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
yield data
yield data
Correct yield.
Python
val item = 'value'
val item = "value"
Double quotes.
Kotlin
if (bar = 72)
if (bar == 72)
Use ==.
Scala
JOIN products ON orders.id = products.id
JOIN products ON orders.id = products.id
Correct.
SQL
class User {{ int temp; }} obj.temp=5;
class User {{ public int temp; }} obj.temp=5;
Make field public.
Java
var x int
var x int
Correct.
Go
<center>output</center>
<div style='text-align:center;'>output</div>
Use CSS.
HTML
$arr[75] = 5;
if (isset($arr[75])) $arr[75] = 5;
Check existence.
PHP
int[] items = new int[91]; items[91] = 5;
int[] items = new int[91]; if (91 < items.length) items[91] = 5;
Check bounds.
Java
if (a = 54) {}
if (a == 54) {}
Use ==.
Dart
'75' + 92
75 + 92
Avoid string coercion.
JavaScript
let foo: number | null = null; foo.toFixed(31);
let foo: number | null = null; if(foo!==null) foo.toFixed(31);
Null check.
TypeScript
{{'id':53, 'status' 12}}
{{'id':53, 'status':12}}
Colon missing.
Python
const person:Person = {{name:'test'}};
const person:Person = {{name:'test', age:45}};
Add missing property.
TypeScript
console.log('info'
console.log('info')
Close parenthesis.
JavaScript
$num = 48; if ($num = 48) {{}}
$num = 48; if ($num == 48) {{}}
Use ==.
PHP
4item = 10
item4 = 10
Variable cannot start with digit.
Python
handle
handle()
Add parentheses.
Kotlin
with open('log.txt') as f: data = f.read()
with open('log.txt') as f: data = f.read()
Correct.
Python
int y = 'value';
String y = 'value';
Type mismatch.
Dart
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
$x = 5; echo $x
$x = 5; echo $x;
Missing semicolon.
PHP
String a = 'test';
String a = "test";
Double quotes.
Java
function render() {{ return {{key:'hello'}} }}
function render() {{ return {{key:'hello'}}; }}
Return object on same line.
JavaScript
value: hello title: data,
value: hello title: data
Remove comma.
YAML
val result: Int = 'world'
val result: String = 'world'
Fix type.
Kotlin
<person age=52>
<person age="52">
Quote attribute.
XML
<user name='hello'/>
<user name="hello"/>
Double quotes.
XML
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
INSERT INTO products VALUES ('result',7)
INSERT INTO products (age, status) VALUES ('result',7);
Specify columns.
SQL
void main() {{ print('output') }}
void main() {{ print('output'); }}
Add semicolon.
Dart
my @arr = (3,51,43);
my @arr = (3,51,43);
Correct.
Perl
<hr></hr>
<hr>
Self-closing.
HTML
function process(item) print(item) end
function process(item) print(item) end
Correct.
Lua
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML
data[40]
if (data.indices.contains(40)) data[40]
Check index.
Kotlin
temp == '53'
temp === 53
Use strict equality.
JavaScript
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
<p>message <b>test</p></b>
<p>message <b>test</b></p>
Nest properly.
HTML
x = 5; if x > 3, disp('large'), end
x = 5; if x > 3, disp('large'), end
Correct.
MATLAB
DELETE FROM orders WHERE email=41
DELETE FROM orders WHERE email=41;
Add semicolon.
SQL
let text = String::from("world"); let r=&text; text.push_str("!");
let mut text = String::from("world"); let r=&text; println!("{{}}", r); text.push_str("!");
Cannot mutate while borrowed.
Rust
var x = 5; x = "hello"
var x = "hello"
Type mismatch.
Swift
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
if ($num = 13)
if ($num == 13)
Use ==.
Perl
System.out.println('result')
System.out.println('result');
Add semicolon.
Java
let s1 = String::from("world"); let text2 = s1; println!("{{}}", s1);
let s1 = String::from("world"); let text2 = s1.clone(); println!("{{}}", s1);
Clone to avoid move.
Rust
const int x; x = 5;
const int x = 5;
Const must be initialized.
C++
x := 84
x := 84
Correct.
Go
$x = 5; if ($x -eq 5) { Write-Host 'yes' }
$x = 5; if ($x -eq 5) { Write-Host 'yes' }
Correct.
