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Ruby on Rails: how do I sort with two columns using ActiveRecord?
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Assuming you're using MySQL,
Model.all(:order => 'DATE(updated_at), price')
Note the distinction from the other answers. The updated_at column will be a full timestamp, so if you want to sort based on the day it was updated, you need to use a function to get just the ...
Check if string contains only whitespace
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>>> tests = ['foo', ' ', '\r\n\t', '', None]
>>> [not s or s.isspace() for s in tests]
[False, True, True, True, True]
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Create Test Class in IntelliJ
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Use the menu selection Navigate -> Test, or Ctrl+Shift+T (Shift+⌘+T on Mac). This will go to the existing test class, or offer to generate it for you through a little wizard.
sha...
How to properly reuse connection to Mongodb across NodeJs application and modules
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routes/users.js
app.get('/', function (req, res, next) {
req.db // => Db object
});
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I get a “An attempt was made to load a program with an incorrect format” error on a SQL Server repli
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I'm having this problem with a DLL, but my Project > HDP Properties... does not have a "Build" tab (seemingly everything but, but not that). Both the Compile and Debug tabs have a "Platform" dropdown, but the only item in the dropdown in both cases is "Active (Any CPU)".
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Check list of words in another string [duplicate]
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If your list of words is of substantial length, and you need to do this test many times, it may be worth converting the list to a set and using set intersection to test (with the added benefit that you wil get the actual words that are in both lists):
>>> lo...
Unresolved external symbol in object files
... Refering the correct lib files resolved the issue. Use Project->Properties->Linker->General->Additional Library Directories and Project->Properties->Linker->Input->Additional Dependencies to refer the lib directory and the lib files
– zak
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How to get the seconds since epoch from the time + date output of gmtime()?
... one.
If you want to reverse time.gmtime(), you want calendar.timegm().
>>> calendar.timegm(time.gmtime())
1293581619.0
You can turn your string into a time tuple with time.strptime(), which returns a time tuple that you can pass to calendar.timegm():
>>> import calendar
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What key shortcuts are to comment and uncomment code?
...can find out which keyboard accelerators are bound to a command in Tools -> Options on the Environment -> Keyboard page.
These commands are named Edit.CommentSelection and Edit.UncommentSelection.
(With my settings, these are bound to Ctrl+K, Ctrl+C and Ctrl+K, Ctrl+U. I would guess that ...
Mathematical functions in Swift
...ound, can all be achieved with Double.rounded(FloatingPointRoundingRule) -> Double.
Furthermore, I just downloaded and installed the latest stable version of swift on Ubuntu 18.04, and it looks like Foundation framework is all you need to import to have access to the math functions now. I tried ...