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ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides
...tion so you can regret (useful when using with DataGrid, ListView and many more, that you can show an "Are you sure" confirmation to the user), the updated VB version is in the bottom of this message.
Please accept my apology that the screen is too narrow to contain my code, I don't like it either....
What is Dispatcher Servlet in Spring?
...ontroller to send the request to. So the DispatcherServlet consults one or more handler mappings (2) to figure out where the request’s next stop will be. The handler mapping pays particular attention to the URL carried by the request when making its decision.
Once an appropriate controller has bee...
How to step back in Eclipse debugger?
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How to Use Order By for Multiple Columns in Laravel 4?
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You can do as @rmobis has specified in his answer, [Adding something more into it]
Using order by twice:
MyTable::orderBy('coloumn1', 'DESC')
->orderBy('coloumn2', 'ASC')
->get();
and the second way to do it is,
Using raw order by:
MyTable::orderByRaw("coloumn1 DESC, coloum...
How can I rename a database column in a Ruby on Rails migration?
...need to write a separate down method".
See "Active Record Migrations" for more information.
rails g migration FixColumnName
class FixColumnName < ActiveRecord::Migration
def change
rename_column :table_name, :old_column, :new_column
end
end
If you happen to have a whole bunch of colu...
How to make Sequelize use singular table names
...d on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Execute SQLite script
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@remeika I think the more idiomatic way to execute an inline command would be sqlite3 example.db 'SELECT * FROM some_table;', rather than piping an echo
– Christopher Shroba
Jan 21 '18 at 20:49
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How can I check for “undefined” in JavaScript? [duplicate]
... property was declared but just not initialized. Use the in operator for a more robust check.
"theFu" in window; // true
"theFoo" in window; // false
If you are interested in knowing whether the variable hasn't been declared or has the value undefined, then use the typeof operator, which is guara...
How to count the number of true elements in a NumPy bool array
...gt;>> np.sum(boolarr)
5
Of course, that is a bool-specific answer. More generally, you can use numpy.count_nonzero.
>>> np.count_nonzero(boolarr)
5
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How to create a trie in Python
...I'll add that creating a directed acyclic word graph (DAWG) would be a bit more complex, because you have to detect situations in which your current word shares a suffix with another word in the structure. In fact, this can get rather complex, depending on how you want to structure the DAWG! You may...