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AppInventor如何实现通过扫二维码导入表格数据 - App Inventor 2 拓展 - 清...
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使用原生的“条码扫描器”组件：
2、读取二维码中的url信息：
从上面条码组件的事件中获取。
3、访问远程url获取表格csv数据：
使用Web客户端组件访问url获取数据。数据格式建议采用csv（逗号分隔）格式。
4、...
大模型拓展调用报错，已解决 - 用户反馈 - 清泛IT社区，为创新赋能！
...empty" "type":"invalid_request _error"}}
解决中。
这个是拓展报的错，我后面优化一下。你可以先 调用一下 开始新对话，理论上可以先解决。
但是客户反馈还是不行。跟踪中。
后面发现用户给大模...
Ruby on Rails Server options [closed]
...he hybrid I/O model in Phusion Passenger Enterprise 4 or later makes it an excellent choice for these kinds of workloads.
Other app servers require the user to run at least one instance per application. By contrast, Phusion Passenger supports multiple applications in a single instance. This greatl...
What modern C++ libraries should be in my toolbox? [closed]
... @OliverStutz I've added some XML libraries. Credit goes to this excellent answer which contains an analysis of which one to use.
– JBentley
Dec 1 '13 at 20:32
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Fluent Validation vs. Data Annotations [closed]
...view models
Unit testing is far easier compared to Data Annotations
It has excellent client side validation support for most standard validation rules
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How do I specify a pointer to an overloaded function?
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Hurray for lambdas! Indeed, an excellent solution to the overload resolution problem. (I thought of this also, but decided to leave it out of my answer so as not to muddy the waters.)
– aldo
Feb 17 '14 at 21:20
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Python Graph Library [closed]
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There are two excellent choices:
NetworkX
and
igraph
I like NetworkX, but I read good things about igraph as well. I routinely use NetworkX with graphs with 1 million nodes with no problem (it's about double the overhead of a dict of...
Are there any open source C libraries with common data structures? [closed]
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Gnome provides an excellent library for this, called Glib, with many useful data structures and other utilities as well.
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Do zombies exist … in .NET?
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i remember when i played with saving stuff in excel using a backgroundworker i didnt released all the resources all the time (because i just skipped debugging etc). in the taskmanager i saw afterwards about 50 excel processes. did i create zombieexcelprocesses?
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How to get 30 days prior to current date?
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Try using the excellent Datejs JavaScript date library (the original is no longer maintained so you may be interested in this actively maintained fork instead):
Date.today().add(-30).days(); // or...
Date.today().add({days:-30});
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