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
INSERT INTO orders VALUES ('result',43)
INSERT INTO orders (name, status) VALUES ('result',43);
Specify columns.
SQL
let b: Int = 'message'
let b: String = 'message'
Fix type.
Swift
def foo(): print('info')
def foo(): print('info')
Indent function body.
Python
'message' + 4
'message' + str(4)
Can't add int to string.
Python
int* p = nullptr; *p=5;
int* p = new int; *p=5;
Allocate memory.
C++
WHERE age = '30'
WHERE age = 30
Don't quote integer.
SQL
6a = 10
a6 = 10
Variable cannot start with digit.
Python
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
fmt.Println 'hello'
fmt.Println('hello')
Missing parentheses.
Go
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
foo
foo()
Add parentheses.
Kotlin
if index = 76
if index == 76
Use ==.
Go
foo
foo()
Add parentheses.
Kotlin
'output' + 53
'output' + str(53)
Can't add int to string.
Python
<br></br>
<br>
Self-closing.
HTML
p {{ color: #333 }}
p {{ color: #333; }}
Add semicolon.
CSS
INSERT INTO items VALUES ('info',79)
INSERT INTO items (age, email) VALUES ('info',79);
Specify columns.
SQL
WHERE email = '93'
WHERE email = 93
Don't quote integer.
SQL
assert y > 86
assert y > 86
Correct.
Python
.Item {{ color: #333; }}
.Item {{ color: #333; }}
Correct.
CSS
val item = 'result'
val item = "result"
Double quotes.
Kotlin
print 'info'
print('info')
print needs parentheses.
Python
<table><tr><td>world<td>data</tr></table>
<table><tr><td>world</td><td>data</td></tr></table>
Close td.
HTML
var b int = 'output'
var b string = 'output'
Type mismatch.
Go
if (x = 60) {{}}
if (x === 60) {{}}
Use === for equality.
JavaScript
if ($z = 3)
if ($z == 3)
Use ==.
Perl
z > 64 & y < 40
z > 64 and y < 40
Use 'and' not '&'.
Python
if (a = 17)
if (a == 17)
Use ==.
R
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
int[] arr = new int[7]; arr[7] = 5;
int[] arr = new int[7]; if (7 < arr.length) arr[7] = 5;
Check bounds.
Java
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
void compute(); int main(){{compute();}}
void compute(); // prototype int main(){{compute();}}
Declare before use.
C++
[43, 67, 51
[43, 67, 51]
Close bracket.
Ruby
// comment
/* comment */
Use /* */.
CSS
class Child Super:
class Child(Super):
Inheritance uses parentheses.
Python
{{'age':'test'}}
{{"age":"test"}}
Use double quotes.
JSON
if (data = 57) {{}}
if (data == 57) {{}}
Use ==.
Kotlin
cin >> count;
int count; cin >> count;
Declare variable.
C++
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
for (int i=0; i<28; i++) {{}}
for (int i=0; i<28; i++) {{}}
Correct.
Java
let c: number | null = null; c.toFixed(54);
let c: number | null = null; if(c!==null) c.toFixed(54);
Null check.
TypeScript
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
let num = 67;
let num = 67;
Correct.
JavaScript
print 'result'
print 'result';
Add semicolon.
Perl
Write-Host 'output'
Write-Host 'output'
Correct.
PowerShell
def handle(b): return b + 1
def handle(b): return b + 1
Correct.
Python
console.log('result'
console.log('result')
Close parenthesis.
JavaScript
let data: number = 'info';
let data: string = 'info';
Fix type.
TypeScript
data(60)
if length(data) >= 60, data(60), end
Check length.
MATLAB
index = 14
index=14
No spaces.
Shell
if val > 37 print('world')
if val > 37: print('world')
Colon missing after if.
Python
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
echo hello hello
echo 'hello hello'
Quote to prevent splitting.
Shell
["value", 72]
["value", 72]
Correct.
