I want to make a matrix of buttons and, while a button gets c开发者_如何学编程licked draw a line that will connect to another button of the matrix.
Can you recommend a design pattern/approach to exposing/tolerating/recovering from system errors, Exception handling (Java, C++, Perl, PHP)?
I have a library (no source), to an certain object of which, I need 开发者_JAVA百科to add some properties.
I have a specific question about Java EE architecture. I have an application that requires several components:
Created a group of related providers using the provider pattern. Now would like to enhance my providers due to new requirements given to me. The providers were created for a bunch of customers who int
I am a newbie in design patterns. I want to create an instance of a class, say ClassA, and set some of its fields to the values read from a config file.
I want to use various email providers like GMail, mailgun, mailchimp etc and create a library to use. Those providers allow to send emails using SMTP, HTTP Post,
The producer module of my application is run by users who want to submit work to be done on a small cluster. It sends the subscriptions in JSON form through the RabbitMQ message broker.
I have a Rails ActiveRecord model that I want to return decorated results when I perform a query using my_method, but only once the query has executed and returned results.
I have a data model which contains an array of Product objects. Before reporting from this model I am required to run a set of rules which check the integrity of each Product object in the model. One
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