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开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
引言物联网开发者需要为自己的物联网项目选择合适的 MQTT 消息产品或服务，从而构建可靠高效的基础数据层，保障上层物联网业务。目前市面上有很多开源的 MQTT 产品，在性能功能等方面各有优点。本文将选取目前最为流行的...
Get class name using jQuery
I want to get the class name using jQuery
19 Answers
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mongorestore error: Don't know what to do with the dump file [closed]
I have mongo DB installed in the following path c:\mongodb\bin . I have configured my environment variable PATH in advanced settings.I also have mongod running .When I run the following command mongorestore dump from the following path c:\hw1-1\dump (This contains the BSON files) I'm getting th...
How can I print literal curly-brace characters in python string and also use .format on it?
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Failed to load JavaHL Library
After updating to Snow Lion I started receiving these errors in Flash Builder / Eclipse when trying to use SVN:
11 Answers...
vim “modifiable” is off
Trying to create a new file with nerd tree. I hit the a key to create a new file and i get the message:
7 Answers
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Modify table: How to change 'Allow Nulls' attribute from not null to allow null
How to change one attribute in a table using T-SQL to allow nulls (not null --> null)? Alter table maybe?
8 Answers
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if…else within JSP or JSTL
I want to output some HTML code based on some condition in a JSP file.
13 Answers
13
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Android file chooser [closed]
I want to make a file uploader. And I hence I need a file chooser but I don't want to write this by myself. I find OI file manager and I think it suits me.
But how can I force user to install OI file manager?
If I cannot , is there a better way to include a file manager in my app?
Thx
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How can I list all collections in the MongoDB shell?
In the MongoDB shell, how do I list all collections for the current database that I'm using?
22 Answers
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