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Convert columns to string in Pandas

...cated dtype. object dtype breaks dtype-specific operations like DataFrame.select_dtypes(). There isn’t a clear way to select just text while excluding non-text but still object-dtype columns. When reading code, the contents of an object dtype array is less clear than 'string'. See also the se...
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what is reverse() in Django

... question = get_object_or_404(Question, pk=question_id) try: selected = question.choice_set.get(pk=request.POST['choice']) except KeyError: # handle exception pass else: selected.votes += 1 selected.save() return HttpResponseRedirect(reve...
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How do RVM and rbenv actually work?

... practical difference between RVM and rbenv is when the version of Ruby is selected. rbenv: rbenv adds a shim to the start of your path, a command with the same name as Ruby. When you type ruby at a command line the shim is run instead (because it is also called "ruby" and comes first in the path)...
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Implementing Comments and Likes in database

...ucture This pseudocode will get all the comments of photo with ID 5 SELECT * FROM actions WHERE actions.id_Stuff = 5 AND actions.typeStuff="photo" AND actions.typeAction = "comment" This pseudocode will get all the likes or users who liked photo with ID 5 (you may use count() to ...
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How to call Stored Procedure in Entity Framework 6 (Code-First)?

...Campaign] @ClientId int AS BEGIN SET NOCOUNT ON; SELECT AgeGroup, Gender, Payout FROM IntegrationResult WHERE ClientId = @ClientId END create a class that looks like: public class ResultForCampaign { public string AgeGroup { get; set; } ...
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How do I update a Linq to SQL dbml file?

... was getting 'Specified cast is not valid' errors when performing a simple select on a view. Including 1b fixed it for me – tomfumb Nov 29 '11 at 19:40 6 ...
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Detecting taps on attributed text in a UITextView in iOS

... It doesn't seem to work, when you have not-selectable UITextView – Paul Brewczynski Mar 2 '14 at 22:37  |  sho...
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Similar to jQuery .closest() but traversing descendants?

... These examples all select depth-first descendants, not breadth-first, so these can't be used to solve the original question. In my testing they all returned the first span, not the second. – JrBaconCheez M...
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The breakpoint will not currently be hit. No symbols have been loaded for this document in a Silverl

...on --> Properties Look under Common Properties --> Startup Project Select multiple startup projects select Start action on the projects you need to debug. share | improve this answer ...
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How to change the name of the active scheme in Xcode?

...t Scheme" from the "Product" menu. Click on the "Manage Schemes…" button Select the scheme whose name you wish to change Press the "Return" key It will select the name of the scheme and allow you to edit it. share ...