ficapy

package main

import (
	"fmt"
	"os"
	"os/exec"
	"strconv"
	"strings"
)

ficapy

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Author: Ficapy
# Create: '16/3/4'

# !/usr/bin/env python
import ftplib
import hmac
import subprocess, json, base64, binascii, time, hashlib, re, copy, textwrap

ficapy

# var a = new Array()
# document.querySelectorAll('.text-ellipsis').forEach(items=>{a.push(items.title)})
# console.log(a.join('\n'))

# git clone https://github.com/intellij-rust/intellij-rust --depth=1 || true
# ...

# ls -1 | xargs -I{} scc -f json {}  | jq '.[] | select(.Name == "Kotlin") | .Code' | pbcopy
# ls -1 | pbcopy

ficapy

language	line	count	avg	repo	query
Go	1580380	690	2290	https://github.com/golang/go.git	rg -c -t go '^type.+interface {' | cut -d: -f2 | awk '{sum += $1}; END {print sum}'
Java	5370734	7269	739	https://github.com/openjdk/jdk.git	rg -c -t java 'interface .+{$'
Rust	895020	3495	256	https://github.com/rust-lang/rust	rg -c -t rust 'trait .+{$'
TypeScript	1461415	7376	198	https://github.com/microsoft/TypeScript.git	rg -c -t ts 'interface .+{$'

ficapy

# CPS +  高阶函数可以将递归改写成尾调用，使用Trampoline即可避免爆栈

def cpsF(x,count):
    if x == 0:
        count(1)
    else:
        cpsF(x-1,lambda y:count(x*y))

cpsF(257,print)

ficapy

一个纯函数，输出只取决于输入
使用最简单的情况举例，一个递归函数只存在一个递归调用
该递归调用讲函数分成三个部分，
1. 递归基 + 准备部分
2. 递归调用部分
3. 递归调用之后的部分

其中第一部分的 准备部分 可以影响递归调用的参数值
第三可以使用递归返回的值(写的时候可以认为这个值来自未来，或者有些更简单的情况，明显能感受到它就是从后往前在处理)

ficapy

# Redis configuration file example.
#
# Note that in order to read the configuration file, Redis must be
# started with the file path as first argument:
# 注意，为了读取配置文件，Redis必须以文件路径作为第一个参数启动。

#
# ./redis-server /path/to/redis.conf

# Note on units: when memory size is needed, it is possible to specify

ficapy

macOS 10.15.7

env SDKROOT="/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" CFLAGS="-I/usr/local/opt/openssl/include -I/usr/local/opt/readline/include -I/Library/Developer/CommandLineT
ools/SDKs/MacOSX.sdk/usr/include" CPPFLAGS="-I/usr/local/opt/zlib/include" LDFLAGS="-L/usr/local/opt/openssl/lib -L/usr/local/opt/readline/lib" asdf install python 3.9.0
python-build 3.9.0 /Users/ficapy/.asdf/installs/python/3.9.0
python-build: use openssl@1.1 from homebrew
python-build: use readline from homebrew

ficapy

// https://hackernoon.com/currying-in-js-d9ddc64f162e

function curry1(fn) {
    function nest(N, args) {
        return (...xs) => {
            if (N - xs.length === 0) {
                return fn(...args, ...xs);
            }
            return nest(N - xs.length, [...args, ...xs]);
        };

ficapy

def traverse(root):
    stack, ret = [root], []
    while stack:
        cur = stack.pop()
        if isinstance(cur, Node):
            # stack.extend([cur.right, cur.left, cur.val])  # <- 前序遍历
            # stack.extend([cur.right, cur.val, cur.left])  # <- 中序遍历
            stack.extend([cur.val, cur.right, cur.left])  # <- 后序遍历
        elif isinstance(cur, int):
            ret.append(cur)