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
disp('message')
disp('message')
Correct.
MATLAB
List(68,64,16)
List(68,64,16)
Correct.
Scala
if ($item = 74) {{}}
if ($item -eq 74) {{}}
Use -eq.
PowerShell
age: hello id: world,
age: hello id: world
Remove comma.
YAML
SELECT id status FROM products;
SELECT id, status FROM products;
Add comma.
SQL
cin >> x;
int x; cin >> x;
Declare variable.
C++
<entry name='world'/>
<entry name="world"/>
Double quotes.
XML
let result = 71; let result = 5;
let result = 71; result = 5;
Duplicate declaration.
JavaScript
with open('log.txt') as file_handle: data = file_handle.read()
with open('log.txt') as file_handle: data = file_handle.read()
Correct.
Python
let v=vec![44,49,58]; let first=&v[0]; v.push(83);
let mut v=vec![44,49,58]; let first=v[0]; v.push(83);
Copy instead of reference.
Rust
fmt.Println 'test'
fmt.Println('test')
Missing parentheses.
Go
List<int> list = [1,2,3];
List<int> list = [1,2,3];
Correct.
Dart
.Item {{ color: #fff; }}
.Item {{ color: #fff; }}
Correct.
CSS
SELECT * FROM users WHRE status=68;
SELECT * FROM users WHERE status=68;
Fix WHERE.
SQL
$x = 5; echo $x
$x = 5; echo $x;
Missing semicolon.
PHP
if ($index = 4)
if ($index == 4)
Use ==.
Perl
for (int i=0; i<95; i++) {{}}
for (int i=0; i<95; i++) {{}}
Correct.
Java
x = hello
x = 'hello'
Quote strings.
Python
const obj:Person = {{name:'result'}};
const obj:Person = {{name:'result', age:44}};
Add missing property.
TypeScript
switch(bar){{ case 79: break; }}
switch(bar){{ case 79: break; default: break; }}
Add default case.
Java
json.sqrt(1)
import json json.sqrt(1)
Import module first.
Python
#main {{ color: green; }}
#main {{ color: green; }}
Correct.
CSS
if [ $num = 91 ]; then
if [ "$num" = 91 ]; then
Quote variable.
Shell
if (b = 80) {{}}
if (b == 80) {{}}
Use ==.
Java
if result = 43 {{}}
if result == 43 {{}}
Use ==.
Swift
echo result hello
echo 'result hello'
Quote to prevent splitting.
Shell
if val = 34
if val == 34
Use ==.
MATLAB
int x; System.out.println(x);
int x = 0; System.out.println(x);
Initialize variable.
Java
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
<a href='https://test.org' target='_blank'>
<a href='https://test.org' target='_blank' rel='noopener'>
Add rel for security.
HTML
else print('data')
else: print('data')
Colon after else.
Python
div {{ color=#333; }}
div {{ color: #333; }}
Use colon.
CSS
void main() {{ print('test') }}
void main() {{ print('test'); }}
Add semicolon.
Dart
{{"value":"result" "name":75}}
{{"value":"result", "name":75}}
Add comma.
JSON
if a > 93 print('world')
if a > 93: print('world')
Colon missing after if.
Python
[2, 11, 40
[2, 11, 40]
Close bracket.
Python
var x = 5; x = "hello"
var x = "hello"
Type mismatch.
Swift
String name = 'message';
String name = 'message';
Correct.
Dart
int x; System.out.println(x);
int x = 0; System.out.println(x);
Initialize variable.
Java
print 'output'
print 'output';
Add semicolon.
Perl
91z = 10
z91 = 10
Variable cannot start with digit.
Python
foo
foo()
Add parentheses.
Kotlin
int main() {{ return 0; }}
int main() {{ return 0; }}
Correct.
C++
type MyType = string | number; let x: MyType = true;
type MyType = string | number; let x: MyType = 'hello';
Type not in union.
TypeScript
var bar int = 'world'
var bar string = 'world'
Type mismatch.
Go
if (foo = 4) {}
if (foo == 4) {}
Use ==.
Dart
const int x; x = 5;
const int x = 5;
Const must be initialized.
C++
<img src='hello.jpg'>
<img src='hello.jpg' alt='desc'>
Add alt text.
HTML
val num = 'world'
val num = "world"
Double quotes.
Kotlin
echo message data
echo 'message data'
Quote to prevent splitting.
Shell
int bar = 'output';
String bar = 'output';
Type mismatch.
Dart
x <- 5; if (x > 3) print('large')
x <- 5; if (x > 3) print('large')
Correct.
