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What are type lambdas in Scala and what are their benefits?
... point[A](a: A): M[A]
def bind[A, B](m: M[A])(f: A => M[B]): M[B]
}
Now, Either is a type constructor of two arguments, but to implement Monad, you need to give it a type constructor of one argument. The solution to this is to use a type lambda:
class EitherMonad[A] extends Monad[({type λ[...
Programmatically Request Access to Contacts
... longer works. I believe this is a permission related problem, since Apple now requires user permission before accessing contacts (fixing this issue).
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New features in java 7
...new features in java 7 is going to be implemented?
And what are they doing now?
8 Answers
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What is the best method to merge two PHP objects?
...objB AS $var=>$value){
$objA->$var = $value;
}
That's all. You now have objA with all values from objB.
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Sequelize.js: how to use migrations and sync
...isten(3000);
// do your stuff
});
});
I can't try this right now, but at first look it should work.
UPD Apr. 2016
After a year, still useful, so sharing my current tips. For now, I'm installing sequelize-cli package as required live dependancy, and then modify NPM startup scripts in ...
Get event listeners attached to node using addEventListener
...ification or reasoning for why it must work this way? Clearly the browser knows what all of the listeners are.
– Darth Egregious
Apr 5 '12 at 19:23
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ImportError: No module named pip
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I am having python2 and 3 on the same machine but for now I wanted to use Python3. Hence I had to modify the comment above to sudo python3 -m pip install matplotlib (I had to do this via sudo, otherwise some folder permission didnt work). (edited the answer correspondingly)
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DateTime.ToString() format that can be used in a filename or extension?
...
You can use this:
DateTime.Now.ToString("yyyy-dd-M--HH-mm-ss");
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One SVN repository or many?
...t and branching in the one-repository-multiple-projects setup? I'm working now with a company that has many projects in one repository, each with its own /project/<trunk><branch><tags> folder system. But the engineers have been checking out all projects at once from the root direct...
AttributeError: 'module' object has no attribute 'tests'
...ews.py) was still trying to import the deleted model.
When I took out the now-obsolete import statement, problem solved.
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