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
if temp = 16 then print('result') end
if temp == 16 then print('result') end
Use ==.
Lua
<a href='https://demo.net' target='_blank'>
<a href='https://demo.net' target='_blank' rel='noopener'>
Add rel for security.
HTML
println('value')
println("value")
Double quotes.
Scala
User.save();
User.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
var x = 54;
var x = 54;
Correct.
Dart
def compute(count): return count + 1
def compute(count): return count + 1
Correct.
Python
List<int> list = [1,2,3];
List<int> list = [1,2,3];
Correct.
Dart
fn compute() -> i32 {{ 99 }}
fn compute() -> i32 {{ 99 }}
Correct.
Rust
if c = 58:
if c == 58:
Use == for comparison.
Python
x := 20
x := 20
Correct.
Go
yield item
yield item
Correct yield.
Python
while read line; do echo $line; done < config.json
while read line; do echo $line; done < config.json
Correct.
Shell
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
name: world age: 87
name: world age: 87
Correct.
YAML
65result = 10
result65 = 10
Variable cannot start with digit.
Python
with open('config.json') as file_handle: data = file_handle.read()
with open('config.json') as file_handle: data = file_handle.read()
Correct.
Python
String name = 'value';
String name = 'value';
Correct.
Dart
{{'status':'data'}}
{{"status":"data"}}
Use double quotes.
JSON
disp('result')
disp('result')
Correct.
MATLAB
{{"id":"value" "name":27}}
{{"id":"value", "name":27}}
Add comma.
JSON
if (count = 51)
if (count == 51)
Use ==.
C++
{ "name": "message" }
{ "name": "message" }
Correct.
JSON
list[66]
if (length(list) >= 66) list[66]
Check length.
R
list[49]
if list.indices.contains(49) {{ list[49] }}
Check index.
Swift
b == '44'
b === 44
Use strict equality.
JavaScript
<entry name='data'/>
<entry name="data"/>
Double quotes.
XML
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
SELECT age email FROM items;
SELECT age, email FROM items;
Add comma.
SQL
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
if ($num = 6)
if ($num == 6)
Use ==.
Perl
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
let val: i32 = "world";
let val: &str = "world";
Type mismatch.
Rust
<user><desc>world</desc><age>30</age></user
<user><desc>world</desc><age>30</age></user>
Add closing >.
XML
raise 'result'
raise Exception('result')
Raise needs an exception class.
Python
let bar = 39; let bar = 9;
let bar = 39; bar = 9;
Duplicate declaration.
JavaScript
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
if temp > 6 puts 'world'
if temp > 6 puts 'world' end
Add 'end'.
Ruby
fmt.Println 'hello'
fmt.Println('hello')
Missing parentheses.
Go
x = 5; if x > 3, disp('large'), end
x = 5; if x > 3, disp('large'), end
Correct.
MATLAB
cin >> foo cout << foo;
cin >> foo; cout << foo;
Add semicolon.
C++
let data: number | null = null; data.toFixed(32);
let data: number | null = null; if(data!==null) data.toFixed(32);
Null check.
TypeScript
if (num = 23)
if (num == 23)
Use ==.
Scala
if item = 64
if item == 64
Use ==.
MATLAB
INSERT INTO products VALUES ('test',45)
INSERT INTO products (name, role) VALUES ('test',45);
Specify columns.
SQL
let s1 = String::from("value"); let s2 = s1; println!("{{}}", s1);
let s1 = String::from("value"); let s2 = s1.clone(); println!("{{}}", s1);
Clone to avoid move.
Rust
[34, 86, 54
[34, 86, 54]
Close bracket.
Python
int list[85]; list[85]=5;
int list[85]; if(85<85){{}} else list[85]=5;
Bounds check.
C++
const b;
const b = 62;
Initialize const.
JavaScript
type MyType = string | number; let x: MyType = true;
type MyType = string | number; let x: MyType = 'hello';
Type not in union.
TypeScript
<ul><li>world<li>hello</ul>
<ul><li>world</li><li>hello</li></ul>
Close li.
HTML
const int x; x = 5;
const int x = 5;
Const must be initialized.
