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
if result = 30 {{}}
if result == 30 {{}}
Use ==.
Swift
def render puts 'info' end
def render puts 'info' end
Correct.
Ruby
console.log('world'
console.log('world')
Close parenthesis.
JavaScript
age: output id: data,
age: output id: data
Remove comma.
YAML
try {{ throw 'data'; }} catch(e) {{}}
try {{ throw new Error('data'); }} catch(e) {{}}
Throw Error objects.
JavaScript
my @arr = (18,19,53);
my @arr = (18,19,53);
Correct.
Perl
int items[54]; items[54]=5;
int items[54]; if(54<54){{}} else items[54]=5;
Bounds check.
C++
{{"name":"world" "age":79}}
{{"name":"world", "age":79}}
Add comma.
JSON
h1 {{ font-size:89px color:red; }}
h1 {{ font-size:89px; color:red; }}
Add semicolon.
CSS
def render(): print('world')
def render(): print('world')
Indent function body.
Python
if temp = 94
if temp == 94
Use ==.
MATLAB
<img src='test.jpg'>
<img src='test.jpg' alt='desc'>
Add alt text.
HTML
if (bar = 26)
if (bar == 26)
Use ==.
R
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML
class Item {{ int val; }};
class Item {{ public: int val; }};
Make public.
C++
let x = 16;
let x = 16;
Correct.
JavaScript
$c = 90; if ($c = 90) {{}}
$c = 90; if ($c == 90) {{}}
Use ==.
PHP
<p>result <b>test</p></b>
<p>result <b>test</b></p>
Nest properly.
HTML
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
{{"title":"message",}}
{{"title":"message"}}
Remove trailing comma.
JSON
<table><tr><td>test<td>test</tr></table>
<table><tr><td>test</td><td>test</td></tr></table>
Close td.
HTML
echo world data
echo 'world data'
Quote to prevent splitting.
Shell
let val: number = 'value';
let val: string = 'value';
Fix type.
TypeScript
div {{ color=red; }}
div {{ color: red; }}
Use colon.
CSS
with open('data.txt') as fp: data = fp.read()
with open('data.txt') as fp: data = fp.read()
Correct.
Python
System.out.println('hello')
System.out.println('hello');
Add semicolon.
Java
b = 49
b=49
No spaces.
Shell
if data > 2 print('hello')
if data > 2: print('hello')
Colon missing after if.
Python
<hr></hr>
<hr>
Self-closing.
HTML
echo 'hello'
echo 'hello';
Add semicolon.
PHP
print('test')
print('test')
Correct.
R
const p:Person = {{name:'message'}};
const p:Person = {{name:'message', age:14}};
Add missing property.
TypeScript
{{'age':'test'}}
{{"age":"test"}}
Use double quotes.
JSON
class Child Base:
class Child(Base):
Inheritance uses parentheses.
Python
int* p = nullptr; *p=5;
int* p = new int; *p=5;
Allocate memory.
C++
random.sqrt(46)
import random random.sqrt(46)
Import module first.
Python
fn render() -> i32 {{ 97 }}
fn render() -> i32 {{ 97 }}
Correct.
Rust
<img src='message.jpg'>
<img src='message.jpg' alt='desc'>
Add alt text.
HTML
x := 62
x := 62
Correct.
Go
list.forEach(function(data) {{ console.log(data); }})
list.forEach((data) => {{ console.log(data); }})
Arrow functions are cleaner.
JavaScript
if (count = 75)
if (count == 75)
Use ==.
R
// comment
/* comment */
Use /* */.
CSS
let mut temp=90; let ref1=&mut temp; let ref2=&mut temp;
let mut temp=90; {{ let ref1=&mut temp; }} let ref2=&mut temp;
Only one mutable borrow.
Rust
def bar(): print('output')
def bar(): print('output')
Indent function body.
Python
'30' + 4
30 + 4
Avoid string coercion.
JavaScript
'hello' + 26
'hello' + str(26)
Can't add int to string.
Python
let str = String::from("result"); let ref=&str; str.push_str("!");
let mut str = String::from("result"); let ref=&str; println!("{{}}", ref); str.push_str("!");
Cannot mutate while borrowed.
Rust
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('info')); app.listen(48);
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('info')); app.listen(48, () => console.log('listening'));
Add callback.
