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Linq select objects in list where exists IN (A,B,C)
I have a list of orders .
I want to select orders based on a set of order statuses.
5 Answers
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Tags for Emacs: Relationship between etags, ebrowse, cscope, GNU Global and exuberant ctags
...e autocompletion, the looking up of definitions, navigation of source code base or the previewing of doc-strings.
5 Answers...
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.com/rails/rails/commit/16ae3db5a5c...
How to simulate a mouse click using JavaScript?
...you want, whether Shift/Alt/Ctrl are held, etc. The options it accepts are based on the MouseEvents API.
I've tested in Firefox, Safari and Chrome. Internet Explorer might need special treatment, I'm not sure.
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Calling a base class's classmethod in Python
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super(Derived, cls).do(a)
This is how you would invoke the code in the base class's version of the method (i.e. print cls, a), from the derived class, with cls being set to the derived class.
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Python: Get the first character of the first string in a list?
...t first char) of string.
If you have the following structure:
mylist = ['base', 'sample', 'test']
And want to get fist char for the first one string(item):
myList[0][0]
>>> b
If all first chars:
[x[0] for x in myList]
>>> ['b', 's', 't']
If you have a text:
text = 'b...
Can modules have properties the same way that objects can?
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Based on this, I added another answer: stackoverflow.com/a/58526852/2124834
– user2124834
Oct 23 '19 at 15:59
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What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?
...n align views one by one (vertically/ horizontally).
RelativeLayout means based on relation of views from its parents and other views.
ConstraintLayout is similar to a RelativeLayout in that it uses relations to position and size widgets, but has additional flexibility and is easier to use in the ...
Remove a character from the end of a variable
...cludes realpath. For instance, I'm running Linux Mint 17 (which is Ubuntu based) and it doesn't have it by default. It's in the repos, but it's not installed automatically. That's what the link I posted was discussing.
– Matthew
Jul 11 '14 at 13:30
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Nullable types and the ternary operator: why is `? 10 : null` forbidden? [duplicate]
... to an int?. Note that another possibility would be to box the int 10 to a base class or interface of System.Int32. As an example GetBoolValue() ? (IFormattable)10 : null // #1B or GetBoolValue() ? 10 : (IFormattable)null // #2B will be OK. This possibility may be a reason why they don't make the nu...