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Find objects between two dates MongoDB
...: "example", "created_at" : "Sun May 30 2010 00:00:00 GMT+0300 (EEST)" }
Based on my experiments you will need to serialize your dates into a format that MongoDB supports, because the following gave undesired search results.
items.save({
name: "example",
created_at: "Sun May 30 18.49:00 +...
What's the main difference between Java SE and Java EE? [duplicate]
...dition and is normally for developing desktop applications, forms the core/base API.
Java EE stands for Java enterprise edition for applications which run on servers, for example web sites.
Java ME stands for Java micro edition for applications which run on resource constrained devices (small scal...
Scheduling recurring task in Android
...o wake up the CPU to run your code.
You should use one of those solutions based on your timing and worker thread needs.
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With MySQL, how can I generate a column containing the record index in a table?
... year( d1.date ), month( d1.date ), count( d1.id )
from maindatabase d1
where ( ( d1.date >= '2013-01-01' ) and ( d1.date <= '2014-12-31' ) )
group by YEAR( d1.date ), MONTH( d1.date ) ) d3
s...
Why does C++ require a user-provided default constructor to default-construct a const object?
...of T would invoke a user-provided constructor
of T (not inherited from a base class) or if
each direct non-variant non-static data member M of T has a default member initializer or, if M is of class type X (or array thereof), X
is const-default-constructible,
if T is a union with at le...
Rails 4 multiple image or file upload using carrierwave
...avatar:string
rake db:migrate
In post.rb
class Post < ActiveRecord::Base
has_many :post_attachments
accepts_nested_attributes_for :post_attachments
end
In post_attachment.rb
class PostAttachment < ActiveRecord::Base
mount_uploader :avatar, AvatarUploader
belongs_to :post
end...
How can I find all of the distinct file extensions in a folder hierarchy?
...folder):
for f in *.*; do printf "%s\n" "${f##*.}"; done | sort -u
I've based this upon this forum post, credit should go there.
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Is unsigned integer subtraction defined behavior?
...n the two expressions we are discussing is performed in type unsigned int, based on the operand types. The result of the addition is unsigned int. Then that result is implicitly converted to the type required in context, a conversion which fails because the value is not representable in the new ty...
Difference between Observer, Pub/Sub, and Data Binding
...the functions stored in that array.
If we want to group observers handlers based on different events. We just need to modify that observersList to an Object like
var events = {
"event1": [handler1, handler2],
"event2": [handler3]
}
see this pubsub example for details.
and people call this v...
Best way to simulate “group by” from bash?
... which is worse than two passes (which is what you get with a trivial hash based implementation). I should have said 'superlinear' instead of quadratic.
– Vinko Vrsalovic
Dec 19 '08 at 13:23
...