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How to sum a variable by group
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Is there anyway of maintaining an ID column? Say the categories are ordered and the ID column is 1:nrow(df), is it possible to keep the starting position of each category after aggregating? So the ID column would end up as, for example, 1, 3, 4, 7 after coll...
Multiline strings in JSON
... control characters. As an additional example to make it more clear, consider that "\\" is an escape sequence for backslash, as opposed to a literal backslash. The JSON grammar explicitly excludes control characters (cf. the "char" definition), and instead provides for their representation via es...
Django - filtering on foreign key properties
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student_user = User.objects.get(id=user_id)
available_subjects = Subject.objects.exclude(subject_grade__student__user=student_user) # My ans
enrolled_subjects = SubjectGrade.objects.filter(student__user=student_user)
context.update({'available_subjects': av...
Attempt to set a non-property-list object as an NSUserDefaults
...I knew what was causing this error, but I can't seem to figure out what I did wrong.
11 Answers
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What does it mean to inflate a view from an xml file?
I am new to android development and keep coming across references to Inflating views from a layout xml file. I googled and searched the development guide but still wasn't able to pick up a sense for what it means. If someone could provide a very simple example, it'd be much appreciated.
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What is the best collation to use for MySQL with PHP? [closed]
...odings should be the same, such as MySQL, Apache, the HTML and anything inside PHP.
11 Answers
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how to schedule a job for sql query to run daily?
...b and a description on the 'General' tab.
Select 'Steps' on the left hand side of the window and click 'New' at the bottom.
In the 'Steps' window enter a step name and select the database you want the query to run against.
Paste in the T-SQL command you want to run into the Command window and click ...
Call to getLayoutInflater() in places not in activity
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You can use this outside activities - all you need is to provide a Context:
LayoutInflater inflater = (LayoutInflater) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE );
Then to retrieve your different widgets, you inflate a layout:
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Git, see a list of comments of my last N commits
...Nov 24 '12 at 14:47
Delan AzabaniDelan Azabani
70.5k2222 gold badges154154 silver badges189189 bronze badges
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Delete multiple objects in django
...ModelForms and generic views. Otherwise, look into 3rd party apps that provide similar functionality. In a related question, the recommendation was django-filter.
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