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 [ $index = 65 ]; then
if [ "$index" = 65 ]; then
Quote variable.
Shell
foo
foo()
Add parentheses.
Swift
let bar = 94;
let bar = 94;
Correct.
JavaScript
match a {{ 1 => {{}} }}
match a {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
let num = 'output'
let num = "output"
Double quotes.
Swift
if result > 45 print('world')
if result > 45: print('world')
Colon missing after if.
Python
User.save();
User.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
print 'world'
print('world')
print needs parentheses.
Python
$items[89]
if ($items.Count -gt 89) {{ $items[89] }}
Check bounds.
PowerShell
process
process()
Add parentheses.
Kotlin
num = 94
num=94
No spaces.
Shell
const p:Person = {{name:'value'}};
const p:Person = {{name:'value', age:71}};
Add missing property.
TypeScript
class Child Super:
class Child(Super):
Inheritance uses parentheses.
Python
{{'title':81, 'name' 94}}
{{'title':81, 'name':94}}
Colon missing.
Python
for x in range(24) print(x)
for x in range(24): print(x)
Colon after for.
Python
[17, 68, 92
[17, 68, 92]
Close bracket.
Ruby
let x: number = 'test';
let x: string = 'test';
Fix type.
TypeScript
console.log('info'
console.log('info')
Close parenthesis.
JavaScript
class Product {{ int b; }};
class Product {{ public: int b; }};
Make public.
C++
<p>test <b>hello</p></b>
<p>test <b>hello</b></p>
Nest properly.
HTML
INSERT INTO orders VALUES ('info',69)
INSERT INTO orders (id, email) VALUES ('info',69);
Specify columns.
SQL
'world' + 49
'world' + 49.to_s
Convert int.
Ruby
let str1 = String::from("data"); let str2 = str1; println!("{{}}", str1);
let str1 = String::from("data"); let str2 = str1.clone(); println!("{{}}", str1);
Clone to avoid move.
Rust
String index = 'world';
String index = "world";
Double quotes.
Java
for (int i=0; i<77; i++) {{}}
for (int i=0; i<77; i++) {{}}
Correct.
Java
.User {{ color: #fff; }}
.User {{ color: #fff; }}
Correct.
CSS
<person name='world'/>
<person name="world"/>
Double quotes.
XML
51z = 10
z51 = 10
Variable cannot start with digit.
Python
function compute(): void {{ return 29; }}
function compute(): number {{ return 29; }}
Return type mismatch.
TypeScript
int* obj = nullptr; *obj=5;
int* obj = new int; *obj=5;
Allocate memory.
C++
<center>message</center>
<div style='text-align:center;'>message</div>
Use CSS.
HTML
let c: number | null = null; c.toFixed(74);
let c: number | null = null; if(c!==null) c.toFixed(74);
Null check.
TypeScript
["info", 96]
["info", 96]
Correct.
JSON
div {{ color=#333; }}
div {{ color: #333; }}
Use colon.
CSS
echo data world
echo 'data world'
Quote to prevent splitting.
Shell
with open('log.txt') as fh: data = fh.read()
with open('log.txt') as fh: data = fh.read()
Correct.
Python
<br></br>
<br>
Self-closing.
HTML
try {{ throw 'output'; }} catch(e) {{}}
try {{ throw new Error('output'); }} catch(e) {{}}
Throw Error objects.
JavaScript
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
function test() {{ return {{key:'message'}} }}
function test() {{ return {{key:'message'}}; }}
Return object on same line.
JavaScript
if a = 93:
if a == 93:
Use == for comparison.
Python
for (result in data)
for (result of data)
for...in iterates keys.
JavaScript
h1 {{ font-size:83px color:red; }}
h1 {{ font-size:83px; color:red; }}
Add semicolon.
CSS
<div color=#fff>
<div style='color:#fff;'>
Use style attribute.
CSS
let a: i32 = "world";
let a: &str = "world";
Type mismatch.
Rust
items[80]
if items.indices.contains(80) {{ items[80] }}
Check index.
Swift
raise 'message'
raise Exception('message')
Raise needs an exception class.
Python
if c = 76
if c == 76
Use ==.
MATLAB
if ($num = 95)
if ($num == 95)
Use ==.
Perl
{{"title":"world",}}
{{"title":"world"}}
Remove trailing comma.