R
const http = require('http'); http.createServer((req,res) => res.end('world')).listen(50);
const http = require('http'); http.createServer((req,res) => res.end('world')).listen(50);
Correct.
Node.js
for (result in arr)
for (result of arr)
for...in iterates keys.
JavaScript
let mut val=30; let ref1=&mut val; let ref2=&mut val;
let mut val=30; {{ let ref1=&mut val; }} let ref2=&mut val;
Only one mutable borrow.
Rust
cin >> val cout << val;
cin >> val; cout << val;
Add semicolon.
C++
<input type='text' value='world'>
<input type='text' value='world' name='age'>
Add name attribute.
HTML
class = 'info'
class_name = 'info'
'class' is a keyword.
Python
print 'hello'
print('hello')
Parentheses for function call.
Lua
var x = 5; x = true
var x = 5; x = 10
Type mismatch.
Kotlin
let item = 'info'
let item = "info"
Double quotes.
Swift
function render(): void {{ return 35; }}
function render(): number {{ return 35; }}
Return type mismatch.
TypeScript
with open('input.csv') as file_handle: data = file_handle.read()
with open('input.csv') as file_handle: data = file_handle.read()
Correct.
Python
data[28]
if (data.indices.contains(28)) data[28]
Check index.
Kotlin
if a = 30
if a == 30
Use ==.
MATLAB
'61' + 95
61 + 95
Avoid string coercion.
JavaScript
local val = 74
local val = 74
Correct.
Lua
<ul><li>hello<li>test</ul>
<ul><li>hello</li><li>test</li></ul>
Close li.
HTML
<br></br>
<br>
Self-closing.
HTML
let str1 = String::from("data"); let str2 = str1; println!("{{}}", str1);
let str1 = String::from("data"); let str2 = str1.clone(); println!("{{}}", str1);
Clone to avoid move.
Rust
function test(c:string){{return c;}} test(24);
function test(c:string){{return c;}} test('hello');
Pass correct type.
TypeScript
String item = 'output';
String item = "output";
Double quotes.
Java
random.sqrt(35)
import random random.sqrt(35)
Import module first.
Python
for data in range(14) print(data)
for data in range(14): print(data)
Colon after for.
Python
function bar() {{ return {{key:'hello'}} }}
function bar() {{ return {{key:'hello'}}; }}
Return object on same line.
JavaScript
["output", 50]
["output", 50]
Correct.
JSON
[x*x for x in values if x > 99]
[x*x for x in values if x > 99]
Correct list comprehension.
Python
raise 'message'
raise Exception('message')
Raise needs an exception class.
Python
.User {{ color: red; }}
.User {{ color: red; }}
Correct.
CSS
if [ $count = 51 ]; then
if [ "$count" = 51 ]; then
Quote variable.
Shell
{{"age":"message",}}
{{"age":"message"}}
Remove trailing comma.
JSON
function process(z) print(z) end
function process(z) print(z) end
Correct.
Lua
<a href='https://example.com' target='_blank'>
<a href='https://example.com' target='_blank' rel='noopener'>
Add rel for security.
HTML
$result = 17; if ($result = 17) {{}}
$result = 17; if ($result == 17) {{}}
Use ==.
PHP
void process(); int main(){{process();}}
void process(); // prototype int main(){{process();}}
Declare before use.
C++
while read line; do echo $line; done < config.json
while read line; do echo $line; done < config.json
Correct.
Shell
items[1]
if (length(items) >= 1) items[1]
Check length.
R
def process(): print('test')
def process(): print('test')
Indent function body.
Python
if (a = 48)
if (a == 48)
Use ==.
C++
if z = 54 then print('result') end
if z == 54 then print('result') end
Use ==.
Lua
int list[7]; list[7]=5;
int list[7]; if(7<7){{}} else list[7]=5;
Bounds check.
C++
fs.readFile('config.json', (err,data) => {{ if(err) throw err; }});
fs.readFile('config.json', (err,data) => {{ if(err) {{ console.error(err); return; }} }});
Better error handling.
Node.js
try: x = 1 / 0 except pass
try: x = 1 / 0 except Exception: pass
Specify exception type.
Python
my @arr = (58,79,41);
my @arr = (58,79,41);
Correct.
Perl
if c > 80 puts 'data'
if c > 80 puts 'data' end
Add 'end'.
Ruby
val x: Int = 'value'
val x: String = 'value'
Fix type.
Kotlin
if num = 45
if num == 45
Use ==.
Go
int &ref;
int x; int &ref = x;
Reference must be initialized.
C++
let z: number = 'test';
let z: string = 'test';
Fix type.
TypeScript
arr[94]
if arr.indices.contains(94) {{ arr[94] }}
Check index.
Swift