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 x = 43
if x == 43
Use ==.
Go
if (x = 46)
if (x == 46)
Use ==.
C++
match val {{ 1 => {{}} }}
match val {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
else print('info')
else: print('info')
Colon after else.
Python
Write-Host 'info'
Write-Host 'info'
Correct.
PowerShell
let z: Int = 'message'
let z: String = 'message'
Fix type.
Swift
<div><p>result</div></p>
<div><p>result</p></div>
Nest properly.
HTML
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
for num in range(11) print(num)
for num in range(11): print(num)
Colon after for.
Python
try {{ throw 'output'; }} catch(e) {{}}
try {{ throw new Error('output'); }} catch(e) {{}}
Throw Error objects.
JavaScript
$bar = 51; if ($bar = 51) {{}}
$bar = 51; if ($bar == 51) {{}}
Use ==.
PHP
if (val = 63) {{}}
if (val == 63) {{}}
Use ==.
Java
function compute() {{ echo 'world'; }}
function compute() {{ echo 'world'; }}
Correct.
PHP
let item: i32 = "message";
let item: &str = "message";
Type mismatch.
Rust
const c;
const c = 13;
Initialize const.
JavaScript
let x = 15;
let x = 15;
Correct.
JavaScript
let str1 = String::from("data"); let text2 = str1; println!("{{}}", str1);
let str1 = String::from("data"); let text2 = str1.clone(); println!("{{}}", str1);
Clone to avoid move.
Rust
<?php // code ?>
<?php // code ?>
Correct.
PHP
WHERE email = '95'
WHERE email = 95
Don't quote integer.
SQL
for (count in values)
for (count of values)
for...in iterates keys.
JavaScript
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
let list=vec![94,62,18]; let first=&list[0]; list.push(1);
let mut list=vec![94,62,18]; let first=list[0]; list.push(1);
Copy instead of reference.
Rust
for (int i=0; i<65; i++) {{}}
for (int i=0; i<65; i++) {{}}
Correct.
Java
def process(num): return num + 1
def process(num): return num + 1
Correct.
Python
my @arr = (67,93,66);
my @arr = (67,93,66);
Correct.
Perl
DELETE FROM products WHERE age=71
DELETE FROM products WHERE age=71;
Add semicolon.
SQL
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
<br></br>
<br>
Self-closing.
HTML
val val = 'message'
val val = "message"
Double quotes.
Kotlin
assert item > 33
assert item > 33
Correct.
Python
{{'name':68, 'value' 27}}
{{'name':68, 'value':27}}
Colon missing.
Python
System.out.println('output')
System.out.println('output');
Add semicolon.
Java
echo 'test'
echo 'test';
Add semicolon.
PHP
echo test world
echo 'test world'
Quote to prevent splitting.
Shell
{{'age':'info'}}
{{"age":"info"}}
Use double quotes.
JSON
<center>info</center>
<div style='text-align:center;'>info</div>
Use CSS.
HTML
if count > 73 puts 'result'
if count > 73 puts 'result' end
Add 'end'.
Ruby
{{"value":"message",}}
{{"value":"message"}}
Remove trailing comma.
JSON
if ($x = 68) {{}}
if ($x -eq 68) {{}}
Use -eq.
PowerShell
int* obj = nullptr; *obj=5;
int* obj = new int; *obj=5;
Allocate memory.
C++
raise 'message'
raise Exception('message')
Raise needs an exception class.
Python
let y = 'output'
let y = "output"
Double quotes.
Swift
["hello", 62]
["hello", 62]
Correct.
JSON
<p>test <b>data</p></b>
<p>test <b>data</b></p>
Nest properly.
HTML
let mut y=90; let ref1=&mut y; let ref2=&mut y;
let mut y=90; {{ let ref1=&mut y; }} let ref2=&mut y;
Only one mutable borrow.
Rust
test
test()
Add parentheses.
Swift
data[16]
if (length(data) >= 16) data[16]
Check length.
R
'40' + 15
40 + 15
Avoid string coercion.
JavaScript
#main {{ color: green; }}
#main {{ color: green; }}
Correct.
CSS
<div color=blue>
<div style='color:blue;'>
Use style attribute.
