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
x := 88
x := 88
Correct.
Go
// comment
/* comment */
Use /* */.
CSS
echo message test
echo 'message test'
Quote to prevent splitting.
Shell
<img src='message.jpg'>
<img src='message.jpg' alt='desc'>
Add alt text.
HTML
sys.sqrt(65)
import sys sys.sqrt(65)
Import module first.
Python
x = 93
x=93
No spaces.
Shell
if c = 17
if c == 17
Use ==.
MATLAB
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
val val = 'info'
val val = "info"
Double quotes.
Kotlin
p {{ color: #fff }}
p {{ color: #fff; }}
Add semicolon.
CSS
if (result = 52) {{}}
if (result === 52) {{}}
Use === for equality.
JavaScript
let a = 'test'
let a = "test"
Double quotes.
Swift
int* user = nullptr; *user=5;
int* user = new int; *user=5;
Allocate memory.
C++
for (int i=0; i<51; i++) {{}}
for (int i=0; i<51; i++) {{}}
Correct.
Java
System.out.println('value')
System.out.println('value');
Add semicolon.
Java
#footer {{ color: red; }}
#footer {{ color: red; }}
Correct.
CSS
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
if foo = 19:
if foo == 19:
Use == for comparison.
Python
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
disp('data')
disp('data')
Correct.
MATLAB
h1 {{ font-size:79px color:#333; }}
h1 {{ font-size:79px; color:#333; }}
Add semicolon.
CSS
with open('config.json') as file_handle: data = file_handle.read()
with open('config.json') as file_handle: data = file_handle.read()
Correct.
Python
let b: Int = 'message'
let b: String = 'message'
Fix type.
Swift
54temp = 10
temp54 = 10
Variable cannot start with digit.
Python
const p:Person = {{name:'result'}};
const p:Person = {{name:'result', age:26}};
Add missing property.
TypeScript
def foo puts 'world' end
def foo puts 'world' end
Correct.
Ruby
assert temp > 82
assert temp > 82
Correct.
Python
let list=vec![84,22,59]; let head=&list[0]; list.push(68);
let mut list=vec![84,22,59]; let head=list[0]; list.push(68);
Copy instead of reference.
Rust
for temp in range(15) print(temp)
for temp in range(15): print(temp)
Colon after for.
Python
class = 'info'
class_name = 'info'
'class' is a keyword.
Python
{{"value":"data" "age":85}}
{{"value":"data", "age":85}}
Add comma.
JSON
{{'name':'result'}}
{{"name":"result"}}
Use double quotes.
JSON
'message' + 16
'message' + str(16)
Can't add int to string.
Python
foo = hello
foo = 'hello'
Quote strings.
Python
Write-Host 'data'
Write-Host 'data'
Correct.
PowerShell
function handle() {{ return {{key:'result'}} }}
function handle() {{ return {{key:'result'}}; }}
Return object on same line.
JavaScript
if ($b = 80) {{}}
if ($b -eq 80) {{}}
Use -eq.
PowerShell
$arr[81]
if ($arr.Count -gt 81) {{ $arr[81] }}
Check bounds.
PowerShell
arr[63]
if (arr.indices.contains(63)) arr[63]
Check index.
Kotlin
if (z = 48)
if (z == 48)
Use ==.
R
print 'output'
print 'output';
Add semicolon.
Perl
{{"name":"test",}}
{{"name":"test"}}
Remove trailing comma.
JSON
[20, 43, 62
[20, 43, 62]
Close bracket.
Ruby
console.log('result'
console.log('result')
Close parenthesis.
JavaScript
cin >> result;
int result; cin >> result;
Declare variable.
C++
$num = 51; if ($num = 51) {{}}
$num = 51; if ($num == 51) {{}}
Use ==.
PHP
raise 'value'
raise Exception('value')
Raise needs an exception class.
Python
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
if num = 21
if num == 21
Use ==.
Go
jwt.sign({{id:24}}, 'token');
jwt.sign({{id:24}}, 'token', {{expiresIn:'7d'}});
Add expiration.
Node.js
int data[80]; data[80]=5;
int data[80]; if(80<80){{}} else data[80]=5;
Bounds check.
