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How to drop columns using Rails migration
...or instance:
remove_column :users, :hobby
would remove the hobby Column from the users table.
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Clear back stack using fragments
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I posted something similar here
From Joachim's answer, from Dianne Hackborn:
http://groups.google.com/group/android-developers/browse_thread/thread/d2a5c203dad6ec42
I ended up just using:
FragmentManager fm = getActivity().getSupportFragmentManager();
fo...
Hour from DateTime? in 24 hours format
... This was the preferred solution for me because I just needed the int from the hour of the day. Much easier then converting to a string just to parse back into a DateTime again.
– Sev
Nov 17 '16 at 22:22
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How to get the anchor from the URL using jQuery?
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Please note: to get the hash value of the main window from inside an iFrame, you must use window.top.location.hash instead.
– Paolo Stefan
Jul 17 '13 at 13:00
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Why use Ruby's attr_accessor, attr_reader and attr_writer?
...tten assuming that age, once set, does not change, then a bug could result from code calling that mutator.
But what is happening behind the scenes?
If you write:
attr_writer :age
That gets translated into:
def age=(value)
@age = value
end
If you write:
attr_reader :age
That gets transla...
Swift - class method which must be overridden by subclass
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Case 2: Mind the fact, that if you call super.someFunc() from the overridden method, you get the error despite the fact that you overridden it. You know that you are not suppose to call it, but someone else doesn't have to know that and just follow the standard practice.
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How do you serialize a model instance in Django?
...d that's all what django serializers need to correctly serialize it, eg.:
from django.core import serializers
# assuming obj is a model instance
serialized_obj = serializers.serialize('json', [ obj, ])
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Can I prevent the Firefox developer tools network panel from clearing on page reload?
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From Firefox 31 onwards you can use the "Enable persistent logs" setting to prevent the Network Monitor from clearing the list on reload.
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What is the etymology of 'slug'? [closed]
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The term 'slug' comes from the world of newspaper production.
It's an informal name given to a story during the production process. As the story winds its path from the beat reporter (assuming these even exist any more?) through to editor through...
How to extract extension from filename string in Javascript? [duplicate]
... prototype your own).. you will just want to make sure you ensure you scan from prior to the last character.. so that 'something.' isn't matched, but 'something.x' would
– meandmycode