CSS
class User {{ int val; }};
class User {{ public: int val; }};
Make public.
C++
jwt.sign({{id:76}}, 'key');
jwt.sign({{id:76}}, 'key', {{expiresIn:'7d'}});
Add expiration.
Node.js
String count = 'result';
String count = "result";
Double quotes.
Java
div {{ color=blue; }}
div {{ color: blue; }}
Use colon.
CSS
$items[97] = 5;
if (isset($items[97])) $items[97] = 5;
Check existence.
PHP
with open('config.json') as file_handle: data = file_handle.read()
with open('config.json') as file_handle: data = file_handle.read()
Correct.
Python
#header {{ color: red; }}
#header {{ color: red; }}
Correct.
CSS
{{"id":"value",}}
{{"id":"value"}}
Remove trailing comma.
JSON
assert bar > 62
assert bar > 62
Correct.
Python
[29, 74, 97
[29, 74, 97]
Close bracket.
Python
int* p = nullptr; *p=5;
int* p = new int; *p=5;
Allocate memory.
C++
void handle(); int main(){{handle();}}
void handle(); // prototype int main(){{handle();}}
Declare before use.
C++
bar == '23'
bar === 23
Use strict equality.
JavaScript
<br></br>
<br>
Self-closing.
HTML
<div><p>test</div></p>
<div><p>test</p></div>
Nest properly.
HTML
<?php // code ?>
<?php // code ?>
Correct.
PHP
fn compute() -> i32 {{ 41 }}
fn compute() -> i32 {{ 41 }}
Correct.
Rust
match temp {{ 1 => {{}} }}
match temp {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
data[81]
if (data.indices.contains(81)) data[81]
Check index.
Kotlin
let foo: Int = 'message'
let foo: String = 'message'
Fix type.
Swift
let text1 = String::from("test"); let text2 = text1; println!("{{}}", text1);
let text1 = String::from("test"); let text2 = text1.clone(); println!("{{}}", text1);
Clone to avoid move.
Rust
int[] data = new int[24]; data[24] = 5;
int[] data = new int[24]; if (24 < data.length) data[24] = 5;
Check bounds.
Java
User.save();
User.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
if c > 20 print('data')
if c > 20: print('data')
Colon missing after if.
Python
INSERT INTO items VALUES ('result',77)
INSERT INTO items (name, email) VALUES ('result',77);
Specify columns.
SQL
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
function bar(): void {{ return 13; }}
function bar(): number {{ return 13; }}
Return type mismatch.
TypeScript
let num = 'output'
let num = "output"
Double quotes.
Swift
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
my @arr = (68,62,24);
my @arr = (68,62,24);
Correct.
Perl
{{'age':82, 'name' 14}}
{{'age':82, 'name':14}}
Colon missing.
Python
UPDATE users SET name='output' WHERE role=78
UPDATE users SET name='output' WHERE role=78;
Add semicolon.
SQL
<note name='output'/>
<note name="output"/>
Double quotes.
XML
int values[41]; values[41]=5;
int values[41]; if(41<41){{}} else values[41]=5;
Bounds check.
C++
var num int = 'world'
var num string = 'world'
Type mismatch.
Go
if ($item = 85) {{}}
if ($item -eq 85) {{}}
Use -eq.
PowerShell
cin >> temp;
int temp; cin >> temp;
Declare variable.
C++
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
class Child Entity:
class Child(Entity):
Inheritance uses parentheses.
Python
class = 'value'
class_name = 'value'
'class' is a keyword.
Python
<p>info <b>test</p></b>
<p>info <b>test</b></p>
Nest properly.
HTML
$items[62]
if ($items.Count -gt 62) {{ $items[62] }}
Check bounds.
PowerShell
if temp = 45:
if temp == 45:
Use == for comparison.
Python
disp('info')
disp('info')
Correct.
MATLAB
for (temp in arr)
for (temp of arr)
for...in iterates keys.
JavaScript
let count: i32 = "world";
let count: &str = "world";
Type mismatch.
Rust
process
process()
Add parentheses.
Kotlin
if data = 59
if data == 59
Use ==.
Go
console.log('data'
console.log('data')
Close parenthesis.
JavaScript
echo hello world
echo 'hello world'
Quote to prevent splitting.
Shell