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Invalid default value for 'create_date' timestamp field
... - NO_ZERO_DATE.
From the reference: NO_ZERO_DATE - In strict mode, don't allow '0000-00-00' as a valid date. You can still insert zero dates with the IGNORE option. When not in strict mode, the date is accepted but a warning is generated.
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Margin on child element moves parent element
...igns this idea can bite you when you explicitly want a container. This is called a new block formatting context in CSS speak. The overflow or margin trick will give you that.
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Does :before not work on img elements?
... place an image before an img element, only some other element. Specifically, my styles are:
12 Answers
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In Python, how do you convert a `datetime` object to seconds?
...datetime(1970,1,1)).total_seconds()
1256083200.0
The starting date is usually specified in UTC, so for proper results the datetime you feed into this formula should be in UTC as well. If your datetime isn't in UTC already, you'll need to convert it before you use it, or attach a tzinfo class that ...
Removing item from vector, while in C++11 range 'for' loop?
... @SethCarnegie Erase-remove with a lambda for the predicate elegantly allows that (since this is already C++11)
– Potatoswatter
Apr 28 '12 at 23:13
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jQuery UI - Close Dialog When Clicked Outside
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Actually this will only work if the UI window is modal. Well useful if you want to shut a modal dialog
– stumac85
Dec 1 '10 at 15:07
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PyCharm shows unresolved references error for valid code
...er repeated several times in the list) you'll have to delete the files manually... I've even had to remove .idea folders once.
– danius
Mar 1 '15 at 15:14
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WWW or not WWW, what to choose as primary site name? [closed]
...ic to me. I also like shorter URLs. If it were up to me I would redirect all traffic from www.example.com to example.com.
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Is SHA-1 secure for password storage?
... on the circumstances, a hash function which was designed to be computationally expensive (such as bcrypt) might be a better choice.
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PG undefinedtable error relation users does not exist
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At first, you shall detach all connections out of database. By default you use the development environment. Then try to reset database with the following:
rake db:reset
The rake db:reset task will drop the database and set it up again....