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Could not open a connection to your authentication agent

I am running into this error of: 35 Answers 35 ...
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Rails: update_attribute vs update_attributes

...te. On clicking show source you will get following code # File vendor/rails/activerecord/lib/active_record/base.rb, line 2614 2614: def update_attribute(name, value) 2615: send(name.to_s + '=', value) 2616: save(false) 2617: end and now refer update_attributes a...
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How do I compare two string variables in an 'if' statement in Bash? [duplicate]

I'm trying to get an if statement to work in Bash (using Ubuntu ): 12 Answers 12 ...
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Adding a favicon to a static HTML page

...put a favicon that I made (it's 16x16px and it's sitting in the same directory as the HTML file; it's called favicon.ico) as the "tab" icon as it were? I have read up on Wikipedia and looked at a few tutorials and have implemented the following: ...
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Moment js date time comparison

I'm using moment.js to format my date time, here I have two date values, and I want to achieve a particular function when one date is greater than the other. I read most of their docs, but didn't find the function to achieve this. I know it will be there. ...
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What are these attributes: `aria-labelledby` and `aria-hidden`

... HTML5 ARIA attribute is what you're looking for. It can be used in your code even without bootstrap. Accessible Rich Internet Applications (ARIA) defines ways to make Web content and Web applications (especially those developed with Ajax and JavaScript) more ac...
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How does cookie “Secure” flag work?

...cure flag won't be sent via an unencrypted connection. I wonder how this works in-depth. 2 Answers ...
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How to use ConcurrentLinkedQueue?

...ncurrentLinkedQueue in Java? Using this LinkedQueue , do I need to be worried about concurrency in the queue? Or do I just have to define two methods (one to retrive elements from the list and another to add elements to the list)? Note: obviously these two methods have to be synchronized. Righ...
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Rails Observer Alternatives for 4.0

... Take a look at Concerns Create a folder in your models directory called concerns. Add a module there: module MyConcernModule extend ActiveSupport::Concern included do after_save :do_something end def do_something ... end end Next, include that in the models you ...
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Chmod 777 to a folder and all contents [duplicate]

I have a web directory /www and a folder in that directory called store . 7 Answers ...