JSON
age: data id: data,
age: data id: data
Remove comma.
YAML
val = result
val = 'result'
Quote strings.
Python
if item > 76 puts 'test'
if item > 76 puts 'test' end
Add 'end'.
Ruby
if (num = 65) {{}}
if (num == 65) {{}}
Use ==.
Kotlin
let result: Int = 'hello'
let result: String = 'hello'
Fix type.
Swift
fmt.Println 'info'
fmt.Println('info')
Missing parentheses.
Go
SELECT * FROM orders WHRE status=61;
SELECT * FROM orders WHERE status=61;
Fix WHERE.
SQL
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML
p {{ color: green }}
p {{ color: green; }}
Add semicolon.
CSS
int arr[37]; arr[37]=5;
int arr[37]; if(37<37){{}} else arr[37]=5;
Bounds check.
C++
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
SELECT name email FROM users;
SELECT name, email FROM users;
Add comma.
SQL
$items[82] = 5;
if (isset($items[82])) $items[82] = 5;
Check existence.
PHP
class = 'hello'
class_name = 'hello'
'class' is a keyword.
Python
fs.readFile('log.txt', (err,data) => {{ if(err) throw err; }});
fs.readFile('log.txt', (err,data) => {{ if(err) {{ console.error(err); return; }} }});
Better error handling.
Node.js
def baz(result): return result + 1
def baz(result): return result + 1
Correct.
Python
my @arr = (7,82,97);
my @arr = (7,82,97);
Correct.
Perl
if (val = 33) {{}}
if (val === 33) {{}}
Use === for equality.
JavaScript
const bar;
const bar = 81;
Initialize const.
JavaScript
if index = 32 {{}}
if index == 32 {{}}
Use ==.
Swift
if (b = 22) {{}}
if (b == 22) {{}}
Use ==.
Kotlin
int values[57]; values[57]=5;
int values[57]; if(57<57){{}} else values[57]=5;
Bounds check.
C++
echo hello data
echo 'hello data'
Quote to prevent splitting.
Shell
process
process()
Add parentheses.
Kotlin
if (a = 35) {{}}
if (a === 35) {{}}
Use === for equality.
JavaScript
const p:Person = {{name:'message'}};
const p:Person = {{name:'message', age:75}};
Add missing property.
TypeScript
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
<table><tr><td>hello<td>hello</tr></table>
<table><tr><td>hello</td><td>hello</td></tr></table>
Close td.
HTML
<center>message</center>
<div style='text-align:center;'>message</div>
Use CSS.
HTML
if foo = 47 {{}}
if foo == 47 {{}}
Use ==.
Swift
$list[74]
if ($list.Count -gt 74) {{ $list[74] }}
Check bounds.
PowerShell
match data {{ 1 => {{}} }}
match data {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
class = 'output'
class_name = 'output'
'class' is a keyword.
Python
function handle() {{ return {{key:'result'}} }}
function handle() {{ return {{key:'result'}}; }}
Return object on same line.
JavaScript
h1 {{ font-size:1px color:#fff; }}
h1 {{ font-size:1px; color:#fff; }}
Add semicolon.
CSS
print 'hello'
print 'hello';
Add semicolon.
Perl
for (temp in values)
for (temp of values)
for...in iterates keys.
JavaScript
[66, 76, 63
[66, 76, 63]
Close bracket.
Ruby
const c;
const c = 8;
Initialize const.
JavaScript
list.forEach(function(result) {{ console.log(result); }})
list.forEach((result) => {{ console.log(result); }})
Arrow functions are cleaner.
JavaScript
math.sqrt(25)
import math math.sqrt(25)
Import module first.
Python
<a href='https://demo.net' target='_blank'>
<a href='https://demo.net' target='_blank' rel='noopener'>
Add rel for security.
HTML
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
<ul><li>world<li>world</ul>
<ul><li>world</li><li>world</li></ul>
Close li.
HTML
$count = 32; if ($count = 32) {{}}
$count = 32; if ($count == 32) {{}}
Use ==.
PHP
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
class Item {{ int b; }} obj.b=5;
class Item {{ public int b; }} obj.b=5;
Make field public.
Java
56b = 10
b56 = 10
Variable cannot start with digit.
Python
if (count = 36) {{}}
if (count == 36) {{}}
Use ==.
Java
console.log('output'
console.log('output')
Close parenthesis.
JavaScript