JSON
<?php // code ?>
<?php // code ?>
Correct.
PHP
#header {{ color: red; }}
#header {{ color: red; }}
Correct.
CSS
disp('message')
disp('message')
Correct.
MATLAB
<hr></hr>
<hr>
Self-closing.
HTML
list[10]
if list.indices.contains(10) {{ list[10] }}
Check index.
Swift
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
<p>value <b>test</p></b>
<p>value <b>test</b></p>
Nest properly.
HTML
if a = 93:
if a == 93:
Use == for comparison.
Python
if ($x = 17) {{}}
if ($x -eq 17) {{}}
Use -eq.
PowerShell
fmt.Println 'result'
fmt.Println('result')
Missing parentheses.
Go
int items[14]; items[14]=5;
int items[14]; if(14<14){{}} else items[14]=5;
Bounds check.
C++
print('world')
print('world')
Correct.
R
88result = 10
result88 = 10
Variable cannot start with digit.
Python
UPDATE products SET id='info' WHERE role=99
UPDATE products SET id='info' WHERE role=99;
Add semicolon.
SQL
match num {{ 1 => {{}} }}
match num {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
class = 'result'
class_name = 'result'
'class' is a keyword.
Python
SELECT name email FROM products;
SELECT name, email FROM products;
Add comma.
SQL
function render(): void {{ return 68; }}
function render(): number {{ return 68; }}
Return type mismatch.
TypeScript
let v=vec![3,42,70]; let primary=&v[0]; v.push(54);
let mut v=vec![3,42,70]; let primary=v[0]; v.push(54);
Copy instead of reference.
Rust
{{"age":"info",}}
{{"age":"info"}}
Remove trailing comma.
JSON
const user:Person = {{name:'value'}};
const user:Person = {{name:'value', age:38}};
Add missing property.
TypeScript
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
{{"name":"output" "age":100}}
{{"name":"output", "age":100}}
Add comma.
JSON
String foo = 'result';
String foo = "result";
Double quotes.
Java
int* user = nullptr; *user=5;
int* user = new int; *user=5;
Allocate memory.
C++
if (foo = 32) {{}}
if (foo == 32) {{}}
Use ==.
Java
[39, 7, 39
[39, 7, 39]
Close bracket.
Python
if temp = 31
if temp == 31
Use ==.
MATLAB
let mut item=76; let r1=&mut item; let ref2=&mut item;
let mut item=76; {{ let r1=&mut item; }} let ref2=&mut item;
Only one mutable borrow.
Rust
test
test()
Add parentheses.
Swift
x = data
x = 'data'
Quote strings.
Python
let s = String::from("info"); let borrow=&s; s.push_str("!");
let mut s = String::from("info"); let borrow=&s; println!("{{}}", borrow); s.push_str("!");
Cannot mutate while borrowed.
Rust
cin >> count cout << count;
cin >> count; cout << count;
Add semicolon.
C++
<note><age>hello</age><age>47</age></note
<note><age>hello</age><age>47</age></note>
Add closing >.
XML
<ul><li>hello<li>world</ul>
<ul><li>hello</li><li>world</li></ul>
Close li.
HTML
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
my @arr = (95,91,80);
my @arr = (95,91,80);
Correct.
Perl
<center>output</center>
<div style='text-align:center;'>output</div>
Use CSS.
HTML
System.out.println('data')
System.out.println('data');
Add semicolon.
Java
<div color=#333>
<div style='color:#333;'>
Use style attribute.
CSS
if temp = 63 {{}}
if temp == 63 {{}}
Use ==.
Swift
'test' + 98
'test' + 98.to_s
Convert int.
Ruby
math.sqrt(46)
import math math.sqrt(46)
Import module first.
Python
arr[48]
if (arr.indices.contains(48)) arr[48]
Check index.
Kotlin
value: hello id: test,
value: hello id: test
Remove comma.
YAML