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How do I make a warning only occur once in ruby?


How do I make a warning only occur once in ruby?

By : Pradeep Awate
Date : October 16 2020, 11:12 PM
To fix this issue Is it possible to tell ruby to give a warning only once, rather than multiple times? , Based on Chaos's answer..
code :


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code analysis warning CA2000 which should not occur

code analysis warning CA2000 which should not occur


By : user2735469
Date : March 29 2020, 07:55 AM
To fix this issue "Supress results from auto-generated code" indicates that results from code that is auto-generated is not shown. Visual Studio knows that code is generated by a third-party only if it contains the GeneratedCodeAttribute (see here). Apprarently, the tool that created your code didn't add the attribute.
You can try to make another partial class of App and put the attribute there:
code :
[GeneratedCode("CodeGenerator", "1.0.0.0")]
public partial class App 
{
}
Ruby on Rails 2.3.8: Is there a way to make the destroy action for every controller only occur if a condition is met?

Ruby on Rails 2.3.8: Is there a way to make the destroy action for every controller only occur if a condition is met?


By : user3295570
Date : March 29 2020, 07:55 AM
wish help you to fix your issue It is not a good idea to write global rule for destroy action. In the simplest way you just need to check access in your controllers:
code :
class MyController < ApplicationController
  before_filter :access, :only => [:edit, :update, :destroy]

  ...

  private
  def access
    my_object = MyObject.find(params[:id])
    unless logged_in? && my_object.user == current_user
      render :template => "/error/401.html.erb", :status => 401
    end
  end
end
How to print warning messages as they occur

How to print warning messages as they occur


By : Douglas Akihiro Sato
Date : March 29 2020, 07:55 AM
it fixes the issue The call to readLines issues warnings. You can suppress warnings with suppressWarnings(). Try this:
code :
readUrl <- function(url) {
  out <- tryCatch(
    suppressWarnings(readLines(con=url, warn=FALSE)),
    error=function(e) {
      message(paste("URL does not seem to exist:", url))
      message(e)
      return(NA)
    },
    finally=message(paste("Processed URL:", url))
  )    
  return(out)
}
y <- lapply(urls, readUrl)
URL does not seem to exist: xxxxx
cannot open the connectionProcessed URL: xxxxx
Processed URL: http://stat.ethz.ch/R-manual/R-devel/library/base/html/connections.html
Processed URL: http://en.wikipedia.org/wiki/Xz
readUrl <- function(url) {
  op <- options("warn")
  on.exit(options(op))
  options(warn=1)
  out <- tryCatch(
    readLines(con=url, warn=FALSE),
    error=function(e) {
      message(paste("URL does not seem to exist:", url))
      message(e)
      return(NA)
    },
    finally=message(paste("Processed URL:", url))
  )    
  return(out)
}
y <- lapply(urls, readUrl)
Warning in file(con, "r") :
  cannot open file 'xxxxx': No such file or directory
URL does not seem to exist: xxxxx
cannot open the connectionProcessed URL: xxxxx
Processed URL: http://stat.ethz.ch/R-manual/R-devel/library/base/html/connections.html
Processed URL: http://en.wikipedia.org/wiki/Xz
Ruby how to make exit on warning?

Ruby how to make exit on warning?


By : Vallerine Mascarenha
Date : March 29 2020, 07:55 AM
To fix this issue I read that it was possible to make Ruby exit on warning by redefining Kernel.warn, but I have no idea how. How do I make Ruby exit on warn? Please provide working example. , Here is one way to override the Kernel#warn
code :
module Kernel
    alias orig_warn warn
    def warn args
        orig_warn args
        exit
    end
end

puts "Foo"
warn "Bar"
puts "Don't want to see this"
Warning : occur node apn emitter.setMaxListeners()

Warning : occur node apn emitter.setMaxListeners()


By : LI CHEN
Date : March 29 2020, 07:55 AM
hope this fix your issue I send push notications using node apn. , Try setting setMaxListeners as,
code :
process.setMaxListeners(0);
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