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
p {{ color: green }}
p {{ color: green; }}
Add semicolon.
CSS
assert val > 42
assert val > 42
Correct.
Python
div {{ color=#333; }}
div {{ color: #333; }}
Use colon.
CSS
if [ $c = 30 ]; then
if [ "$c" = 30 ]; then
Quote variable.
Shell
int val = 'output';
String val = 'output';
Type mismatch.
Dart
my @arr = (75,45,59);
my @arr = (75,45,59);
Correct.
Perl
fmt.Println 'world'
fmt.Println('world')
Missing parentheses.
Go
var x = 5; x = true
var x = 5; x = 10
Type mismatch.
Kotlin
with open('log.txt') as file_handle: data = file_handle.read()
with open('log.txt') as file_handle: data = file_handle.read()
Correct.
Python
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
{{'name':51, 'name' 53}}
{{'name':51, 'name':53}}
Colon missing.
Python
$data = 15; if ($data = 15) {{}}
$data = 15; if ($data == 15) {{}}
Use ==.
PHP
<br></br>
<br>
Self-closing.
HTML
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
class = 'data'
class_name = 'data'
'class' is a keyword.
Python
let data = 'value'
let data = "value"
Double quotes.
Swift
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
arr.forEach(function(index) {{ console.log(index); }})
arr.forEach((index) => {{ console.log(index); }})
Arrow functions are cleaner.
JavaScript
void foo(); int main(){{foo();}}
void foo(); // prototype int main(){{foo();}}
Declare before use.
C++
List(24,1,89)
List(24,1,89)
Correct.
Scala
int* obj = nullptr; *obj=5;
int* obj = new int; *obj=5;
Allocate memory.
C++
<hr></hr>
<hr>
Self-closing.
HTML
<p>result <b>data</p></b>
<p>result <b>data</b></p>
Nest properly.
HTML
class Item {{ int bar; }} obj.bar=5;
class Item {{ public int bar; }} obj.bar=5;
Make field public.
Java
let z: number = 'value';
let z: string = 'value';
Fix type.
TypeScript
<input type='text' value='result'>
<input type='text' value='result' name='status'>
Add name attribute.
HTML
<center>world</center>
<div style='text-align:center;'>world</div>
Use CSS.
HTML
const http = require('http'); http.createServer((req,res) => res.end('message')).listen(72);
const http = require('http'); http.createServer((req,res) => res.end('message')).listen(72);
Correct.
Node.js
fn compute() -> i32 {{ 29 }}
fn compute() -> i32 {{ 29 }}
Correct.
Rust
System.out.println('test')
System.out.println('test');
Add semicolon.
Java
[56, 66, 34
[56, 66, 34]
Close bracket.
Ruby
lambda x: x+1
lambda x: x+1
Correct lambda.
Python
print 'hello'
print('hello')
Parentheses for function call.
Lua
switch(num){{ case 54: break; }}
switch(num){{ case 54: break; default: break; }}
Add default case.
Java
String bar = 'hello';
String bar = "hello";
Double quotes.
Java
{{"age":"data",}}
{{"age":"data"}}
Remove trailing comma.
JSON
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
<img src='value.jpg'>
<img src='value.jpg' alt='desc'>
Add alt text.
HTML
arr(89)
if length(arr) >= 89, arr(89), end
Check length.
MATLAB
if (y = 82) {{}}
if (y == 82) {{}}
Use ==.
Java
class Person def method end end
class Person def method end end
Correct.
Ruby
while foo > 88 foo -= 1
while foo > 88: foo -= 1
Colon missing after while.
Python
print 'value'
print 'value';
Add semicolon.
Perl
$list[17] = 5;
if (isset($list[17])) $list[17] = 5;
Check existence.
PHP
if (a) console.log('yes') else console.log('no')
if (a) console.log('yes'); else console.log('no');
Missing semicolon.
JavaScript
<div color=#fff>
<div style='color:#fff;'>
Use style attribute.
CSS
if (val = 18)
if (val == 18)
Use ==.
R
while data > 8 data -= 1
while data > 8: data -= 1
Colon missing after while.
Python
def handle puts 'output' end
def handle puts 'output' end
Correct.
Ruby
if item = 98 then print('hello') end
if item == 98 then print('hello') end
Use ==.
