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@ variables in Ruby on Rails
... methods within the class.
You can read more here:
http://strugglingwithruby.blogspot.dk/2010/03/variables.html
In Ruby on Rails - declaring your variables in your controller as instance variables (@title) makes them available to your view.
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Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
...that are not in a2, don't you want to use something like semi_join(a1, a2, by = c('a','b')) ? In the answer by "Rickard", I see that semi_join was suggested.
– steveb
Dec 14 '16 at 8:29
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How can I make my custom objects Parcelable?
...l any kind of data you want. Try it out.
EDIT: Another example, suggested by Rukmal Dias.
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Role/Purpose of ContextLoaderListener in Spring?
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Usually it's better to distribute the beans by reflecting the layers of the architecture of your application. Beans for the presentation layer (for example mvc controllers) can be in dispatcher-servlet.xml. Beans belonging to the service layer should be defined applica...
How to reset a form using jQuery with .reset() method
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no conflicting ID :( i'm trying to select layer by layer and check if the click works
– yvonnezoe
May 9 '13 at 2:16
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HTML File Selection Event
...t time you add a file, 'on change' event will trigger.
document.getElementById('my_input').value = null;
// ^ that just erase the file path but do the trick
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Entity Framework Timeouts
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I don't believe this is a bug, but rather by design, see Remarks section here link
– Mick P
May 19 '15 at 8:45
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support FragmentPagerAdapter holds reference to old fragments
...ered an implementation detail. A ViewPager does lazy loading of its pages; by default it only loads the current page, and the one to the left and right.
If you put your app into the background, the fragments that have been added to the fragment manager are saved automatically. Even if your app is k...
How to get nice formatting in the Rails console
...e you can get the y method to work:
YAML::ENGINE.yamler = 'syck'
From ruby-docs
In older Ruby versions, ie. <= 1.9, Syck is still provided, however it
was completely removed with the release of Ruby 2.0.0.
For rails 4/ruby 2 you could use just
puts object.to_yaml
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An explicit value for the identity column in table can only be specified when a column list is used
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@AleksandrKhomenko: Yes, that's what I meant by "make [it] a regular (non-identity) int column".
– Heinzi
Apr 11 '16 at 14:23
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