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Relative frequencies / proportions with dplyr
...y as this will make the column character and no longer numeric but matches what you asked for...
mtcars %>%
group_by (am, gear) %>%
summarise (n=n()) %>%
mutate(rel.freq = paste0(round(100 * n/sum(n), 0), "%"))
## am gear n rel.freq
## 1 0 3 15 79%
## 2 0 4 4 2...
dropping infinite values from dataframes in pandas?
what is the quickest/simplest way to drop nan and inf/-inf values from a pandas DataFrame without resetting mode.use_inf_as_null ? I'd like to be able to use the subset and how arguments of dropna , except with inf values considered missing, like:
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How to load db:seed data into test database automatically?
...ds.rb"
# or
Rails.application.load_seed
Where to place that depends on what testing framework you are using and whether you want it to be loaded before every test or just once at the beginning. You could put it in a setup call or in a test_helper.rb file.
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RegEx: Smallest possible match or nongreedy match
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Line2 "but without matching unless absolutely necessary": What does this mean?
– Raining
Apr 28 '19 at 12:16
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How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
... How do I do the first one? I know how to write a query, but not how to do what you say. Could you please show an example? Would be very helpful.
– Matsemann
Mar 12 '13 at 19:49
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How do I remove leading whitespace in Python?
...eading whitespace which may be more that spaces (tabs etc). That's usually what you want. If you want to remove spaces and spaces only, call " bla".lstrip(" ")
– balpha
Jun 6 '09 at 8:03
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How to get POSTed JSON in Flask?
...representation, not a Python dict. I'm just looking at the name, and infer what might come out of it.
– Jochem Schulenklopper
May 22 '19 at 19:01
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Submit form using a button outside the tag
...this.
As far as I know, you cannot do this without javascript.
Here's what the spec says
The elements used to create controls generally appear inside a FORM
element, but may also appear outside of a FORM element declaration
when they are used to build user interfaces. This is discussed...
HTML5 Number Input - Always show 2 decimal places
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all this seems to do is control what the step arrows do. setting a value of 1/3 will not limit the result to 2 decimals
– Sonic Soul
Jul 21 '17 at 16:16
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ActionController::InvalidAuthenticityToken
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Thanks, but I already know what authenticity token is. Check to see who that client/IP is, it looks like they are using your site without loading your views. Sorry, what "without loading views" means?
– Nikita Rybak
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