Datasets:
Gugu8
/
Code-Syntax-Expanded

Dataset card Data Studio Files
xet
 Community
1
wrong_code
stringlengths
3
123
correct_code
stringlengths
3
155
explanation
stringclasses
101 values
language
stringclasses
26 values
<center>hello</center>
<div style='text-align:center;'>hello</div>
Use CSS.
HTML
fs.readFile('data.txt', (err,data) => {{ if(err) throw err; }});
fs.readFile('data.txt', (err,data) => {{ if(err) {{ console.error(err); return; }} }});
Better error handling.
Node.js
with open('log.txt') as fh: data = fh.read()
with open('log.txt') as fh: data = fh.read()
Correct.
Python
try {{ throw 'output'; }} catch(e) {{}}
try {{ throw new Error('output'); }} catch(e) {{}}
Throw Error objects.
JavaScript
<hr></hr>
<hr>
Self-closing.
HTML
name: world age: 75
name: world age: 75
Correct.
YAML
class Product {{ int a; }};
class Product {{ public: int a; }};
Make public.
C++
function baz() {{ echo 'result'; }}
function baz() {{ echo 'result'; }}
Correct.
PHP
class Order {{ int y; }} obj.y=5;
class Order {{ public int y; }} obj.y=5;
Make field public.
Java
{{'title':'output'}}
{{"title":"output"}}
Use double quotes.
JSON
if (num = 83) {{}}
if (num == 83) {{}}
Use ==.
Java
class = 'data'
class_name = 'data'
'class' is a keyword.
Python
render
render()
Add parentheses.
Kotlin
if bar > 84 print('message')
if bar > 84: print('message')
Colon missing after if.
Python
assert c > 83
assert c > 83
Correct.
Python
String name = 'data';
String name = 'data';
Correct.
Dart
x <- 5; if (x > 3) print('large')
x <- 5; if (x > 3) print('large')
Correct.
R
int items[95]; items[95]=5;
int items[95]; if(95<95){{}} else items[95]=5;
Bounds check.
C++
let num = 84; let num = 12;
let num = 84; num = 12;
Duplicate declaration.
JavaScript
{{"status":"result" "age":82}}
{{"status":"result", "age":82}}
Add comma.
JSON
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
os.sqrt(16)
import os os.sqrt(16)
Import module first.
Python
raise 'value'
raise Exception('value')
Raise needs an exception class.
Python
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
<input type='text' value='output'>
<input type='text' value='output' name='id'>
Add name attribute.
HTML
function foo() {{ return {{key:'test'}} }}
function foo() {{ return {{key:'test'}}; }}
Return object on same line.
JavaScript
values(31)
if length(values) >= 31, values(31), end
Check length.
MATLAB
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('world')); app.listen(35);
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('world')); app.listen(35, () => console.log('listening'));
Add callback.
Node.js
const int x; x = 5;
const int x = 5;
Const must be initialized.
C++
cin >> bar cout << bar;
cin >> bar; cout << bar;
Add semicolon.
C++
val x = 'info'
val x = "info"
Double quotes.
Kotlin
if (x = 24)
if (x == 24)
Use ==.
Scala
DELETE FROM products WHERE id=77
DELETE FROM products WHERE id=77;
Add semicolon.
SQL
type MyType = string | number; let x: MyType = true;
type MyType = string | number; let x: MyType = 'hello';
Type not in union.
TypeScript
{{'age':90, 'name' 27}}
{{'age':90, 'name':27}}
Colon missing.
Python
for (z in data)
for (z of data)
for...in iterates keys.
JavaScript
if [ $c = 13 ]; then
if [ "$c" = 13 ]; then
Quote variable.
Shell
<p>result <b>world</p></b>
<p>result <b>world</b></p>
Nest properly.
HTML
if val > 96 puts 'world'
if val > 96 puts 'world' end
Add 'end'.
Ruby
jwt.sign({{id:44}}, 'key');
jwt.sign({{id:44}}, 'key', {{expiresIn:'30m'}});
Add expiration.
Node.js
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
for x in range(82) print(x)
for x in range(82): print(x)
Colon after for.
Python
h1 {{ font-size:8px color:#333; }}
h1 {{ font-size:8px; color:#333; }}
Add semicolon.
CSS
<ul><li>test<li>data</ul>
<ul><li>test</li><li>data</li></ul>
Close li.
