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Why use make over a shell script?
... other sort of tree analysis that determines what depends on what and what order to build the out-of-date things such that every prerequisite is built before every dependency, and only built once.
It's a language for declarative programming. New elements can be added without needing to merge them in...
Is 1.0 a valid output from std::generate_canonical?
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Convert line-endings for whole directory tree (Git)
... them.... instead I had to d/l from here rpmfind.net/linux/rpm2html/search.php?query=dos2unix
– Kerridge0
Aug 20 '13 at 18:20
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What are the underlying data structures used for Redis?
...ess just the top or bottom items, or when N is small.
Sets
Sets are an unordered data collection, so they are good every time you have a collection of items and it is very important to check for existence or size of the collection in a very fast way. Another cool thing about sets is support for pe...
Shuffle an array with python, randomize array item order with python
What's the easiest way to shuffle an array with python?
11 Answers
11
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Hidden Features of SQL Server
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A less known TSQL technique for returning rows in random order:
-- Return rows in a random order
SELECT
SomeColumn
FROM
SomeTable
ORDER BY
CHECKSUM(NEWID())
share
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Cross compile Go on OSX?
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Great answer, thank you! In order to compile for use on heroku (intel x86) I slightly modified the line to env GOOS=linux GOARCH=386 go build -v github.com/path/to/your/app and it works like a champ
– Ira Herman
Au...
O(nlogn) Algorithm - Find three evenly spaced ones within binary string
... ones in it and no evenly spaced 1s, so checking all pairs would be of the order of the square of the number of 1s in it: that's 4k ≈ n1.26 which unfortunately is asymptotically much larger than (n log n). In fact, the worst case is even worse: Leo Moser in 1953 constructed (effectively) such stri...
Sorting multiple keys with Unix sort
... @Arun POS is explained at the end of the man page. You just append the ordering options to the field number like this: sort -k 3,3nr -k 2,2
– andras
Aug 4 '17 at 15:03
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Rails has_and_belongs_to_many migration
...le with only a restaurant_id and user_id (no primary key), in alphabetical order.
First run your migrations, then edit the generated migration file.
Rails 3
rails g migration create_restaurants_users_table
Rails 4:
rails g migration create_restaurants_users
Rails 5
rails g migration Create...