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Can anyone explain python's relative imports?
I can't for the life of me get python's relative imports to work. I have created a simple example of where it does not function:
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how to permit an array with strong parameters
...O,
ActionDispatch::Http::UploadedFile and Rack::Test::UploadedFile.
To declare that the value in params must be an array of permitted scalar values map the key to an empty array:
params.permit(:id => [])
In my app, the category_ids are passed to the create action in an array
"category...
A weighted version of random.choice
I needed to write a weighted version of random.choice (each element in the list has a different probability for being selected). This is what I came up with:
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What's the most appropriate HTTP status code for an “item not found” error page
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Damn you for giving good advice :( The OCD to not 404 all the things is real though.
– Carrie Kendall
Jul 18 '17 at 18:24
20
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How to go up a level in the src path of a URL in HTML?
I am storing style sheets in {root}/styles while images in {root}/images for a website.
How do I give the path in the style sheets to go look in the images directory for the specified images?
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How do I test if a string is empty in Objective-C?
...edited Aug 28 '14 at 15:17
John Topley
104k4343 gold badges186186 silver badges234234 bronze badges
answered May 22 '09 at 18:14
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HTTP status code for update and delete?
...either the 200 (OK) or 204 (No Content) response codes > SHOULD be sent to indicate successful completion of the request.
DELETE
A successful response SHOULD be 200 (OK) if the response includes an entity describing the status, 202 (Accepted) if the action has not yet been enacted, or 2...
conditional unique constraint
I have a situation where i need to enforce a unique constraint on a set of columns, but only for one value of a column.
6 A...
Retina displays, high-res background images
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Do I need to double the size of the .box div to 400px by 400px to
match the new high res background image
No, but you do need to set the background-size property to match the original dimensions:
@media (-webkit-min-device-pixel-r...
Cast Object to Generic Type for returning
Is there a way to cast an object to return value of a method?
I tried this way but it gave a compile time exception in "instanceof" part:
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