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Scala list concatenation, ::: vs ++
Is there any difference between ::: and ++ for concatenating lists in Scala?
4 Answers
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How to remove an item for a OR'd enum?
...rses or 'flips' all bits for the given data type. As such, if you use the AND operator (&) with some value (let's call that value 'X') and the complement of one or more set bits (let's call those bits Q and their complement ~Q), the statement X & ~Q clears any bits that were set in Q from X...
#pragma mark in Swift?
...ons of my code in the symbol navigator. Since this is a C preprocessor command, it's not available in Swift. Is there a stand-in for this in Swift, or do I have to use ugly comments?
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Clear android application user data
...e for other apps, since it is store in private_mode. So executing this command could probalby only work on rooted devices. Otherwise you should try another approach.
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What's the difference between a file descriptor and file pointer?
I want to know the difference between a file descriptor and file pointer.
9 Answers
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How can you represent inheritance in a database?
...ar basis.
The database will not be able to enforce which attributes apply and which don't, since there is no metadata to define which attributes belong to which subtypes.
You also cannot enforce NOT NULL on attributes of a subtype that should be mandatory. You would have to handle this in your app...
Change auto increment starting number?
In MySQL, I have a table, and I want to set the auto_increment value to 5 instead of 1 . Is this possible and what query statement does this?
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How to delete cookies on an ASP.NET website
...ateTime.Now.AddDays(-1);
}
But it also makes sense to use
Session.Abandon();
besides in many scenarios.
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Display lines number in Stack Trace for .NET assembly in Release mode
...th inlined code (this step is not essential).
Press the Advanced... button and choose Output -> Debug Info -> pdb-only.
Deploy the generated .pdb file with the assembly.
Implemented with the comment below:
One other thing to check is in the "Package/Publish Web" section that the "Exclude gen...
Best way to implement keyboard shortcuts in a Windows Forms application?
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Hmm, no, the Form's KeyDown event handler is quite distinct from a menu item's Click event handler. You still do the exact same way, either call the event handler method directly (no need for it to be exclusively called by an event) or refactor the common log...