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Jackson with JSON: Unrecognized field, not marked as ignorable
...eed to convert a certain JSON string to a Java object. I am using Jackson for JSON handling. I have no control over the input JSON (I read from a web service). This is my input JSON:
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Hash collision in git
...n this we can ask the question...
How many commits do you need in a repository before you should start worrying about collisions?
This relates to so called "Birthday attacks", which in turn refers to the "Birthday Paradox" or "Birthday Problem", which states that when you pick randomly from a given ...
Difference between java.exe and javaw.exe
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java.exe is the command where it waits for application to complete untill it takes the next command.
javaw.exe is the command which will not wait for the application to complete. you can go ahead with another commands.
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How to get a resource id with a known resource name?
I want to access a resource like a String or a Drawable by its name and not its int id.
10 Answers
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Is there a way that I can check if a data attribute exists?
...
}
NOTE this only returns true if the data attribute is not empty string or a "falsey" value e.g. 0 or false.
If you want to check for the existence of the data attribute, even if empty, do this:
if (typeof $("#dataTable").data('timer') !== 'undefined') {
...
}
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no new variables on left side of :=
...ing variable.
myArray = [...]int{11,12,14}
colon : is used when you perform the short declaration and assignment for the first time as you are doing in your first statement i.e. myArray :=[...]int{12,14,26}.
share
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When should I use GC.SuppressFinalize()?
...essFinalize should only be called by a class that has a finalizer. It's informing the Garbage Collector (GC) that this object was cleaned up fully.
The recommended IDisposable pattern when you have a finalizer is:
public class MyClass : IDisposable
{
private bool disposed = false;
protect...
WebSockets vs. Server-Sent events/EventSource
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SSE connections can only push data to the browser. Online stock quotes, or twitters updating timeline or feed are good examples of an application that could benefit from SSE.
In practice since everything that can be done with SSE can also be done with Websockets, Websockets is getting a lot more...
A cron job for rails: best practices?
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I'm using the rake approach (as supported by heroku)
With a file called lib/tasks/cron.rake ..
task :cron => :environment do
puts "Pulling new requests..."
EdiListener.process_new_messages
puts "done."
end
To execute from the command line, this is ...
Can't use Swift classes inside Objective-C
...wer! Hope this post will help someone :-)
Step by step Swift integration for Xcode Objc-based project:
Create new *.swift file (in Xcode) or add it by using Finder.
Create an Objective-C bridging header when Xcode asks you about that.
Implement your Swift class:
import Foundation
// use @objc o...