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Taeho Kim dittos

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interface X<T> {
// m(o: T): void; // is ok
(o: T): void;
}
class A {
f: X<this>;
}
class B extends A {
@dittos
dittos / JpaBugTest.java
Created September 3, 2018 05:52
Saving lazy-loaded entity with IdClass throws TypeMismatchException
package org.sapzil;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.IdClass;
import javax.persistence.ManyToOne;
@dittos
dittos / Application.kt
Last active November 2, 2017 12:17
Kotlin data class + JPA
package org.sapzil
import org.springframework.boot.autoconfigure.SpringBootApplication
@SpringBootApplication
open class Application
@dittos
dittos / gist:0abf8b6dc79d08d6700e9c04b87dfc7f
Created April 5, 2017 09:13
Scala + Java serialization size
import java.io._
def sizeOf[T](x:T, y:T): (Long, Long) = {
val buf = new ByteArrayOutputStream
val oos = new ObjectOutputStream(buf)
oos.writeObject(x)
val initSize = buf.size
oos.writeObject(y)
val size = buf.size - initSize
oos.close
import sys
from ctypes import *
from math import isfinite
'''
1) 수식을 파이썬 바이트코드로 컴파일
수식이 바이트코드로 컴파일 될 때 constant folding이 돼서 너무 간단해져 버리지 않도록 함
lineno table에서 연속된 두 바이트코드의 실제 코드상 라인 번호가 255 이상 차이나면 최적화하지 않는 것을 이용
참고: https://github.com/python/cpython/blob/e4091c77026088cb0611b6e896b1579805253f5b/Python/peephole.c#L403
@dittos
dittos / ReactExample.java
Last active December 6, 2015 12:15
Possibility of React + GWT?
import static react.ReactDOM.*;
class TodoList extends ReactComponent {
public static final ReactProp<List<TodoItem>> ITEMS = ReactProp.create();
public static ReactElement.Builder<TodoList> builder() {
return ReactElement.builder(TodoList.class);
}
public ReactElement render() {
  • 쓰레드가 N개인 쓰레드 풀이 있습니다.
  • 들어오는 태스크에는 Key가 있어서, Key가 같은 태스크끼리는 들어오는 순서대로 실행되어야 합니다.

예:

Pool Size = 4
@dittos
dittos / Relay Internals.md
Last active August 29, 2015 14:27
Relay Internals
@dittos
dittos / c60.py
Last active August 29, 2015 14:17
@Code_60: Sorting
import sys
from wand.image import Image
from wand.color import Color
from wand.drawing import Drawing
with Image(filename=sys.argv[1]) as img:
pixels = []
for row in img:
for col in row:
pixels.append(col)
@dittos
dittos / IconButton.rsx
Last active August 29, 2015 14:14
React Component Container Format
name: IconButton
props:
text:
required: true
type: string
description: A button text.
example: Click Me!
icon:
required: true
type: string