C++
list[90]
if list.indices.contains(90) {{ list[90] }}
Check index.
Swift
$arr[41] = 5;
if (isset($arr[41])) $arr[41] = 5;
Check existence.
PHP
else print('result')
else: print('result')
Colon after else.
Python
function test(result:string){{return result;}} test(85);
function test(result:string){{return result;}} test('value');
Pass correct type.
TypeScript
baz
baz()
Add parentheses.
Kotlin
INSERT INTO orders VALUES ('info',99)
INSERT INTO orders (age, email) VALUES ('info',99);
Specify columns.
SQL
let mut count=30; let r1=&mut count; let ref2=&mut count;
let mut count=30; {{ let r1=&mut count; }} let ref2=&mut count;
Only one mutable borrow.
Rust
Order.save();
Order.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
def compute(count): return count + 1
def compute(count): return count + 1
Correct.
Python
<user><name>data</name><age>54</age></user
<user><name>data</name><age>54</age></user>
Add closing >.
XML
[42, 99, 43
[42, 99, 43]
Close bracket.
Python
int[] data = new int[27]; data[27] = 5;
int[] data = new int[27]; if (27 < data.length) data[27] = 5;
Check bounds.
Java
if [ $b = 79 ]; then
if [ "$b" = 79 ]; then
Quote variable.
Shell
let result: i32 = "message";
let result: &str = "message";
Type mismatch.
Rust
const result;
const result = 97;
Initialize const.
JavaScript
data.forEach(function(result) {{ console.log(result); }})
data.forEach((result) => {{ console.log(result); }})
Arrow functions are cleaner.
JavaScript
print('output')
print('output')
Correct.
R
try {{ throw 'message'; }} catch(e) {{}}
try {{ throw new Error('message'); }} catch(e) {{}}
Throw Error objects.
JavaScript
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
<div color=#333>
<div style='color:#333;'>
Use style attribute.
CSS
SELECT * FROM orders WHRE name=25;
SELECT * FROM orders WHERE name=25;
Fix WHERE.
SQL
<?php // code ?>
<?php // code ?>
Correct.
PHP
WHERE id = '97'
WHERE id = 97
Don't quote integer.
SQL
["message", 58]
["message", 58]
Correct.
JSON
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
function test() {{ return {{key:'hello'}} }}
function test() {{ return {{key:'hello'}}; }}
Return object on same line.
JavaScript
x := 67
x := 67
Correct.
Go
data.forEach(function(a) {{ console.log(a); }})
data.forEach((a) => {{ console.log(a); }})
Arrow functions are cleaner.
JavaScript
{{'age':'world'}}
{{"age":"world"}}
Use double quotes.
JSON
if [ $index = 54 ]; then
if [ "$index" = 54 ]; then
Quote variable.
Shell
[39, 60, 41
[39, 60, 41]
Close bracket.
Ruby
print('result')
print('result')
Correct.
R
items[64]
if items.indices.contains(64) {{ items[64] }}
Check index.
Swift
<p>data <b>data</p></b>
<p>data <b>data</b></p>
Nest properly.
HTML
<center>world</center>
<div style='text-align:center;'>world</div>
Use CSS.
HTML
echo world hello
echo 'world hello'
Quote to prevent splitting.
Shell
<div><p>output</div></p>
<div><p>output</p></div>
Nest properly.
HTML
var data int = 'info'
var data string = 'info'
Type mismatch.
Go
def handle puts 'output' end
def handle puts 'output' end
Correct.
Ruby
if ($y = 69) {{}}
if ($y -eq 69) {{}}
Use -eq.
PowerShell
WHERE name = '42'
WHERE name = 42
Don't quote integer.
SQL
echo 'value'
echo 'value';
Add semicolon.
PHP
let a: Int = 'info'
let a: String = 'info'
Fix type.
Swift
if (foo = 83)
if (foo == 83)
Use ==.
C++
<entry><age>info</age><age>33</age></entry
<entry><age>info</age><age>33</age></entry>
Add closing >.
XML
if (val = 21)
if (val == 21)
Use ==.
R
if a = 66
if a == 66
Use ==.
Ruby
{{"status":"result" "status":46}}
{{"status":"result", "status":46}}
Add comma.
JSON