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What is scope/named_scope in rails?
...Users who are subscribed to your newsletter.
You could, of course, always do this:
User.where(subscribed_to_newsletter: true).each do #something
Instead of always writing this you could, however, do something like this.
#File: users.rb
class User < ActiveRecord::Base
scope :newsletter, whe...
How do I look inside a Python object?
...nswered Jun 17 '09 at 10:28
Brandon E TaylorBrandon E Taylor
23.1k66 gold badges4343 silver badges6868 bronze badges
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The best way to remove duplicate values from NSMutableArray in Objective-C?
..., but there is a more elegant way to remove duplicates in a NSArray if you don't care about the order.
If we use Object Operators from Key Value Coding we can do this:
uniquearray = [yourarray valueForKeyPath:@"@distinctUnionOfObjects.self"];
As AnthoPak also noted it is possible to remove dupli...
Understanding the basics of Git and GitHub [closed]
I don't fully understand the purpose of using Git or Github; I know it helps to keep track of your changes and it's helpful for people collaborating with other people, but I don't collaborate with anybody so I don't know if this would be helpful for me.
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Why is lock(this) {…} bad?
The MSDN documentation says that
16 Answers
16
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What does the “Just” syntax mean in Haskell?
I have scoured the internet for an actual explanation of what this keyword does. Every Haskell tutorial that I have looked at just starts using it randomly and never explains what it does (and I've looked at many).
...
sudo echo “something” >> /etc/privilegedFile doesn't work
... is a pretty simple question, at least it seems like it should be, about sudo permissions in Linux.
15 Answers
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Create a tag in a GitHub repository
... remote repo:
git push origin --tags
From the official Linux Kernel Git documentation for git push:
--tags
All refs under refs/tags are pushed, in addition to refspecs explicitly listed on the command line.
Or if you just want to push a single tag:
git push origin <tag>
See als...
Is std::vector copying the objects with a push_back?
...are now responsible for cleaning up after them. There's no good reason to do this (not one I can think of anyway), you should always use a smart pointer.
– Ed S.
Nov 2 '12 at 0:03
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The specified named connection is either not found in the configuration, not intended to be used wit
...are having the correct one in your config.
EDIT:
As you can see here on
Documenation on ObjectContext Constructor, the first parameter is the connectionstring name which is code generated at the time you create your EDM. If, somehow, the name of your connectionstring name happens to be changed, ...