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互联网造车运动 - 资讯 - 清泛网 - 专注C/C++及内核技术
...长达十年之久,此外,特斯拉还学习了丰田的质量控制和问题追溯体系,还有奔驰的测试流程,传统汽车企业的支持是特斯拉成功的左右手,这都需要长时间去消化。互联网企业一时半会难以造出获得消费者认可的汽车。
不过...
Nginx与Lua - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
shell> ldd /path/to/nginx
libluajit-<VERSION>.so => not found
此类问题通常使用ldconfig命令就能解决:
shell> echo "/usr/local/lib" > /etc/ld.so.conf.d/usr_local_lib.conf
shell> ldconfig
再试着启动Nginx看看,应该就OK了。
应用
我们先用一个简单的程序...
Python Linked List
...ite
Although doubly linked lists are famously used in Raymond Hettinger's ordered set recipe, singly linked lists have no practical value in Python.
I've never used a singly linked list in Python for any problem except educational.
Thomas Watnedal suggested a good educational resource How to Thi...
How to get the sizes of the tables of a MySQL database?
...x_length) / 1024 / 1024), 2) `Size in MB`
FROM information_schema.TABLES
ORDER BY (data_length + index_length) DESC;
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Error handling in getJSON calls
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what is the chronological order of done, fail, always and the code inside getJSON?
– TheLogicGuy
Aug 5 '16 at 19:58
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How can I represent an 'Enum' in Python?
.... Code is not perfectly compatible between py2 and py3, e.g. you'll need __order__ in python 2).
To use enum34, do $ pip install enum34
To use aenum, do $ pip install aenum
Installing enum (no numbers) will install a completely different and incompatible version.
from enum import Enum # f...
Sql Server string to date conversion
...' as datetime) also works, and eliminates the ambiguity over month-and-day order.
– Joe DeRose
Apr 6 '15 at 20:50
This...
实战做项目如何选择开源许可协议(一)-了解协议 - 开源 & Github - 清泛网...
...所有国家。假如你在美国,许可是从印度授权的,也没有问题。
3)授权免费 无版税, 前期、后期均无任何费用。
4)授权无排他性 任何人都可以获得授权
5)授权不可撤消 一旦获得授权,没有任何人可以取消。比如,你基...
how to return index of a sorted list? [duplicate]
...rt a list of objects based on a property of the objects. i then need to re-order a corresponding list to match the order of the newly sorted list."
That's a long-winded way of doing it. You can achieve that with a single sort by zipping both lists together then sort using the object property as y...
Shards and replicas in Elasticsearch
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An index is broken into shards in order to distribute them and scale.
Replicas are copies of the shards and provide reliability if a node is lost. There is often confusion in this number because replica count == 1 means the cluster must have the main and a ...