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Apache Proxy: No protocol handler was valid
...'t have mod_proxy_http enabled
sudo a2enmod proxy_http
For me to get my https based load balancer working, i had to enable the following:
sudo a2enmod ssl
sudo a2enmod proxy
sudo a2enmod proxy_balancer
sudo a2enmod proxy_http
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How do I determine whether my calculation of pi is accurate?
...s of digits for the purpose of verifying computations against them: http://www.numberworld.org/digits/Pi/
But when you get into world-record territory, there's nothing to compare against.
Historically, the standard approach for verifying that computed digits are correct is to recompute the digit...
What's a good hex editor/viewer for the Mac? [closed]
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On http://www.synalysis.net/ you can get the hex editor I'm developing for the Mac - Synalyze It!. It costs 7 € / 40 € (Pro version) and offers some extra features like histogram, incremental search, support of many text encodings ...
Explode string by one or more spaces or tabs
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instead of using explode, try preg_split: http://www.php.net/manual/en/function.preg-split.php
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How to install ia32-libs in Ubuntu 14.04 LTS (Trusty Tahr)
...ev:i386 is required to extract the Internet Explorer virtual machines from www.modern.ie
– Tek
Aug 7 '14 at 20:39
this...
How to install python3 version of package via pip on Ubuntu?
...r any Linux distro and supported version:
sudo apt-get install curl
curl https://bootstrap.pypa.io/get-pip.py | sudo python3
sudo pip3 install MODULE_NAME
If you don't have curl, use wget. If you don't have sudo, switch to root. If pip3 symlink does not exists, check for something like pip-3.X
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Is there a decorator to simply cache function return values?
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Python 3.8 functools.cached_property decorator
https://docs.python.org/dev/library/functools.html#functools.cached_property
cached_property from Werkzeug was mentioned at: https://stackoverflow.com/a/5295190/895245 but a supposedly derived version will be merged into 3.8...
Teachable Machine 图像分类扩展 · App Inventor 2 中文网
...接必须是从 Google Teachable Machine 导出的模型链接，格式为 https://teachablemachine.withgoogle.com/models/...。在设计器中设置。
WebViewer 网页浏览框
设置用于图像分类的 WebViewer（网页浏览框）组件。必须在设计器中指定一个 WebViewer 组件...
What does ~~ (“double tilde”) do in Javascript?
...nverts a string to a number in a round-about way.
See this thread: http://www.sitepoint.com/forums/showthread.php?t=663275
Also, more detailed info is available here: http://dreaminginjavascript.wordpress.com/2008/07/04/28/
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Selecting the last value of a column
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Actually I found a simpler solution here:
http://www.google.com/support/forum/p/Google+Docs/thread?tid=20f1741a2e663bca&hl=en
It looks like this:
=FILTER( A10:A100 , ROW(A10:A100) =MAX( FILTER( ArrayFormula(ROW(A10:A100)) , NOT(ISBLANK(A10:A100)))))
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