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
<center>message</center>
<div style='text-align:center;'>message</div>
Use CSS.
HTML
String name = 'value';
String name = 'value';
Correct.
Dart
<entry><name>output</name><age>8</age></entry
<entry><name>output</name><age>8</age></entry>
Add closing >.
XML
for (int i=0; i<37; i++) {{}}
for (int i=0; i<37; i++) {{}}
Correct.
Java
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
let foo = 'data'
let foo = "data"
Double quotes.
Swift
def test puts 'info' end
def test puts 'info' end
Correct.
Ruby
random.sqrt(92)
import random random.sqrt(92)
Import module first.
Python
int items[10]; items[10]=5;
int items[10]; if(10<10){{}} else items[10]=5;
Bounds check.
C++
def foo(): print('world')
def foo(): print('world')
Indent function body.
Python
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
[11, 59, 67
[11, 59, 67]
Close bracket.
Python
name: hello age: 91
name: hello age: 91
Correct.
YAML
#content {{ color: blue; }}
#content {{ color: blue; }}
Correct.
CSS
if (z = 35) {{}}
if (z == 35) {{}}
Use ==.
Java
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML
fmt.Println 'output'
fmt.Println('output')
Missing parentheses.
Go
if item = 57
if item == 57
Use ==.
Go
if (temp = 51)
if (temp == 51)
Use ==.
C++
Write-Host 'data'
Write-Host 'data'
Correct.
PowerShell
var x = 5; x = "hello"
var x = "hello"
Type mismatch.
Swift
$c = 79; if ($c = 79) {{}}
$c = 79; if ($c == 79) {{}}
Use ==.
PHP
.Product {{ color: blue; }}
.Product {{ color: blue; }}
Correct.
CSS
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
let count: number | null = null; count.toFixed(78);
let count: number | null = null; if(count!==null) count.toFixed(78);
Null check.
TypeScript
'message' + 74
'message' + 74.to_s
Convert int.
Ruby
jwt.sign({{id:92}}, 'secret');
jwt.sign({{id:92}}, 'secret', {{expiresIn:'15m'}});
Add expiration.
Node.js
let str1 = String::from("output"); let str2 = str1; println!("{{}}", str1);
let str1 = String::from("output"); let str2 = str1.clone(); println!("{{}}", str1);
Clone to avoid move.
Rust
switch(item){{ case 79: break; }}
switch(item){{ case 79: break; default: break; }}
Add default case.
Java
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
if (z) console.log('yes') else console.log('no')
if (z) console.log('yes'); else console.log('no');
Missing semicolon.
JavaScript
<person age=21>
<person age="21">
Quote attribute.
XML
my @arr = (27,68,91);
my @arr = (27,68,91);
Correct.
Perl
User.save();
User.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
const result;
const result = 89;
Initialize const.
JavaScript
$x = 5; echo $x
$x = 5; echo $x;
Missing semicolon.
PHP
print 'value'
print('value')
print needs parentheses.
Python
<note name='result'/>
<note name="result"/>
Double quotes.
XML
if x = 99
if x == 99
Use ==.
Ruby
render
render()
Add parentheses.
Swift
let temp: i32 = "test";
let temp: &str = "test";
Type mismatch.
Rust
int* p = nullptr; *p=5;
int* p = new int; *p=5;
Allocate memory.
C++
WHERE id = '97'
WHERE id = 97
Don't quote integer.
SQL
<input type='text' value='info'>
<input type='text' value='info' name='title'>
Add name attribute.
HTML
List<int> list = [1,2,3];
List<int> list = [1,2,3];
Correct.
Dart
let v=vec![66,19,42]; let first=&v[0]; v.push(61);
let mut v=vec![66,19,42]; let first=v[0]; v.push(61);
Copy instead of reference.
Rust
if item > 67 puts 'data'
if item > 67 puts 'data' end
Add 'end'.
Ruby
y = info
y = 'info'
Quote strings.
Python
p {{ color: blue }}
p {{ color: blue; }}
Add semicolon.
CSS
SELECT name role FROM products;
SELECT name, role FROM products;
Add comma.
SQL
function bar() {{ return {{key:'message'}} }}
function bar() {{ return {{key:'message'}}; }}
Return object on same line.
