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Difference: std::runtime_error vs std::exception()
...
std::exception is the class whose only purpose is to serve as the base class in the exception hierarchy. It has no other uses. In other words, conceptually it is an abstract class (even though it is not defined as abstract class in C++ meaning of the term).
std::runtime_error is a more spe...
How do I explicitly specify a Model's table-name mapping in Rails?
...>= 3.2 (including Rails 4+ and 5+):
class Countries < ActiveRecord::Base
self.table_name = "cc"
end
Rails <= 3.1:
class Countries < ActiveRecord::Base
self.set_table_name "cc"
...
end
share
|
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Center/Set Zoom of Map to cover all visible Markers?
...t's usage:
There are many approaches for doing what you asked for:
Grid based clustering
Distance based clustering
Viewport Marker Management
Fusion Tables
Marker Clusterer
MarkerManager
You can read about them on the provided link above.
Marker Clusterer uses Grid Based Clustering to cluster ...
Purpose of Django setting ‘SECRET_KEY’
... 'django.contrib.messages' + settings.SECRET_KEY
contrib/sessions/backends/base.py:89: pickled_md5 = md5_constructor(pickled + settings.SECRET_KEY).hexdigest()
contrib/sessions/backends/base.py:95: if md5_constructor(pickled + settings.SECRET_KEY).hexdigest() != tamper_check:
contrib/s...
How do you represent a graph in Haskell?
...anging or editing the graph frequently, I recommend using a representation based on Huet's zipper. This is the representation used internally in GHC for control-flow graphs. You can read about it here:
An Applicative Control-Flow Graph based on Huet's Zipper
Hoopl: A Modular, Reusable Library fo...
How to define a reply-to address?
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Two ways:
class Notifications < ActionMailer::Base
default :from => 'your_app@your_domain.com',
:reply_to => 'some_other_address@your_domain.com'
end
Or:
class Contacts < ActionMailer::Base
def new_contact
mail( :to => 'somebody...
Using awk to print all columns from the nth to the last
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Based on this: stackoverflow.com/a/39217130/8852408, is probable that this solution isn't very efficient.
– FcknGioconda
Jul 19 '18 at 3:32
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Best Practices for securing a REST API / web service [closed]
...re somewhat higher than with plaintext and no intermediate (read here edge based) caching servers can participate in the caching of repeatedly accessed content. Beware, your scalability may suffer if you absolutely require the encryption offered.
– Norman H
Ja...
Efficiently updating database using SQLAlchemy ORM
...on. Basically, from one side, ORM data modifications will only hit the database when you flush the changes from your session. From the other side, SQL data manipulation statements don't affect the objects that are in your session.
So if you say
for c in session.query(Stuff).all():
c.foo = c.fo...
What does [ N … M ] mean in C aggregate initializers?
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It is initialization using Designated Initializers.
The range based initialization is a gnu gcc extension.
To initialize a range of elements to the same value, write [first ... last] = value. This is a GNU extension. For example,
int widths[] = { [0 ... 9] = 1, [10 ... 99] ...