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What does the “at” (@) symbol do in Python?
... at some Python code which used the @ symbol, but I have no idea what it does. I also do not know what to search for as searching Python docs or Google does not return relevant results when the @ symbol is included.
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How do you create a Swift Date object?
How do you create a date object from a date in swift xcode.
10 Answers
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How does one write code that best utilizes the CPU cache to improve performance?
.... If you have a regular access pattern, the hardware prefetcher is usually doing a very good job. And if your program doesn't display regular access patterns, you may improve things by adding prefetch instructions yourself.
Regrouping instructions in such a way that those that always miss in the ca...
How to select all records from one table that do not exist in another table?
... selection by picking only those rows in the result where the matching row does not exist. Finally, We ignore all fields from our result except for the name column (the one we are sure that exists, from table1).
While it may not be the most performant method possible in all cases, it should work in...
Why aren't programs written in Assembly more often? [closed]
...any registers?
The converse of this question would be: What functionality do compilers provide?
I doubt you can/want to/should optimize your ASM better than gcc -O3 can.
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How do I get the number of elements in a list?
...nd library types. For example:
>>> len([1,2,3])
3
Official 2.x documentation is here: len()
Official 3.x documentation is here: len()
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How do you prevent install of “devDependencies” NPM modules for Node.js (package.json)?
...regardless of the value of the NODE_ENV environment variable.
Source: npm docs
Note: Before v3.3.0 of npm (2015-08-13), the option was called --production, i.e. npm install --production.
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How do you remove Subversion control for a folder?
...d files that were checked out from a repository that no longer exists. How do I get Subversion to stop tracking that folder and any of the subfolders and files?
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In Rails, how do you render JSON using a view?
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You should be able to do something like this in your respond_to block:
respond_to do |format|
format.json
render :partial => "users/show.json"
end
which will render the template in app/views/users/_show.json.erb.
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How do you run JavaScript script through the Terminal?
...r if you wanted to run a C program make filename then ./ filename . How do you do this with .js files?
15 Answers
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