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Many-to-many relationship with the same model in rails?
...Simplest scenario, uni-directional, no additional fields
This is the most compact in code.
I'll start out with this basic schema for your posts:
create_table "posts", :force => true do |t|
t.string "name", :null => false
end
For any many-to-many relationship, you need a join table. Her...
Jquery select all elements that have $jquery.data()
...myAttr!=""]'); will return elements that do not have it assigned. @NULL 's comment only gets elements that have it set.
– arleslie
Oct 12 '14 at 1:05
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Difference between local and global indexes in DynamoDB
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php check if array contains all array values from another array
... are
present in all the arguments. Note that keys are preserved.
http://www.php.net/manual/en/function.array-intersect.php
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How does one remove an image in Docker?
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Ah, i didn't know about the command for "remove all existing container". Had written own: docker ps -a | sed -r 's/^(\w+).*/\1/g' | sed -r 's/^CONTAINER//' | sed -r 's/^(\w+)/docker rm \1/g' | awk 'system($0)' Thanks !
– Anurag
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Why use sprintf function in PHP?
I am trying to learn more about the PHP function sprintf() but php.net did not help me much as I am still confused, why would you want to use it?
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Bulk insert with SQLAlchemy ORM
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User(name="u2"),
User(name="u3")
]
s.bulk_save_objects(objects)
s.commit()
Here, a bulk insert will be made.
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Reverse a string in Python
There is no built in reverse function for Python's str object. What is the best way of implementing this method?
28 Ans...
Are the days of passing const std::string & as a parameter over?
... edited May 23 '17 at 12:18
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answered Apr 19 '12 at 16:41
Nicol BolasNicol Bo...