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How to configure Ruby on Rails with no database?
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For Rails 3 and Rails 4:
Use -O(Capital 'O') or --skip-activerecord option to generate an application without a database.
rails new myApp -O
or
rails new myApp --skip-activerecord
This Answer is reshared from here
For Rails 5:
Use --skip-active-r...
What's the difference between == and .equals in Scala?
...g is actually NaN use isNaN:
Java: https://docs.oracle.com/javase/7/docs/api/java/lang/Double.html#isNaN(double)
Scala: http://www.scala-lang.org/files/archive/api/2.11.8/index.html#scala.Double@isNaN():Boolean
share
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Access to private inherited fields via reflection in Java
...er. @seanizer Vector is not that old, and it'a a member of the collection API
– benzen
Aug 25 '10 at 17:53
"As of the...
What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...vious orders and replace them with the one provided. (PUT in terms of REST API)
@OneToMany(mappedBy="customer", orphanRemoval="true")
public List<Order> getOrders() { ... }
Without orphanRemoval old orders would be kept. (PATCH in terms of REST API)
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JSONDecodeError: Expecting value: line 1 column 1 (char 0)
...() method can handle UTF8 encoded data natively.
pycurl has a very archaic API. Unless you have a specific requirement for using it, there are better choices.
requests offers the most friendly API, including JSON support. If you can, replace your call with:
import requests
return requests.get(ur...
EF Code First foreign key without navigation property
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With EF Code First Fluent API it is impossible. You always need at least one navigation property to create a foreign key constraint in the database.
If you are using Code First Migrations you have the option to add a new code based migration on the p...
Dynamically Changing log4j log level
... Calls to logger.setLevel() or similar methods are not supported in the
API. Applications should remove these. Equivalent functionality is
provided in the Log4j 2 implementation classes but may leave the
application susceptible to changes in Log4j 2 internals.
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Handler vs AsyncTask vs Thread [closed]
...g for long periods of time,
it is highly recommended you use the various APIs provided by the
java.util.concurrent package such as Executor, ThreadPoolExecutor and
FutureTask.
Update May 2015: I found an excellent series of lectures covering this topic.
This is the Google Search: Douglas...
Set title background color
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This was introduced in API 11 (3.0 Honeycomb) which is certainly outdated enough at this point to consider this a valid option.
– zgc7009
Nov 21 '16 at 20:17
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How to check file input size with jQuery?
... (for example reading and writing local files), however, due to HTML5 File Api specification, there are some file properties that you do have access to, and the file size is one of them.
For the HTML below
<input type="file" id="myFile" />
try the following:
//binds to onchange event of ...