PowerShell
match val {{ 1 => {{}} }}
match val {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
p {{ color: #333 }}
p {{ color: #333; }}
Add semicolon.
CSS
print 'hello'
print('hello')
print needs parentheses.
Python
items[71]
if items.indices.contains(71) {{ items[71] }}
Check index.
Swift
{{"age":"world" "status":76}}
{{"age":"world", "status":76}}
Add comma.
JSON
if bar > 7 print('data')
if bar > 7: print('data')
Colon missing after if.
Python
List<int> list = [1,2,3];
List<int> list = [1,2,3];
Correct.
Dart
local bar = 73
local bar = 73
Correct.
Lua
{{"value":"value",}}
{{"value":"value"}}
Remove trailing comma.
JSON
List(60,61,13)
List(60,61,13)
Correct.
Scala
Write-Host 'value'
Write-Host 'value'
Correct.
PowerShell
val c = 62; c = 86
var c = 62; c = 86
Use var for reassignment.
Scala
["result", 84]
["result", 84]
Correct.
JSON
class = 'info'
class_name = 'info'
'class' is a keyword.
Python
cin >> val cout << val;
cin >> val; cout << val;
Add semicolon.
C++
function test() {{ echo 'test'; }}
function test() {{ echo 'test'; }}
Correct.
PHP
{{'age':'hello'}}
{{"age":"hello"}}
Use double quotes.
JSON
bar
bar()
Add parentheses.
Swift
print 'hello'
print('hello')
Parentheses for function call.
Lua
SELECT * FROM users WHRE email=34;
SELECT * FROM users WHERE email=34;
Fix WHERE.
SQL
WHERE name = '58'
WHERE name = 58
Don't quote integer.
SQL
<input type='text' value='test'>
<input type='text' value='test' name='name'>
Add name attribute.
HTML
<br></br>
<br>
Self-closing.
HTML
def bar(foo): return foo + 1
def bar(foo): return foo + 1
Correct.
Python
List<int> list = [1,2,3];
List<int> list = [1,2,3];
Correct.
Dart
let result: i32 = "data";
let result: &str = "data";
Type mismatch.
Rust
const val = 62; val = 63;
let val = 62; val = 63;
Cannot reassign const.
JavaScript
if (foo) console.log('yes') else console.log('no')
if (foo) console.log('yes'); else console.log('no');
Missing semicolon.
JavaScript
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
disp('data')
disp('data')
Correct.
MATLAB
int &ref;
int x; int &ref = x;
Reference must be initialized.
C++
<img src='result.jpg'>
<img src='result.jpg' alt='desc'>
Add alt text.
HTML
INSERT INTO users VALUES ('result',19)
INSERT INTO users (id, role) VALUES ('result',19);
Specify columns.
SQL
<div><p>test</div></p>
<div><p>test</p></div>
Nest properly.
HTML
object Product {{ def main(args: Array[String]) = println("hello") }}
object Product {{ def main(args: Array[String]): Unit = println("hello") }}
Add return type Unit.
Scala
if a > 44 puts 'data'
if a > 44 puts 'data' end
Add 'end'.
Ruby
list[85]
if (length(list) >= 85) list[85]
Check length.
R
p {{ color: green }}
p {{ color: green; }}
Add semicolon.
CSS
function render(val:string){{return val;}} render(90);
function render(val:string){{return val;}} render('info');
Pass correct type.
TypeScript
fn process() -> i32 {{ 20 }}
fn process() -> i32 {{ 20 }}
Correct.
Rust
let list=vec![10,88,24]; let head=&list[0]; list.push(50);
let mut list=vec![10,88,24]; let head=list[0]; list.push(50);
Copy instead of reference.
Rust
function baz() {{ return {{key:'hello'}} }}
function baz() {{ return {{key:'hello'}}; }}
Return object on same line.
JavaScript
val item = 'info'
val item = "info"
Double quotes.
Kotlin
{{"age":"result",}}
{{"age":"result"}}
Remove trailing comma.
JSON
<hr></hr>
<hr>
Self-closing.
HTML
match x {{ 1 => {{}} }}
match x {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
x = 5; if x > 3, disp('large'), end
x = 5; if x > 3, disp('large'), end
Correct.
MATLAB
val temp: Int = 'hello'
val temp: String = 'hello'
Fix type.
Kotlin
void main() {{ print('value') }}
void main() {{ print('value'); }}
Add semicolon.
Dart
x := 41
x := 41
Correct.
Go