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Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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Purpose of “consider_all_requests_local” in config/environments/development.rb?
What is the purpose of this Rails config setting...
2 Answers
2
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How can I get form data with JavaScript/jQuery?
Is there a simple, one-line way to get the data of a form as it would be if it was to be submitted in the classic HTML-only way?
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How do I set the timeout for a JAX-WS webservice client?
I've used JAXWS-RI 2.1 to create an interface for my web service, based on a WSDL. I can interact with the web service no problems, but haven't been able to specify a timeout for sending requests to the web service. If for some reason it does not respond the client just seems to spin it's wheels for...
How to allow keyboard focus of links in Firefox?
Go to this ultra-simple fiddle in a Webkit browser and click on on of the inputs:
1 Answer
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How do I explicitly specify a Model's table-name mapping in Rails?
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Rails >= 3.2 (including Rails 4+ and 5+):
class Countries < ActiveRecord::Base
self.table_name = "cc"
end
Rails <= 3.1:
class Countries < ActiveRecord::Base
self.set_table_name "cc"
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end
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What does upstream mean in nginx?
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It's used for proxying requests to other servers.
An example from http://wiki.nginx.org/LoadBalanceExample is:
http {
upstream myproject {
server 127.0.0.1:8000 weight=3;
server 127.0.0.1:8001;
server 127.0.0.1:8002;
ser...
How to keep indent for second line in ordered lists via CSS?
I want to have an "inside" list with list bullets or decimal numbers being all flush with superior text blocks. Second lines of list entries have to have the same indent like the first row!
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Fixing the order of facets in ggplot
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Make your size a factor in your dataframe by:
temp$size_f = factor(temp$size, levels=c('50%','100%','150%','200%'))
Then change the facet_grid(.~size) to facet_grid(.~size_f)
Then plot:
The graphs are now in the correct order.
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Turning off some legends in a ggplot
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You can use guide=FALSE in scale_..._...() to suppress legend.
For your example you should use scale_colour_continuous() because length is continuous variable (not discrete).
(p3 <- ggplot(mov, aes(year, rating, colour = length, shape = mpaa)) ...