CV肉饼王

Some differences from dict still remain:

• The regular dict was designed to be very good at mapping operations. Tracking insertion order was secondary.
• The OrderedDict was designed to be good at reordering operations. Space efficiency, iteration speed, and the performance of update operations were secondary.
• The OrderedDict algorithm can handle frequent reordering operations better than dict. As shown in the recipes below, this makes it suitable for implementing various kinds of LRU caches.
• The equality operation for OrderedDict checks for matching order.
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一.Counter计数

1.查询某元素出现次数、查询出现此次最多的n个元素

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from collections import Counter

temp = Counter('abcdeabcdabcaba')
print(temp.items())  # dict_items([('a', 5), ('b', 4), ('c', 3), ('d', 2), ('e', 1)])

for item in temp.items():
    print(item)
"""
('a', 5)
('b', 4)
('c', 3)
('d', 2)
('e', 1)
"""

print(temp.most_common(1))  # 统计出现次数最多的一个元素,[('a', 5)]
print(temp.most_common(2))  # 统计出现次数最多个两个元素,[('a', 5), ('b', 4)]

print(temp['a'])  # 查询单个元素出现次数，5
temp['a'] += 1  # 增加单个元素出现次数，6
temp['a'] -= 1  # 增加单个元素出现次数，5
del temp['a']  # 删除,({'b': 4, 'c': 3, 'd': 2, 'e': 1})

1.数据类型

整型int、浮点数float、字符串str、布尔bool(True、False)

2.print格式化输出

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name = input('please enter your name: ')
print('hello,', name)

print('%.1f华氏度 = %.1f摄氏度' % (f, c))
# 或者
print(f'{f:.1f}华氏度 = {c:.1f}摄氏度')

姗姗来迟的年终总结，因为年末的跳槽，因为自己的懒惰，因为各种琐事，没有一个合适的时机静下心来和自己对话，所以一直拖到现在

想想2021年，似乎除了年末的换工作，并没有什么谈得上的大事，生活真的就像似水流年一样，不经意间就过去了，只能又去微信和豆瓣上翻翻，才恍然大悟”哦，原来是那个时候的事请哦”

1.下载安装nvm

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curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash
或者
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash

2.在.zshrc中配置环境变量

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export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"

1.TypeError [ERR_INVALID_ARG_TYPE]: The “mode” argument must be integer. Received an instance of Object

解决：hexo 不支持最新 node14+，降低node版本到12

[email protected]: Permission denied (publickey).fatal: Could not read from remote repository.

解决：将.ssh目录下的id_rsa.pub加到Github ssh key中

命令：将公钥复制到剪贴板：pbcopy < ~/.ssh/id_rsa.pub

一、不含z-index的堆叠规则

1.有设置了position属性的兄弟元素，不管他们的position值为何，都按照它们在HTML结构中出现的顺序堆叠

2.没有设置position属性的元素，始终在定位元素的下层，即便他们在HTML结构中位于较晚的位置

一、本文中的定义(我的理解)

1.Server Side Session

以cookie+session模式为代表，sessionData存储在数据库，生成的sessionId存储在redis/数据库，并通过set-cookie种到客户端

2.Client Side Session

以jwt为代表，sessionData存储在数据库，生成的token存储在客户端，以实现服务端无状态

1.安装依赖

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npm install --save @nestjs/swagger swagger-ui-express

1.安装依赖

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npm i --save class-validator class-transformer