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ElefleaV2EX member #175719, joined on 2016-06-02 17:12:34 +08:00 |
| 求问有没有这样的笔记 APP 问与答 • Eleflea • Jan 13, 2023 • Lastly replied by putaosi | 5 |
| 求助一个矩阵符号记法 问与答 • Eleflea • Nov 1, 2019 • Lastly replied by Eleflea | 3 |
| 迫于在哈尔滨，有什么冬装推荐？ 问与答 • Eleflea • Oct 9, 2019 • Lastly replied by zaul | 6 |
| 有什么能方便地加速 github clone 的方法吗？ 问与答 • Eleflea • Sep 19, 2019 • Lastly replied by skyqqcc | 6 |
| 有人了解联想 NOK 主板吗？ 问与答 • Eleflea • Aug 30, 2019 • Lastly replied by siknet | 6 |
| BT 下载导致无线路由器爆炸 无要点 • Eleflea • Aug 8, 2020 • Lastly replied by laizenan | 45 |
| 树莓派扫不到 Wifi，竟是信道的问题？ Raspberry Pi • Eleflea • May 7, 2018 • Lastly replied by Sanko | 4 |
| 怎样实现图片的左右拖动效果 CSS • Eleflea • Apr 20, 2018 |
Eleflea's recent replies
没有大佬知道吗？(っ °Д °;)っ
Jan 29, 2020 Replied to a topic by WinG › 问与答 › 最易上手的 Python 机器学习/神经网络库 是什么？ |
pytorch
Nov 1, 2019 Replied to a topic by Eleflea › 问与答 › 求助一个矩阵符号记法 |
对的，是 p 行 p 列，太蠢了我。结贴了。
Oct 10, 2019 Replied to a topic by CLANNADHH › Python › 今天准备离职的同事交接工作，有一段代码，大家看看。 |
我觉得这样做没什么问题。Python 的 try...except 不仅是用来处理错误的。参见 fluent python P449.
In Python, try/except is commonly used for control flow, and not just for error han‐
dling. There’s even an acronym/slogan for that documented in the official Python glos‐
sary:
EAFP
Easier to ask for forgiveness than permission. This common Python coding style
assumes the existence of valid keys or attributes and catches exceptions if the as‐
sumption proves false. This clean and fast style is characterized by the presence of
many try and except statements. The technique contrasts with the LBYL style com‐
mon to many other languages such as C.
In Python, try/except is commonly used for control flow, and not just for error han‐
dling. There’s even an acronym/slogan for that documented in the official Python glos‐
sary:
EAFP
Easier to ask for forgiveness than permission. This common Python coding style
assumes the existence of valid keys or attributes and catches exceptions if the as‐
sumption proves false. This clean and fast style is characterized by the presence of
many try and except statements. The technique contrasts with the LBYL style com‐
mon to many other languages such as C.
@keith1126 看来只有这种方法了。
@rogwan 折线嘛，肯定有多个不可导的点，分段光滑。
Aug 30, 2019 Replied to a topic by Eleflea › 问与答 › 有人了解联想 NOK 主板吗？ |
@siknet 今天拆开看了下，准备换主板了。另外这个型号就是鲁大师显示的，adia64 甚至识别不出这块主板的型号。
Aug 30, 2019 Replied to a topic by Eleflea › 问与答 › 有人了解联想 NOK 主板吗？ |
@siknet 这机器是之前别人配的
Jul 12, 2019 Replied to a topic by bgm004 › 互联网 › 求一个 b 站视频批量下载的方法 |
you-get 很方便
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