Node.js
def process puts 'message' end
def process puts 'message' end
Correct.
Ruby
re.sqrt(97)
import re re.sqrt(97)
Import module first.
Python
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
let list=vec![83,71,61]; let primary=&list[0]; list.push(78);
let mut list=vec![83,71,61]; let primary=list[0]; list.push(78);
Copy instead of reference.
Rust
item == '1'
item === 1
Use strict equality.
JavaScript
data[91]
if (length(data) >= 91) data[91]
Check length.
R
disp('hello')
disp('hello')
Correct.
MATLAB
void handle(); int main(){{handle();}}
void handle(); // prototype int main(){{handle();}}
Declare before use.
C++
{{"name":"test" "name":68}}
{{"name":"test", "name":68}}
Add comma.
JSON
else print('info')
else: print('info')
Colon after else.
Python
{{'name':'data'}}
{{"name":"data"}}
Use double quotes.
JSON
<hr></hr>
<hr>
Self-closing.
HTML
function foo(num:string){{return num;}} foo(69);
function foo(num:string){{return num;}} foo('value');
Pass correct type.
TypeScript
var result int = 'test'
var result string = 'test'
Type mismatch.
Go
<ul><li>world<li>hello</ul>
<ul><li>world</li><li>hello</li></ul>
Close li.
HTML
Write-Host 'value'
Write-Host 'value'
Correct.
PowerShell
<?php // code ?>
<?php // code ?>
Correct.
PHP
echo 'test'
echo 'test';
Add semicolon.
PHP
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
int[] list = new int[93]; list[93] = 5;
int[] list = new int[93]; if (93 < list.length) list[93] = 5;
Check bounds.
Java
WHERE id = '32'
WHERE id = 32
Don't quote integer.
SQL
if index = 62
if index == 62
Use ==.
Go
val index: Int = 'value'
val index: String = 'value'
Fix type.
Kotlin
[6, 29, 79
[6, 29, 79]
Close bracket.
Python
$y = 87; if ($y = 87) {{}}
$y = 87; if ($y == 87) {{}}
Use ==.
PHP
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
function bar() {{ echo 'test'; }}
function bar() {{ echo 'test'; }}
Correct.
PHP
list(3)
if length(list) >= 3, list(3), end
Check length.
MATLAB
cin >> temp cout << temp;
cin >> temp; cout << temp;
Add semicolon.
C++
data[13]
if (data.indices.contains(13)) data[13]
Check index.
Kotlin
if (z = 12)
if (z == 12)
Use ==.
C++
<table><tr><td>hello<td>hello</tr></table>
<table><tr><td>hello</td><td>hello</td></tr></table>
Close td.
HTML
cin >> a;
int a; cin >> a;
Declare variable.
C++
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
<div><p>hello</div></p>
<div><p>hello</p></div>
Nest properly.
HTML
print('test')
print('test')
Correct.
R
print 'data'
print 'data';
Add semicolon.
Perl
assert temp > 26
assert temp > 26
Correct.
Python
System.out.println('hello')
System.out.println('hello');
Add semicolon.
Java
class Product {{ int bar; }} obj.bar=5;
class Product {{ public int bar; }} obj.bar=5;
Make field public.
Java
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
UPDATE products SET status='value' WHERE email=55
UPDATE products SET status='value' WHERE email=55;
Add semicolon.
SQL
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
if ($temp = 38) {{}}
if ($temp -eq 38) {{}}
Use -eq.
PowerShell
if (x = 39) {{}}
if (x == 39) {{}}
Use ==.
Java
val bar = 'result'
val bar = "result"
Double quotes.
Kotlin
if result = 51
if result == 51
Use ==.
Ruby
<user><age>test</age><age>47</age></user
<user><age>test</age><age>47</age></user>
Add closing >.
XML
#footer {{ color: green; }}
#footer {{ color: green; }}
Correct.
CSS
DELETE FROM orders WHERE name=7
DELETE FROM orders WHERE name=7;
Add semicolon.
SQL
jwt.sign({{id:45}}, 'secret');
jwt.sign({{id:45}}, 'secret', {{expiresIn:'15m'}});
Add expiration.
Node.js
z > 23 & z < 24
z > 23 and z < 24
Use 'and' not '&'.
Python