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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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Using NumberPicker Widget with Strings
Is there a way to use the Android NumberPicker widget for choosing strings instead of integers?
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ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
...cked by some query. For example, you may have executed "select for update" and have not yet committed/rollbacked and fired another select query. Do a commit/rollback before executing your query.
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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 ...
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?
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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...
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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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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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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