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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
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184
When you do len(df['column name']) you are just getting one number, namely the number of rows in...
How to install Android SDK Build Tools on the command line?
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By default, the SDK Manager from the command line does not include the build tools in the list...
Checking to see if one array's elements are in another array in PHP
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edited Mar 27 '14 at 15:00
Amal Murali
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How can I trigger a Bootstrap modal programmatically?
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answered Jul 9 '12 at 23:40
Claudio RediClaudio Redi
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Is it possible to make an HTML anchor tag not clickable/linkable using CSS?
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Diego UnanueDiego Unanue
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What does $@ mean in a shell script?
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edited Jan 4 '18 at 19:00
Andrea Bergonzo
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How to access data/data folder in Android device?
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384
Accessing the files directly on your phone is difficult, but you may be able to copy them to you...
Why array implements IList?
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edited May 11 '11 at 18:45
answered May 11 '11 at 18:22
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How can I rename a database column in a Ruby on Rails migration?
...st db:migrate as usual or however you go about your business.
For Rails 4:
While creating a Migration for renaming a column, Rails 4 generates a change method instead of up and down as mentioned in the above section. The generated change method is:
$ > rails g migration ChangeColumnName
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Unable to execute dex: Multiple dex files define Lcom/myapp/R$array;
Since updating to ADT 14 I can no longer build my project. It was building fine prior to updating.
54 Answers
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