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Ternary Operator Similar To ?:
...urn a value, you can use this
val a = if (1 < 0) 1 else 2
More info: https://alvinalexander.com/scala/scala-if-then-ternary-operator-cookbook-examples
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How to add multiple objects to ManyToMany relationship at once in Django ?
...dditional ways for adding to a many-to-many relationship.
Documentation: https://docs.djangoproject.com/en/dev/ref/models/relations/#django.db.models.fields.related.RelatedManager.set
set is a new nicety:
>>> new_list = [obj1, obj2, obj3]
>>> e.related_set.set(new_list)
...
Routes with Dash `-` Instead of Underscore `_` in Ruby on Rails
... private APIs is not recommended and may break in future Rails versions.
# https://github.com/rails/rails/blob/4-1-stable/actionpack/lib/action_dispatch/routing/mapper.rb#L1012
#
# config/initializers/adjust-route-paths.rb
module ActionDispatch
module Routing
class Mapper
module Resource...
What does `node --harmony` do?
...y V8 and will
potentially change without any deprecation notice.
source: https://nodejs.org/en/docs/es6/
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Difference between .keystore file and .jks file
...to back this API
a keystore as opposed to a truststore, as described here: https://stackoverflow.com/a/6341566/372643
When talking about the file and storage, this is not really a storage facility for key/value pairs (there are plenty or other formats for this). Rather, it's a container to store c...
Why can I use auto on a private type?
... // Not OK
Harry::LordVoldemort im_not_scared; // OK
return 0;
}
https://ideone.com/I5q7gw
Thanks to Quentin for reminding me of the Harry loophole.
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how can I see what ports mongo is listening on from mongo shell?
...of other arguments that can alter ports without being explicit, see here:
https://docs.mongodb.org/manual/reference/configuration-options/#sharding.clusterRole
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How can I access a JavaScript object which has spaces in the object's key?
...either way, reading & writting.
For more information read out here:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects
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Rails “validates_uniqueness_of” Case Sensitivity
...
There is a similar question but the answer is more interesting: https://stackoverflow.com/a/6422771
Basically, using :case_sensitive => false performs a very inefficient database query.
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What does Html.HiddenFor do?
...l code
<input type="hidden"/>
And also refer the following link
https://msdn.microsoft.com/en-us/library/system.web.mvc.html.inputextensions.hiddenfor(v=vs.118).aspx
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