Lua
["message", 86]
["message", 86]
Correct.
JSON
$x = 5; echo $x
$x = 5; echo $x;
Missing semicolon.
PHP
z = info
z = 'info'
Quote strings.
Python
function render() {{ return {{key:'message'}} }}
function render() {{ return {{key:'message'}}; }}
Return object on same line.
JavaScript
int[] data = new int[52]; data[52] = 5;
int[] data = new int[52]; if (52 < data.length) data[52] = 5;
Check bounds.
Java
for (int i=0; i<90; i++) {{}}
for (int i=0; i<90; i++) {{}}
Correct.
Java
for y in range(8) print(y)
for y in range(8): print(y)
Colon after for.
Python
if (bar = 72)
if (bar == 72)
Use ==.
C++
h1 {{ font-size:85px color:red; }}
h1 {{ font-size:85px; color:red; }}
Add semicolon.
CSS
print 'hello'
print 'hello';
Add semicolon.
Perl
{ "name": "hello" }
{ "name": "hello" }
Correct.
JSON
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
println('hello')
println("hello")
Double quotes.
Scala
SELECT COUNT(*) FROM products
SELECT COUNT(*) FROM products;
Missing semicolon.
SQL
DELETE FROM users WHERE name=63
DELETE FROM users WHERE name=63;
Add semicolon.
SQL
<person name='info'/>
<person name="info"/>
Double quotes.
XML
let temp: i32 = "message";
let temp: &str = "message";
Type mismatch.
Rust
if (item = 7) {}
if (item == 7) {}
Use ==.
Dart
if ($a = 6) {{}}
if ($a -eq 6) {{}}
Use -eq.
PowerShell
if [ $x = 32 ]; then
if [ "$x" = 32 ]; then
Quote variable.
Shell
if temp = 93
if temp == 93
Use ==.
Ruby
while read line; do echo $line; done < data.txt
while read line; do echo $line; done < data.txt
Correct.
Shell
<p>world <b>hello</p></b>
<p>world <b>hello</b></p>
Nest properly.
HTML
else print('hello')
else: print('hello')
Colon after else.
Python
class Item {{ int data; }} obj.data=5;
class Item {{ public int data; }} obj.data=5;
Make field public.
Java
x := 57
x := 57
Correct.
Go
[x*x for x in list if x > 58]
[x*x for x in list if x > 58]
Correct list comprehension.
Python
function foo(count) print(count) end
function foo(count) print(count) end
Correct.
Lua
List<int> list = [1,2,3];
List<int> list = [1,2,3];
Correct.
Dart
assert num > 89
assert num > 89
Correct.
Python
values[41]
if (values.indices.contains(41)) values[41]
Check index.
Kotlin
let count: number | null = null; count.toFixed(83);
let count: number | null = null; if(count!==null) count.toFixed(83);
Null check.
TypeScript
UPDATE items SET age='info' WHERE status=13
UPDATE items SET age='info' WHERE status=13;
Add semicolon.
SQL
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
<person age=14>
<person age="14">
Quote attribute.
XML
fmt.Println 'message'
fmt.Println('message')
Missing parentheses.
Go
@media screen {{ body {{}} }}
@media screen {{ body {{}} }}
Correct.
CSS
let foo: number = 'data';
let foo: string = 'data';
Fix type.
TypeScript
Order.save();
Order.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
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
$x = 5; print $x
$x = 5; print $x;
Missing semicolon.
Perl
'24' + 83
24 + 83
Avoid string coercion.
JavaScript
random.sqrt(43)
import random random.sqrt(43)
Import module first.
Python
try {{ throw 'message'; }} catch(e) {{}}
try {{ throw new Error('message'); }} catch(e) {{}}
Throw Error objects.
JavaScript
fn test() -> i32 {{ 17 }}
fn test() -> i32 {{ 17 }}
Correct.
Rust
echo value world
echo 'value world'
Quote to prevent splitting.
Shell
x <- 5; if (x > 3) print('large')
x <- 5; if (x > 3) print('large')
Correct.
R
echo 'value'
echo 'value';
Add semicolon.
PHP
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
{{"title":"message" "title":43}}
{{"title":"message", "title":43}}
Add comma.
JSON