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Ruby optional parameters

... gotcha with this method: e.g. If you're trying to make the default value for scope true and you pass in false, scope ||= true won't work. It evaluates the same as nil and will set it to true – Joshua Pinter Nov 10 '11 at 5:32 ...
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any tool for java object to object mapping? [closed]

I am trying to convert DO to DTO using java and looking for automated tool before start writing my own. I just wanted to know if there any free tool available for the same. ...
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DateTime.Now vs. DateTime.UtcNow

... been wondering what exactly are the principles of how the two properties work. I know the second one is universal and basically doesn't deal with time zones, but can someone explain in detail how they work and which one should be used in what scenario? ...
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Difference between TCP and UDP?

... TCP is a connection oriented stream over an IP network. It guarantees that all sent packets will reach the destination in the correct order. This imply the use of acknowledgement packets sent back to the sender, and automatic retransmission, cau...
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How do you convert epoch time in C#?

... To get this to work correctly I had to change .AddSeconds to .AddMilliseconds. You will need to know whether your number is coming from Seconds or Milliseconds in order to get the correct result. So for instance the following date: 140631...
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When to use nil, blank, empty? [duplicate]

... nil? - checks to see if variable is referencing an object or not empty? - may be used to check on various object types like empty string "" or empty array [] blank? - checks for nil? or empty?. share ...
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Remove URL parameters without refreshing page

...t URL and add / inject it (the new modified URL) as a new URL entry to history list, use pushState: window.history.pushState({}, document.title, "/" + "my-new-url.html"); 2- To replace current URL without adding it to history entries, use replaceState: window.history.replaceState({}, document.ti...
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HTML list-style-type dash

Is there a way to create a list-style in HTML with a dash (i.e. - or – – or — — ) i.e. 17 Answer...
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How to get a Fragment to remove itself, i.e. its equivalent of finish()?

... What I don't understand is what to do in Df when 'OK' is pressed in order to remove fragments Df, Cf, and Bf? Step #1: Have Df tell D "yo! we got the OK click!" via calling a method, either on the activity itself, or on an interface instance supplied by the activity. Step #2: Have D remove...
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How do you clear Apache Maven's cache?

Recently, Apache Maven seems to be having caching issues. Performing clean installs on our projects using Windows Vista or Windows 7 sometimes produce artifacts with the same data as a previous build even though the newer artifact's files should have been updated. ...