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Importing from a relative path in Python
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MySQL: selecting rows where a column is null
...nything,
including itself (ie: NULL = NULL is always false).
See Rule 3 https://en.wikipedia.org/wiki/Codd%27s_12_rules
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Nullable vs. int? - Is there any difference?
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【教学】AppInventor2人工智能应用：Personal Image Classifier (PIC) Tool...
繁体中文原文：https://blog.cavedu.com/2019/08/27/app-inventor-image-classifier/
[color=var(--fs-experimental-link-color)][color=var(--fs-color-primary)]27
[size=0.8em]8 月
MIT App Inventor 團隊蠻早就發佈了 [color=var(--fs-experimental-link-color)]look extension，概念上...
How do you do a ‘Pause’ with PowerShell 2.0?
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RESTful on Play! framework
...rsion 1.2.3. If you download the source done by @seb and mentioned earlier https://github.com/sebhoss/play-user-sample, the creation of a new user object using POST with a JSON object is no longer possible.
You need to have specific methods for creation done using with json and xml POSTs. Outlined...
apt-get for Cygwin?
...
This got it working for me:
curl https://raw.githubusercontent.com/transcode-open/apt-cyg/master/apt-cyg > \
apt-cyg && install apt-cyg /bin
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Django, creating a custom 500/404 error page
...e for Django 2.0
Signatures for handler views were changed in Django 2.0:
https://docs.djangoproject.com/en/2.0/ref/views/#error-views
If you use views as above, handler404 will fail with message:
"handler404() got an unexpected keyword argument 'exception'"
In such case modify your views l...
Is embedding background image data into CSS as Base64 good or bad practice?
...d shouldn't be used.
1) Average latency is much faster on mobile in 2017. https://opensignal.com/reports/2016/02/usa/state-of-the-mobile-network
2) HTTP2 multiplexes
https://http2.github.io/faq/#why-is-http2-multiplexed
"Data URIs" should definitely be considered for mobile sites. HTTP access ove...
boost::flat_map and its performance compared to map and unordered_map
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