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Git error on git pull (unable to update local ref)

...te local ref, when doing a pull in SourceTree. We used : git gc --prune=now This removes any duplicate reference objects which should fix the issue. Here are a few links where you can learn more about git references and pruning : git tip of the week git-prune documentation git references ...
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Is modern C++ becoming more prevalent? [closed]

... except the warm fuzzy feeling that you're doing things the "modern" way. Now, we have instructors and book writers who have been using the whole of C++, and getting their instructions from that perspective, such as Koenig & Moo's Accelerated C++ and Stroustrup's new textbook. So we don't lear...
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Rspec doesn't see my model Class. uninitialized constant error

... versions of RSpec move some stuff out of the spec/spec_helper.rb file, so now you also get a spec/rails_helper.rb file. If you run rails generate rspec:install, this is what it produces (rspec-rails 3.0.1, rails 4.1.1). Turns out the rails_helper.rb file contains some similar code to yours and shou...
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What is :: (double colon) in Python when subscripting sequences?

I know that I can use something like string[3:4] to get a substring in Python, but what does the 3 mean in somesequence[::3] ? ...
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Get current time in seconds since the Epoch on Linux, Bash

...e used to compute elapsed times $ printf -v beg '%(%s)T\n' -2 $ printf -v now '%(%s)T\n' -1 $ echo beg=$beg now=$now elapsed=$((now-beg)) beg=1583949610 now=1583953032 elapsed=3422 share | improve...
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When exactly is it leak safe to use (anonymous) inner classes?

...u are actually asking several questions at once. I'll do my best with the knowledge that I have to cover it and, hopefully, some others will join in to cover what I may miss. Nested Classes: Introduction As I'm not sure how comfortable you are with OOP in Java, this will hit a couple of basics. A ...
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Add 2 hours to current time in MySQL?

... SELECT * FROM courses WHERE DATE_ADD(NOW(), INTERVAL 2 HOUR) > start_time See Date and Time Functions for other date/time manipulation. share | improve thi...
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JavaScript closures vs. anonymous functions

...ree variable. That free variable is called an upvalue of the closure F. Now let's use this to figure out who uses closures and who doesn't (for the sake of explanation I have named the functions): Case 1: Your Friend's Program for (var i = 0; i < 10; i++) { (function f() { var i2...
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Browser statistics on JavaScript disabled [closed]

...ree, but I don't think that's the case. Just my opinion, but JavaScript is now a basic language of the web and I think it's time we stopped making excuses to add work for ourselves for an incredibly small minority of people who CHOOSE to limit their experience usually for outdated reasons. ...
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Displaying a message in iOS which has the same functionality as Toast in Android

I need to know if there is any method in iOS which behaves like Toast messages in Android. That is, I need to display a message which is dismissed automatically after few seconds. This is similar to the functionality of the Toast class in the Android environment. ...