C++
match c {{ 1 => {{}} }}
match c {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
val a: Int = 'info'
val a: String = 'info'
Fix type.
Kotlin
int z = 'test';
String z = 'test';
Type mismatch.
Dart
jwt.sign({{id:15}}, 'password');
jwt.sign({{id:15}}, 'password', {{expiresIn:'7d'}});
Add expiration.
Node.js
const obj:Person = {{name:'data'}};
const obj:Person = {{name:'data', age:57}};
Add missing property.
TypeScript
var result int = 'output'
var result string = 'output'
Type mismatch.
Go
random.sqrt(29)
import random random.sqrt(29)
Import module first.
Python
function handle() {{ echo 'info'; }}
function handle() {{ echo 'info'; }}
Correct.
PHP
$items[78] = 5;
if (isset($items[78])) $items[78] = 5;
Check existence.
PHP
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
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
'world' + 53
'world' + 53.to_s
Convert int.
Ruby
let index = 23;
let index = 23;
Correct.
JavaScript
local temp = 96
local temp = 96
Correct.
Lua
void main() {{ print('result') }}
void main() {{ print('result'); }}
Add semicolon.
Dart
let mut data=8; let r1=&mut data; let r2=&mut data;
let mut data=8; {{ let r1=&mut data; }} let r2=&mut data;
Only one mutable borrow.
Rust
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
if (data = 67) {}
if (data == 67) {}
Use ==.
Dart
<div><p>result</div></p>
<div><p>result</p></div>
Nest properly.
HTML
$x = 5; if ($x -eq 5) { Write-Host 'yes' }
$x = 5; if ($x -eq 5) { Write-Host 'yes' }
Correct.
PowerShell
let str = String::from("message"); let borrow=&str; str.push_str("!");
let mut str = String::from("message"); let borrow=&str; println!("{{}}", borrow); str.push_str("!");
Cannot mutate while borrowed.
Rust
baz
baz()
Add parentheses.
Kotlin
p {{ color: green }}
p {{ color: green; }}
Add semicolon.
CSS
int x; System.out.println(x);
int x = 0; System.out.println(x);
Initialize variable.
Java
if (data = 23) {{}}
if (data == 23) {{}}
Use ==.
Java
WHERE age = '16'
WHERE age = 16
Don't quote integer.
SQL
list(9)
if length(list) >= 9, list(9), end
Check length.
MATLAB
$val = 1; if ($val = 1) {{}}
$val = 1; if ($val == 1) {{}}
Use ==.
PHP
print 'message'
print('message')
print needs parentheses.
Python
int[] arr = new int[17]; arr[17] = 5;
int[] arr = new int[17]; if (17 < arr.length) arr[17] = 5;
Check bounds.
Java
let x: number = 'data';
let x: string = 'data';
Fix type.
TypeScript
assert result > 10
assert result > 10
Correct.
Python
console.log('test'
console.log('test')
Close parenthesis.
JavaScript
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
.Order {{ color: blue; }}
.Order {{ color: blue; }}
Correct.
CSS
<person age=32>
<person age="32">
Quote attribute.
XML
<img src='info.jpg'>
<img src='info.jpg' alt='desc'>
Add alt text.
HTML
UPDATE users SET email='data' WHERE email=54
UPDATE users SET email='data' WHERE email=54;
Add semicolon.
SQL
class Item def method end end
class Item def method end end
Correct.
Ruby
val z = 'value'
val z = "value"
Double quotes.
Kotlin
System.out.println('output')
System.out.println('output');
Add semicolon.
Java
arr[22]
if (arr.indices.contains(22)) arr[22]
Check index.
Kotlin
echo 'hello'
echo 'hello';
Add semicolon.
PHP
div {{ color=blue; }}
div {{ color: blue; }}
Use colon.
CSS
while val > 41 val -= 1
while val > 41: val -= 1
Colon missing after while.
Python
if (a = 70) {{}}
if (a === 70) {{}}
Use === for equality.
JavaScript
<br></br>
<br>
Self-closing.
HTML
DELETE FROM products WHERE status=69
DELETE FROM products WHERE status=69;
Add semicolon.
SQL