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Why do we have map, fmap and liftM?
...map exists to simplify operations on lists and for historical reasons (see What's the point of map in Haskell, when there is fmap?).
You might ask why we need a separate map function. Why not just do away with the current
list-only map function, and rename fmap to map instead? Well, that’s ...
Using a custom image for a UITableViewCell's accessoryView and having it respond to UITableViewDeleg
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this requires you to hard-code the self.tableView. what if you don't know which tableview contains the row?
– user102008
Nov 10 '11 at 23:18
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Recommendations of Python REST (web services) framework? [closed]
...omeUsefulThing, there's a chance that one forgets to do so in all calls"? What? How is that "awful"? That's a trivial consequence of referencing a function more than once. I'm failing to understand what you're talking about and how function reference is "awful" since it's inescapable.
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Is it ok to use dashes in Python files when trying to import them?
... have already mentioned, is interpreted as "import python minus code", not what you intended. If you really need to import a file with a dash in its name, you can do the following::
python_code = __import__('python-code')
But, as also mentioned above, this is not really recommended. You should ...
What's the difference between django OneToOneField and ForeignKey?
What's the difference between Django OneToOneField and ForeignKey ?
9 Answers
9
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How do you create a dropdownlist from an enum in ASP.NET MVC?
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What I don't like about EnumDropDownListFor() is that it saves into the DB the int value of the enum, not the text, so if you ever choose to add a new enum item, it must necessarily go at the end of the list, so as not to loo...
What is the behavior of integer division?
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Will result always be the floor of the division? What is the defined behavior?
Yes, integer quotient of the two operands.
6.5.5 Multiplicative operators
6 When integers are divided, the result of the / operator is the algebraic quotient with any
fractional par...
SVN how to resolve new tree conflicts when file is added on two branches
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What if the incoming changes are the ones you want? I'm unable to run svn resolve --accept theirs-full
svn resolve --accept base
share
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How to secure MongoDB with username and password
...om/manual/tutorial/enable-authentication/
If you want to learn more about what the roles actually do read more here: https://docs.mongodb.com/manual/reference/built-in-roles/
1) Start MongoDB without access control.
mongod --dbpath /data/db
2) Connect to the instance.
mongo
3) Create the us...
Recommended SQL database design for tags or tagging [closed]
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@Quilang. I still believe it depends on what you are up to :) I implemented it in both ways in different projects. In my last one I ended up with a 3 table solution because I needed a "tag-type" (or some other meta information on the tag) and could reuse some code ...