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Error 908: Permission RECEIVE_SMS has been denied. - App Inventor 2 中...
...议检查应用程序是否有读取短信的权限，以及是否需要在AndroidManifest.xml文件中声明这些权限。一些用户还分享了他们遇到类似问题的经历，并提供了解决方法。总的来说，这个帖子是一个关于如何解决MIT App Inventor中错误908的讨...
The 'json' native gem requires installed build tools
...on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error.
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List submodules in a Git repository
...lf, namely, look at .gitmodules. This files enumerates each submodule path and the URL it refers to.
For example, from root of repository, cat .gitmodules will print contents to the screen (assuming you have cat).
Because .gitmodule files have the Git configuration format, you can use git config t...
How to keep index when using pandas merge
I would like to merge two DataFrames , and keep the index from the first frame as the index on the merged dataset. However, when I do the merge, the resulting DataFrame has integer index. How can I specify that I want to keep the index from the left data frame?
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How to generate a number of most distinctive colors in R?
I am plotting a categorical dataset and want to use distinctive colors to represent different categories. Given a number n , how can I get n number of MOST distinctive colors in R? Thanks.
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The name 'ConfigurationManager' does not exist in the current context
...The code is ASP.NET + C#. I have added System.Configuration to reference and also mentioned with using. But still it wouldn't accept the assembly.
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PDO closing connection
...ber of other reasons. When connecting or running a query, catch any error, and if it is "MySQL has gone away", attempt to connect again or run the query a second time.
– Frank Forte
Dec 14 '17 at 20:50
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Getting the array length of a 2D array in Java
I need to get the length of a 2D array for both the row and column. I’ve successfully done this, using the following code:
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Check for changes to an SQL Server table?
...of the database in any way? My preferred programming environment is .NET and C#.
8 Answers
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How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?
I have test-unit installed and rspec installed (along with -core , -expectations , -mocks and -rails version 2.6.x). When I run the command rails new foo , it uses test-unit to generate the test stub files instead of rspec .
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