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Rails hidden field undefined method 'merge' error

...an do <%= form_for @order, 'data-service' => 'test' do |f| %> And then get attribute value with jquery $('form').data('service') share | improve this answer | ...
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how to set a value for a span using JQuery

... what is the difference between .text and .html ? – ZaidRehman Jan 11 '18 at 11:56 4 ...
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What does the arrow operator, '->', do in Java?

...ssions is (Parameters) -> { Body } where the -> separates parameters and lambda expression body. The parameters are enclosed in parentheses which is the same way as for methods and the lambda expression body is a block of code enclosed in braces. ...
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Linq with group by having count

... For anyone looking to do this in vb (as I was and couldn't find anything) From c In db.Company Select c.Name Group By Name Into Group Where Group.Count > 1 share | ...
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What's the difference between URI.escape and CGI.escape?

What's the difference between URI.escape and CGI.escape and which one should I use? 7 Answers ...
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When to use the different log levels

...he following convention: Trace - Only when I would be "tracing" the code and trying to find one part of a function specifically. Debug - Information that is diagnostically helpful to people more than just developers (IT, sysadmins, etc.). Info - Generally useful information to log (service start/s...
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if/else in a list comprehension

...x in row] In general, [f(x) if condition else g(x) for x in sequence] And, for list comprehensions with if conditions only, [f(x) for x in sequence if condition] Note that this actually uses a different language construct, a conditional expression, which itself is not part of the comprehensi...
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Convert String to Uri

How can I convert a String to a Uri in Java (Android)? i.e.: 6 Answers 6 ...
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Is functional GUI programming possible? [closed]

I've recently caught the FP bug (trying to learn Haskell), and I've been really impressed with what I've seen so far (first-class functions, lazy evaluation, and all the other goodies). I'm no expert yet, but I've already begun to find it easier to reason "functionally" than imperatively for basic ...
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how to use javascript Object.defineProperty

...ed to find EVERY occurence of the discount modification in the client code and add a line if(obj.discount>80) obj.discount = 80; Then the e-shop owner may further change his strategy, like "if the customer is reseller, the maximal discount can be 90%". And you need to do the change on multiple...