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How to implement has_many :through relationships with Mongoid and mongodb?
...ction via another it would still require multiple queries.
https://github.com/mongoid/mongoid/issues/544
Normally if you have a many-many relationship in a RDBMS you would model that differently in MongoDB using a field containing an array of 'foreign' keys on either side. For example:
class Phys...
How to do an instanceof check with Scala(Test)
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Docker how to change repository name or rename image?
...image) in the output of docker images while it needs to be renamed with a command called tag whereas TAG is a separate column in that output. I hope they clean up this and other related things...
– matanster
Mar 26 '16 at 12:00
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AWS: How to disable all services?
...u can close your entire account in AWS Billing: https://console.aws.amazon.com/billing/home?#/account
Or if you just want to disable your "Free-Tier" services that has charges, view them here:
https://console.aws.amazon.com/billing/home#/freetier
Then open your EC2 dashboard - and cancel those ser...
Do I set properties to nil in dealloc when using ARC?
...g [obj setDelegate:nil]). The note about doing this on classes that aren't compiled with ARC is a nod towards weak properties. If the class explicitly marks its delegate property as weak then you don't have to do this, because the nature of weak properties means it'll get nilled out for you. However...
What are the rules for the “…” token in the context of variadic templates?
...ted — the unpacked patterns (call them expressions now) are separated by comma ,.
It can be best understood by some examples. Suppose you have this function template:
template<typename ...T> //pack
void f(T ... args) //pack
{
// here are unpack patterns
g( args... ); //pat...
C# naming convention for constants?
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The recommended naming and capitalization convention is to use PascalCasing for constants (Microsoft has a tool named StyleCop that documents all the preferred conventions and can check your source for compliance - though it is a l...
How to remove .html from URL?
...inished testing, as the browser will cache 301s. See https://stackoverflow.com/a/9204355/3217306
Update: I was slightly mistaken, . matches all characters except newlines, so includes whitespace. Also, here is a helpful regex cheat sheet
Sources:
http://community.sitepoint.com/t/what-does-this-me...
Difference between fold and reduce?
... legitimate reason for these two functions to exist or they are there to accommodate people with different backgrounds? (E.g.: String and string in C#)
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