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What exactly is metaprogramming?
... eval("x" + i). DoSomething() would affect an object called x1 when i is 1 and x2 when i is 2.
Finally, another common form of metaprogramming is when the program can change itself in non-trivial fashions. LISP is well known for this and is something Paul Graham championed about a decade ago. I'll ...
Is there an opposite of include? for Ruby Arrays?
...name)
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end
ActiveSupport adds the exclude? method to Array, Hash, and String. This is not pure Ruby, but is used by a LOT of rubyists.
Source: Active Support Core Extensions (Rails Guides)
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How do getters and setters work?
I'm from the php world. Could you explain what getters and setters are and could give you some examples?
6 Answers
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Choosing between MEF and MAF (System.AddIn)
The Managed Extensibility Framework (MEF) and Managed AddIn Framework (MAF, aka System.AddIn) seem to accomplish very similar tasks. According to this Stack Overflow question, Is MEF a replacement for System.Addin? , you can even use both at the same time.
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What are the differences between a HashMap and a Hashtable in Java?
What are the differences between a HashMap and a Hashtable in Java?
35 Answers
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How to go up a level in the src path of a URL in HTML?
...about relative file paths:
Starting with / returns to the root directory and starts there
Starting with ../ moves one directory backward and starts there
Starting with ../../ moves two directories backward and starts there (and so on...)
To move forward, just start with the first sub directory and...
Should I use Java date and time classes or go with a 3rd party library like Joda Time?
...es from all over the world. One type of data which must be stored is dates and times.
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PDO closing connection
...ber of other reasons. When connecting or running a query, catch any error, and if it is "MySQL has gone away", attempt to connect again or run the query a second time.
– Frank Forte
Dec 14 '17 at 20:50
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Subclipse svn:ignore
...pse. I'm using subclipse for connecting to my SVN. There are some folders and files I would like to add to svn:ignore, but it's grayed out. Is there an easy way to get subclipse to ignore files and directories?
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What are inline namespaces for?
...ief, succinct example of a situation where an inline namespace is needed and where it is the most idiomatic solution?
5 A...