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How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)

...environment variable for the secret_key_base in your production server. In order to solve this error you should follow these steps to create an environment variable for Linux (in my case Ubuntu) in your production server: In the terminal of your production server execute: $ RAILS_ENV=production r...
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How do I move an issue on github to another repo?

...kko's script works great but contains a bug, it creates issues in inverted order. Just add &sort=created&direction=asc to the url's query parameters in the get_issues method. – Marco Fucci Sep 29 '13 at 18:53 ...
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Generate all permutations of a list without adjacent equal elements

...ptotic running time is optimal, since the overhead of generation is on the order of the length of the output. The worst-case delay unfortunately is quadratic; it could be reduced to linear (optimal) with better data structures. from collections import Counter from itertools import permutations from...
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unix - head AND tail of file

... of its input, there is no guaranteed that it didn't consume more of it in order to find the 10th line ending, leaving less of the input for less to display. – chepner Feb 12 '16 at 16:58 ...
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How do I install an R package from source?

...step). Plus: you can use this trick with devtools library's dev_mode, in order to manage different versions of packages: Reference: doc devtools share | improve this answer | ...
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Fitting empirical distribution to theoretical ones with Scipy (Python)?

...ome continuous distribution. The values in the list are not necessarily in order, but order doesn't matter for this problem. ...
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What are the big improvements between guava and apache equivalent libraries?

...) builder pattern (ImmutableList.builder(), Joiner, CharMatcher, Splitter, Ordering, ...) immutability (immutable collections, CharMatcher, Joiner, Splitter,...) implementation hiding (Predicates.xXx, ...) favoring composition over inheritance(the ForwardXXX collections) null-checks enum-singleton p...
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How does lucene index documents?

... Yes, you are correct. The only thing to mention is the final order is defined using sorting rules (relevance index in trivial case), thus the order in which segments are searched isn't relevant. – Denis Bazhenov Jul 19 '16 at 5:25 ...
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Why should I not include cpp files and instead use a header?

..., x = y + 1, that means you have to compile all two million lines again in order to test this. And if you find out that you meant to do a x = y - 1 instead, then again, two million lines of compile are waiting for you. That's many hours of time wasted that could be better spent doing anything else...
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UIScrollView not scrolling

... You need to set the contentSize property of the scroll view in order for it to scroll properly. If you're using autolayout, you need to set contentSize in viewDidLayoutSubviews in order for it to be applied after the autolayout completes. The code could look like this: -(void)viewDidL...