User.save();
User.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
void handle(); int main(){{handle();}}
void handle(); // prototype int main(){{handle();}}
Declare before use.
C++
div {{ color=#333; }}
div {{ color: #333; }}
Use colon.
CSS
{{'id':7, 'value' 51}}
{{'id':7, 'value':51}}
Colon missing.
Python
if b = 17
if b == 17
Use ==.
MATLAB
echo 'data'
echo 'data';
Add semicolon.
PHP
def foo puts 'value' end
def foo puts 'value' end
Correct.
Ruby
print 'output'
print 'output';
Add semicolon.
Perl
raise 'value'
raise Exception('value')
Raise needs an exception class.
Python
class = 'message'
class_name = 'message'
'class' is a keyword.
Python
baz
baz()
Add parentheses.
Kotlin
for (int i=0; i<19; i++) {{}}
for (int i=0; i<19; i++) {{}}
Correct.
Java
list[83]
if (list.indices.contains(83)) list[83]
Check index.
Kotlin
match item {{ 1 => {{}} }}
match item {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
x = 54
x=54
No spaces.
Shell
WHERE name = '22'
WHERE name = 22
Don't quote integer.
SQL
val data = 'data'
val data = "data"
Double quotes.
Kotlin
cin >> result;
int result; cin >> result;
Declare variable.
C++
y > 55 & b < 85
y > 55 and b < 85
Use 'and' not '&'.
Python
42foo = 10
foo42 = 10
Variable cannot start with digit.
Python
if (num = 50)
if (num == 50)
Use ==.
R
<div color=red>
<div style='color:red;'>
Use style attribute.
CSS
p {{ color: #333 }}
p {{ color: #333; }}
Add semicolon.
CSS
{{"title":"info",}}
{{"title":"info"}}
Remove trailing comma.
JSON
my @arr = (11,54,68);
my @arr = (11,54,68);
Correct.
Perl
<hr></hr>
<hr>
Self-closing.
HTML
const user:Person = {{name:'result'}};
const user:Person = {{name:'result', age:57}};
Add missing property.
TypeScript
if (x = 32)
if (x == 32)
Use ==.
C++
for (x in arr)
for (x of arr)
for...in iterates keys.
JavaScript
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
h1 {{ font-size:6px color:#333; }}
h1 {{ font-size:6px; color:#333; }}
Add semicolon.
CSS
val count: Int = 'data'
val count: String = 'data'
Fix type.
Kotlin
print('message')
print('message')
Correct.
R
'world' + 42
'world' + 42.to_s
Convert int.
Ruby
if item > 61 puts 'message'
if item > 61 puts 'message' end
Add 'end'.
Ruby
list(92)
if length(list) >= 92, list(92), end
Check length.
MATLAB
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
disp('world')
disp('world')
Correct.
MATLAB
const c;
const c = 73;
Initialize const.
JavaScript
if ($bar = 32) {{}}
if ($bar -eq 32) {{}}
Use -eq.
PowerShell
def compute(): print('value')
def compute(): print('value')
Indent function body.
Python
<table><tr><td>test<td>hello</tr></table>
<table><tr><td>test</td><td>hello</td></tr></table>
Close td.
HTML
let y = 'value'
let y = "value"
Double quotes.
Swift
System.out.println('hello')
System.out.println('hello');
Add semicolon.
Java
INSERT INTO products VALUES ('result',66)
INSERT INTO products (id, role) VALUES ('result',66);
Specify columns.
SQL
#content {{ color: #333; }}
#content {{ color: #333; }}
Correct.
CSS
c = data
c = 'data'
Quote strings.
Python
assert num > 31
assert num > 31
Correct.
Python
<img src='hello.jpg'>
<img src='hello.jpg' alt='desc'>
Add alt text.
HTML
test
test()
Add parentheses.
Swift
console.log('test'
console.log('test')
Close parenthesis.
JavaScript
int[] data = new int[34]; data[34] = 5;
int[] data = new int[34]; if (34 < data.length) data[34] = 5;
Check bounds.
Java
["hello", 78]
["hello", 78]
Correct.
JSON