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Overriding id on create in ActiveRecord
...why you can't use mass-assignment to set it. However, when setting it manually, it just works:
o = SomeObject.new
o.id = 8888
o.save!
o.reload.id # => 8888
I'm not sure what the original motivation was, but I do this when converting ActiveHash models to ActiveRecord. ActiveHash allows you to...
Group By Multiple Columns
... fields of an anonymous type C# assumes you want to use the name of the finally accessed property/field from the projection. (So your example is equivalent to Mo0gles')
– Chris Pfohl
Jan 28 '15 at 13:54
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How to change default text file encoding in Eclipse?
...Anyway, Eclipse says that Cp1250 is a 'default' encoding and I have to manually change it to UTF-8 each time I add anything.
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How to express a NOT IN query with ActiveRecord/Rails?
.... It would still break on nil, but I find that the array you pass in is usually generated by a filter that will return [] at the very least and never nil. I recommend checking out Squeel, a DSL on top of Active Record. Then you could do: Topic.where{id.not_in actions}, nil/empty/or otherwise.
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How does a hash table work?
... book knows the title of the book and the exact title to boot, then that's all it should take. With the title, the person, with the aid of the librarian, should be able to find the book easily and quickly.
So, how can you do that? Well, obviously you can keep some kind of list of where you put each...
Style disabled button with CSS
...he disabled buttons you can use the :disabled pseudo-element. It works for all the elements.
For browsers/devices supporting CSS2 only, you can use the [disabled] selector.
As with the image, don't put an image in the button. Use CSS background-image with background-position and background-repeat....
How to “return an object” in C++?
...arameter is just a good way to make your code ugly, and in C++0x you'd actually be hurting yourself by using an out parameter.
Just write clean code, return by value. If performance is a problem, profile it (stop guessing), and find what you can do to fix it. It likely won't be returning things fro...
Python vs Cpython
What's all this fuss about Python and CPython (Jython,IronPython) , I don't get it:
9 Answers
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Why use bzero over memset?
...e used if you want to ensure the compiler doesn't quietly optimize-away a call to "scrub" memory for some security-related purpose (such as blanking-out a region of memory that contained a sensitive piece of information such as a cleartext password).
– Christopher Schultz
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YAML mime type?
...value, or alternatively, it MAY specify that there is no default value. Finally, the "UTF-8" charset [RFC3629] SHOULD be selected as the default.. There is no formal definition of text/yaml nor text/x-yaml, so the default is UTF-8.
– aef
May 6 '16 at 10:04
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