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What is a higher kinded type in Scala?
...s "zero-order", but I have not seen this used anywhere), such as the value 1 or the type String, we usually say something is a "proper" value or type.
A proper value is "immediately usable" in the sense that it is not waiting for arguments (it does not abstract over them). Think of them as values th...
A fast method to round a double to a 32-bit int explained
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162
A double is represented like this:
and it can be seen as two 32-bit integers; now, the int ...
Turn off Visual Studio Attach security warning when debugging IIS
When using Visual Studio 2008 or 2010, every time you attach to IIS w3wp.exe you get an Attach Security Warning,
11 Answer...
How do I call one constructor from another in Java?
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21 Answers
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C++ Exceptions questions on rethrow of original exception
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152
In both cases, since you catch by reference, you are effectively altering the state of the ori...
Linux, Why can't I write even though I have group permissions?
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edited Mar 20 '17 at 10:18
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answered Feb 20 '11 at 2:49
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How to position a DIV in a specific coordinates?
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175
Script its left and top properties as the number of pixels from the left edge and top edge res...
Chrome Extension Message passing: response not sent
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edited Sep 6 '17 at 14:53
answered Nov 19 '13 at 17:18
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How to debug JavaScript / jQuery event bindings with Firebug or similar tools?
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Run a callback only if an attribute has changed in Rails
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Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_change_to_status_id?
private
def do_something
# ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://github....