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Caesar M. Tsai KScaesar

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  • Taipei, Taiwan
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@KScaesar
KScaesar / cache_proxy_v1.go
Last active July 15, 2024 09:20
type ReadCacheProxy[Input, ViewModel any] struct {
ReadCache func(input *Input) (output *ViewModel, err error)
ReadDatabase func(input *Input) (output *ViewModel, err error)
WriteCache func(output *ViewModel) error
Key string
Locks *sync.Map
}
@KScaesar
KScaesar / commit-msg
Created July 3, 2024 15:28
check git commit-msg
#!/bin/sh
commit_msg_file=$1
commit_msg=$(cat "$commit_msg_file")
date_regex="^[0-9]{4}-[0-9]{2}-[0-9]{2}"
if ! echo "$commit_msg" | grep -qE "$date_regex"; then
echo "Error: commit message must start with a date in YYYY-MM-DD format."
exit 1
fi
@KScaesar
KScaesar / multiplex.py
Created January 5, 2024 17:15
message mux tool for python
from dataclasses import dataclass, field, ClassVar
from typing import Callable, Union, Optional, Any
from enum import Enum
Pattern = Union[Enum, str, int]
Message = Any
MessageHandler = Callable[[Message], None]
MessageDecorator = Callable[[MessageHandler], MessageHandler]
@KScaesar
KScaesar / mongo aggregate exampe.md
Created March 4, 2022 09:55

mongo shell

db.variousInstance.aggregate([
    {
        $match: {}
    },
    {
        $sort: {createAt: -1},
    },
    {
@KScaesar
KScaesar / main.go
Created February 12, 2020 06:11
測試 go 介面的動態執行
// main.go
package main
type Duck interface {
Quack()
}
type Cat struct {
Name string
}
@KScaesar
KScaesar / stringSearch.js
Last active April 13, 2019 09:46
Rabin-Karp 演算法 多模式匹配
function RabinKarpSet(string s[1~K], string patterns[1~N])
//用hash table or Cuckoo Filter 來儲存敏感詞彙相關資料
set hsSet := emptySet
//前置處理
foreach p in patterns
insert hash(p[1~M]) into hsSet
hs := hash(s[1~M])
//匹配運算
@KScaesar
KScaesar / interview.go
Created January 15, 2019 12:38
type T struct {
}
var p *T
func New() *T {
if p == nil {
p = new(T)
}
return p
@KScaesar
KScaesar / decodeJsonStruct.go
Last active September 23, 2018 11:21
//問題1用到的struct
type IssuesSearchResult struct {
TotalCount int `json:"total_count"`
//為什麼使用 struct pointer 作內嵌欄位
//不能直接定義為
//Items []Issue ?
Items []*Issue
}
//問題1用到的struct
@KScaesar
KScaesar / gopl_ch1_server2.go
Last active September 10, 2018 18:03
package main
import (
"fmt"
"net/http"
"sync"
)
var mu sync.Mutex
var count int
@KScaesar
KScaesar / Foo.js
Last active August 31, 2018 13:38
test prototype
function Foo(){
this.testArr=[2,4];
};
Foo.prototype={
str:'test',
num:1,
arr:[1,2],
obj:{a:2}
};