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How to list the tables in a SQLite database file that was opened with ATTACH?
....schema tablename
Print the entire table:
SELECT * FROM tablename;
List all of the available SQLite prompt commands:
.help
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How to filter None's out of List[Option]?
...flatten.
– Nicolas
Apr 11 '12 at 12:32
Sometimes I want to retrieve the contents of the Option objects, but other time...
Is there an alternative to bastard injection? (AKA poor man's injection via default constructor)
... well-known pattern, but I'll grant that overloaded constructors are marginally more 'in your face' :)
– Mark Seemann
Jul 20 '11 at 7:21
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How do I deep copy a DateTime object?
...or now assume DateTime is returned from some opaque API that I can't just call over again. For example, I have a function that handles orders that returns a DateTime which is when the customer can next place an order. Calling the function to create a copy produces side effects I don't want.
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Android emulator and virtualbox cannot run at same time
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Thanks @MichaelHampton. I installed vagrant-libvert and it worked!
– jchook
Jan 13 '19 at 21:42
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How to open link in new tab on html?
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The special targets all start with an underscore. blank would be the name of a frame or window. It may seem to work, because a new window or tab will probably be opened when none exists with the name 'blank', but a second click on the link shoul...
Is there a cross-browser onload event when clicking the back button?
For all major browsers (except IE), the JavaScript onload event doesn’t fire when the page loads as a result of a back button operation — it only fires when the page is first loaded.
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What is two way binding?
...ners). Other frameworks like Knockout do wire up two-way binding automagically.
In Backbone, you can easily achieve #1 by binding a view's "render" method to its model's "change" event. To achieve #2, you need to also add a change listener to the input element, and call model.set in the handle...
What is the worst gotcha in C# or .NET? [closed]
...return MyVar; }
}
Blammo. Your app crashes with no stack trace. Happens all the time.
(Notice capital MyVar instead of lowercase myVar in the getter.)
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What does `m_` variable prefix mean?
...'re using something like intelliSense, you can start with m_ and a list of all your member variables are shown. Part of Hungarian notation, see the part about scope in the examples here.
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