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How to get the original value of an attribute in Rails
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Take a look in rails documentation
http://api.rubyonrails.org/classes/ActiveModel/Dirty.html
Model.attribute_was return previous value :D
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IntelliJ IDEA with Junit 4.7 “!!! JUnit version 3.8 or later expected:”
...xample.intellijgradletest.MainActivityTest"
– Heath Borders
Feb 4 '14 at 15:38
7
In IDEA 14.0.3 f...
Tools to make CSS sprites? [closed]
... It's a nice tool, but, it requires a ZIP file of your images and the order it puts your sprites in is the ZIP order. Brian's tool below allows you to upload files and drag&drop to change order.
– Ed Bayiates
Aug 8 '12 at 22:11
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UITextView style is being reset after setting text property
I have UITextView *_masterText and after call method setText property font is being reset.
It's happening after I change sdk 7.
_masterText is IBOutlet , global and properties are set in storyboard. It's only me or this is general SDK bug?
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How do I add the contents of an iterable to a set?
What is the "one [...] obvious way" to add all items of an iterable to an existing set ?
6 Answers
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How do I plot in real-time in a while loop using matplotlib?
... Thanks a lot for the basic code. It helped me to build up some simple UI by modifying and adding features around based on your code. It saved my time = ]
– Isaac Sim
Dec 18 '18 at 0:30
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Memoization in Haskell?
...tion (fix)
Let's define f, but make it use 'open recursion' rather than call itself directly.
f :: (Int -> Int) -> Int -> Int
f mf 0 = 0
f mf n = max n $ mf (n `div` 2) +
mf (n `div` 3) +
mf (n `div` 4)
You can get an unmemoized f by using fix f
This...
Can Selenium Webdriver open browser windows silently in background?
...um RC?
You can 'supposedly', pass in some parameters into Chrome, specifically: --no-startup-window
Note that for some browsers, especially IE, it will hurt your tests to not have it run in focus.
You can also hack about a bit with AutoIT, to hide the window once it's opened.
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Label encoding across multiple columns in scikit-learn
...mn; I'd rather just have one big LabelEncoder objects that works across all my columns of data.
21 Answers
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Is it safe to parse a /proc/ file?
.../proc/mounts was a consistent snapshot.
For example:
/proc/uptime is totally atomic, as someone mentioned in another answer -- but only since Linux 2.6.30, which is less than two years old. So even this tiny, trivial file was subject to a race condition until then, and still is in most enterpris...