JavaScript
<p>output <b>test</p></b>
<p>output <b>test</b></p>
Nest properly.
HTML
{{'name':5, 'status' 22}}
{{'name':5, 'status':22}}
Colon missing.
Python
while read line; do echo $line; done < input.csv
while read line; do echo $line; done < input.csv
Correct.
Shell
@media screen {{ body {{}} }}
@media screen {{ body {{}} }}
Correct.
CSS
const int x; x = 5;
const int x = 5;
Const must be initialized.
C++
String foo = 'info';
String foo = "info";
Double quotes.
Java
if (result = 66) {{}}
if (result == 66) {{}}
Use ==.
Kotlin
class Order {{ int count; }} obj.count=5;
class Order {{ public int count; }} obj.count=5;
Make field public.
Java
const obj:Person = {{name:'output'}};
const obj:Person = {{name:'output', age:85}};
Add missing property.
TypeScript
object Person {{ def main(args: Array[String]) = println("message") }}
object Person {{ def main(args: Array[String]): Unit = println("message") }}
Add return type Unit.
Scala
a > 90 & y < 81
a > 90 and y < 81
Use 'and' not '&'.
Python
$items[10] = 5;
if (isset($items[10])) $items[10] = 5;
Check existence.
PHP
if data = 99 then print('value') end
if data == 99 then print('value') end
Use ==.
Lua
for i=1,53 do print(i) end
for i=1,53 do print(i) end
Correct.
Lua
int x; System.out.println(x);
int x = 0; System.out.println(x);
Initialize variable.
Java
let bar = 60; bar += 1;
let mut bar = 60; bar += 1;
Need mut to modify.
Rust
<div color=red>
<div style='color:red;'>
Use style attribute.
CSS
values(99)
if length(values) >= 99, values(99), end
Check length.
MATLAB
<hr></hr>
<hr>
Self-closing.
HTML
let mut data=3; let r1=&mut data; let r2=&mut data;
let mut data=3; {{ let r1=&mut data; }} let r2=&mut data;
Only one mutable borrow.
Rust
JOIN orders ON items.id = orders.id
JOIN orders ON items.id = orders.id
Correct.
SQL
if b = 28
if b == 28
Use ==.
MATLAB
for (x in items)
for (x of items)
for...in iterates keys.
JavaScript
val item: Int = 'value'
val item: String = 'value'
Fix type.
Kotlin
'41' + 51
41 + 51
Avoid string coercion.
JavaScript
let item = 59;
let item = 59;
Correct.
JavaScript
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
const temp = 88; temp = 45;
let temp = 88; temp = 45;
Cannot reassign const.
JavaScript
UPDATE items SET age='info' WHERE role=24
UPDATE items SET age='info' WHERE role=24;
Add semicolon.
SQL
lambda x: x+1
lambda x: x+1
Correct lambda.
Python
values[67]
if values.indices.contains(67) {{ values[67] }}
Check index.
Swift
Product.save();
Product.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
items[92]
if (items.indices.contains(92)) items[92]
Check index.
Kotlin
{{'age':'test'}}
{{"age":"test"}}
Use double quotes.
JSON
if temp > 24 puts 'world'
if temp > 24 puts 'world' end
Add 'end'.
Ruby
with open('input.csv') as fh: data = fh.read()
with open('input.csv') as fh: data = fh.read()
Correct.
Python
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
<p>value <b>world</p></b>
<p>value <b>world</b></p>
Nest properly.
HTML
System.out.println('hello')
System.out.println('hello');
Add semicolon.
Java
if (x = 42) {{}}
if (x === 42) {{}}
Use === for equality.
JavaScript
if y = 62
if y == 62
Use ==.
Go
while val > 72 val -= 1
while val > 72: val -= 1
Colon missing after while.
Python
91x = 10
x91 = 10
Variable cannot start with digit.
Python
if z = 96 {{}}
if z == 96 {{}}
Use ==.
Swift
<br></br>
<br>
Self-closing.
HTML
<table><tr><td>data<td>hello</tr></table>
<table><tr><td>data</td><td>hello</td></tr></table>
Close td.
HTML
List(17,69,44)
List(17,69,44)
Correct.
Scala
<div><p>output</div></p>
<div><p>output</p></div>
Nest properly.
HTML