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Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...d_file :avatar, :styles => { :medium => "300x300>", :thumb => "100x100>" }, :default_url => "/images/:style/missing.png"
validates_attachment_content_type :avatar, :content_type => /\Aimage\/.*\Z/
end
Rails 4
class User < ActiveRecord::Base
has_attached_file :avatar, :sty...
Increase number of axis ticks
..._continuous. For example:
library(ggplot2)
dat <- data.frame(x = rnorm(100), y = rnorm(100))
ggplot(dat, aes(x,y)) +
geom_point()
Gives you this:
And overriding the scales can give you something like this:
ggplot(dat, aes(x,y)) +
geom_point() +
scale_x_continuous(breaks = round(seq(...
Preloading images with JavaScript
...idth>px -<height>px will get you there, so if your images are all 100px in height or less, you can use 0 -100px, in other words url(...) no-repeat 0 -100px.
– Alexis Wilke
Aug 10 '16 at 0:37
...
Can the Android drawable directory contain subdirectories?
...
Hopefully this will be resolved soon, i've got over 100 assets, and even then i coded some of them out. Total night mare trying to manage any marginally complex project.
– Emile
Jan 6 '11 at 16:40
...
From ND to 1D arrays
...'s also the solution of errors of this type :
Cannot feed value of shape (100, 1) for Tensor 'input/Y:0', which has shape '(?,)'
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How to create UILabel programmatically using Swift?
...self.view.frame.size.width / 2, y: self.view.frame.size.height / 2, width: 100, height: 20))
self.view.addSubView(myLabel)
}
}
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How can I fill a div with an image while keeping it proportional?
...
overflow: hidden
}
.fill img {
flex-shrink: 0;
min-width: 100%;
min-height: 100%
}
<div class="fill">
<img src="https://lorempizza.com/320/240" alt="" />
</div>
JSFiddle here
I tested this successfully in IE9, Chrome 31, and Opera 18. But no ot...
How to sort with lambda in Python
...
lst = [('candy','30','100'), ('apple','10','200'), ('baby','20','300')]
lst.sort(key=lambda x:x[1])
print(lst)
It will print as following:
[('apple', '10', '200'), ('baby', '20', '300'), ('candy', '30', '100')]
...
What to do on TransactionTooLargeException
...tion in to small chunks, for example, instead of calling applyBatch() with 1000 operations, call it with 100 each.
Do not exchange huge data (>1MB) between services and application
I dont know how to do this, but, Do not query android, which can return huge data :-)
...
Why does Math.Round(2.5) return 2 instead of 3?
...divide trickery to achieve the same effect:
c = System.Math.Truncate (n * 100) / 100; // 3.14
d = System.Math.Ceiling (n * 100) / 100; // 3.15
(a) Of course, that theory depends on the fact that your data has an fairly even spread of values across the even...