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How to 'grep' a continuous stream?
...x) as it will flush by default (YMMV for other Unix-likes such as SmartOS, AIX or QNX).
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浅谈Heatmap：网页热点图生成原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...png。实际应用时，有时候点击量会非常大，此时没有必要把所有的点击都渲染出来，而应该采取随机取样的策略，如果采用MongoDB持久化的话，可以参考：The Random Attribute。
备注：代码参考image-tempest。
最终展示
形象一点来说...
How do I get the path of a process in Unix / Linux
.... Use the command readlink -f /proc/<pid>/exe to get the value.
On AIX, this file does not exist. You could compare cksum <actual path to binary> and cksum /proc/<pid>/object/a.out.
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Is there a link to GitHub for downloading a file in the latest release of a repository?
...o support https://github.com/USER/PROJECT/releases/latest/download/package.zip. That should redirected to the latest tagged package.zip release asset. Hope it's handy!
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micro:bit 微控制器教程 · App Inventor 2 中文网
...化
程式初始化时，先扫描附近的蓝牙设备，并把扫描到的设备放到 SelectBLE 这个 ListPicker 里面。断线时直接调用 BluetoothLE.Disconnect 指令。
步骤2：设备选择
在 ListPicker 中选择您的 micro:bit（名字很特...
创业者：在寻找 不迷茫 - 资讯 - 清泛网 - 专注C/C++及内核技术
...热潮从互联网领域开始，那时中关村创业大街每天涌现大把大把的项目书，不少都轻轻松松拿到了天使轮融资。
从这个角度看，杨贝明的投入似乎迟了一步。“今年融资确实要差一点。”从今年下半年开始，资本“寒冬”来临...
Url decode UTF-8 in Python
...brary as well:
import requests
url = "http://www.mywebsite.org/Data%20Set.zip"
print(f"Before: {url}")
print(f"After: {requests.utils.unquote(url)}")
Output:
$ python3 test_url_unquote.py
Before: http://www.mywebsite.org/Data%20Set.zip
After: http://www.mywebsite.org/Data Set.zip
Might be han...
Best practices for storing postal addresses in a database (RDBMS)?
...locality => Dependent locality (unused)
postal_code => Postal code / ZIP Code
thoroughfare => Street address
premise => Apartment, Suite, Box number, etc.
sub_premise => Sub premise (unused)
A lessons I've learned:
Don't store anything numerically.
Store country and administrative...
How do I detect whether a Python variable is a function?
...n of "function" that is usually not what you need. For example, it rejects zip (technically a class):
>>> type(zip), isinstance(zip, types.FunctionType)
(<class 'type'>, False)
open (built-in functions have a different type):
>>> type(open), isinstance(open, types.Functio...
在线服务的黑天鹅 - 资讯 - 清泛网 - 专注C/C++及内核技术
...使用之后，对系统可用性有较高要求，互联网服务通常会把可用性目标定在99.99%及以上，但极少能达到99.999%的。Tim有一个服务由于功能简单且稳定，较少需要变更代码，且有容错的设计，服务池没有单点问题，所以跟同事们说20...