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Trouble comparing time with RSpec
I am using Ruby on Rails 4 and the rspec-rails gem 2.14. For a my object I would like to compare the current time with the updated_at object attribute after a controller action run, but I am in trouble since the spec does not pass. That is, given the following is the spec code:
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Is Fortran easier to optimize than C for heavy calculations?
From time to time I read that Fortran is or can be faster then C for heavy calculations. Is that really true? I must admit that I hardly know Fortran, but the Fortran code I have seen so far did not show that the language has features that C doesn't have.
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How to create a sub array from another array in Java?
How to create a sub-array from another array? Is there a method that takes the indexes from the first array such as:
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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...本情况，当我浏览MongoDB日志时，发现一些警告信息：
WARNING: You are running on a NUMA machine. We suggest launching mongod like this to avoid performance problems: numactl –interleave=all mongod [other options]
当时我并不太清楚NUMA是什么东西，所以没有处...
How to set up tmux so that it starts up with specified windows opened?
How to set up tmux so that it starts up with specified windows opened?
20 Answers
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jquery input select all on focus
I'm using this code to try and select all of the text in the field when a user focuses on the field. What happens is, it selects all for a second, then its unselected and the typing cursor is left where I clicked...
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How do I return multiple values from a function? [closed]
The canonical way to return multiple values in languages that support it is often tupling .
14 Answers
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Google Chrome display JSON AJAX response as tree and not as a plain text
I cannot find an answer to this one:
9 Answers
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Java 8 Iterable.forEach() vs foreach loop
Which of the following is better practice in Java 8?
8 Answers
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