HTML
def process puts 'result' end
def process puts 'result' end
Correct.
Ruby
cin >> num;
int num; cin >> num;
Declare variable.
C++
List(27,57,79)
List(27,57,79)
Correct.
Scala
if (result) console.log('yes') else console.log('no')
if (result) console.log('yes'); else console.log('no');
Missing semicolon.
JavaScript
<table><tr><td>hello<td>world</tr></table>
<table><tr><td>hello</td><td>world</td></tr></table>
Close td.
HTML
switch(b){{ case 3: break; }}
switch(b){{ case 3: break; default: break; }}
Add default case.
Java
def handle(): print('message')
def handle(): print('message')
Indent function body.
Python
JOIN orders ON users.id = orders.age
JOIN orders ON users.id = orders.age
Correct.
SQL
console.log('test'
console.log('test')
Close parenthesis.
JavaScript
lambda x: x+1
lambda x: x+1
Correct lambda.
Python
$x = 5; echo $x
$x = 5; echo $x;
Missing semicolon.
PHP
<person age=56>
<person age="56">
Quote attribute.
XML
disp('value')
disp('value')
Correct.
MATLAB
val z = 92; z = 11
var z = 92; z = 11
Use var for reassignment.
Scala
{ "name": "message" }
{ "name": "message" }
Correct.
JSON
val data: Int = 'world'
val data: String = 'world'
Fix type.
Kotlin
$x = 5; if ($x -eq 5) { Write-Host 'yes' }
$x = 5; if ($x -eq 5) { Write-Host 'yes' }
Correct.
PowerShell
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
c = 29
c=29
No spaces.
Shell
WHERE id = '17'
WHERE id = 17
Don't quote integer.
SQL
SELECT * FROM items WHRE age=25;
SELECT * FROM items WHERE age=25;
Fix WHERE.
SQL
print 'message'
print 'message';
Add semicolon.
Perl
$x = 5; print $x
$x = 5; print $x;
Missing semicolon.
Perl
with open('config.json') as fp: data = fp.read()
with open('config.json') as fp: data = fp.read()
Correct.
Python
$result = 89; if ($result = 89) {{}}
$result = 89; if ($result == 89) {{}}
Use ==.
PHP
String temp = 'output';
String temp = "output";
Double quotes.
Java
x := 36
x := 36
Correct.
Go
if (item = 80) {}
if (item == 80) {}
Use ==.
Dart
class Child Base:
class Child(Base):
Inheritance uses parentheses.
Python
cin >> bar;
int bar; cin >> bar;
Declare variable.
C++
echo test test
echo 'test test'
Quote to prevent splitting.
Shell
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
WHERE age = '73'
WHERE age = 73
Don't quote integer.
SQL
if b = 35 then print('data') end
if b == 35 then print('data') end
Use ==.
Lua
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
local result = 49
local result = 49
Correct.
Lua
print 'hello'
print('hello')
print needs parentheses.
Python
[15, 58, 65
[15, 58, 65]
Close bracket.
Python
def test(): print('info')
def test(): print('info')
Indent function body.
Python
match val {{ 1 => {{}} }}
match val {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
int values[21]; values[21]=5;
int values[21]; if(21<21){{}} else values[21]=5;
Bounds check.
C++
value: info name: test,
value: info name: test
Remove comma.
YAML
<a href='https://demo.net' target='_blank'>
<a href='https://demo.net' target='_blank' rel='noopener'>
Add rel for security.
HTML
val temp = 'world'
val temp = "world"
Double quotes.
Kotlin
const int x; x = 5;
const int x = 5;
Const must be initialized.
C++
else print('info')
else: print('info')
Colon after else.
Python
DELETE FROM products WHERE age=16
DELETE FROM products WHERE age=16;
Add semicolon.
SQL
if (y = 38)
if (y == 38)
Use ==.
Scala
name: value age: 74
name: value age: 74
Correct.
YAML
if foo = 46
if foo == 46
Use ==.
Ruby
for bar in range(51) print(bar)
for bar in range(51): print(bar)
Colon after for.
Python
re.sqrt(42)
import re re.sqrt(42)
Import module first.
Python
// comment
/* comment */
Use /* */.
CSS
function render() {{ return {{key:'message'}} }}
function render() {{ return {{key:'message'}}; }}
Return object on same line.
JavaScript