What does Foobar mean?

Foobar is a slang term used in the IT world as a placeholder to refer to generic examples or temporary files or programs that are to be deleted. The technical term for a word like foobar is a metasyntactic variable*. These types of terms are used to name variables, programs or other parts of code [1].

It cames from the use of foo in a programming context is generally credited to the Tech Model Railroad Club (TMRC) of MIT.

For instance, a computer science professor may be discussing different file formats. In this case, he would call the generic-example file foo or foobar, then list the extensions associated with the file formats (e.g. foobar.txt, foobar.gif, foobar.exe, foobar.tar).
When foo or foobar is used, everyone understands that these are just examples, and they don't really exist [2].

*A metasyntactic variable is a placeholder name used in computer science, a word without meaning intended to be substituted by some objects pertaining to the context where it is used. Example, the word foo. Read more

References:

Comments

An attempt was made to insert a node where it is not permitted

Do you face this Error while you are writing code to generate xml file from java? Exception in thread "main" org.w3c.dom.DOMException : HIERARCHY_REQUEST_ERR: An attempt was made to insert a node where it is not permitted. at com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.insertBefore(Unknown Source) at com.sun.org.apache.xerces.internal.dom.NodeImpl.appendChild(Unknown Source) at generatexml.WriteXMLFile.main( WriteXMLFile.java:30 ) Well the answer is: Don't insert the node where it isn't permitted. Change your generated directory file path from 'C' to other directory ex, D or to any directory you have. Make sure the ‘appendChild’ is referring to the right element. Don’t appending twice, only make it once. Ex, //Writetoxml.java Element rootElement = doc . createElement ( " Company " ); doc . appendChild ( ro...

Error Class names are only accepted if annotation processing is explicitly requested

Do you get the following error? Class names, 'Hello', are only accepted if annotation processing is explicitly requested 1 error In case you got this error, then you forget to add .java to the file name when you compile it So when you want to compile a file using cmd console window write the filename.java extension Example: Javac Hello.java If you write it in this way the error will go away. So don’t forget to include suffix with your file name during compilation.

Cli.java won't compile in jahmm Problem: When you compile Cli.class in terminal or Eclipse, you may get the following error: Cli.java:27: package be.ac.ulg.montefiore.run.jahmm.io does not exist import be.ac.ulg.montefiore.run.jahmm.io.FileFormatException; ^ Cli.java:54: cannot find symbol symbol : class AbnormalTerminationException 9 more errors Solution: You must to pass parameters to your class. The class takes 5 parameters which are: Parameter 1: should be one of the following: create: creates a new HMM description file, print: prints a HMM learn-kmeans: applies the k-Means algorithm learn-bw: applies the Baum-Welch algorithm generate: generates an observation sequence given a HMM distance-kl: computes the distance between two HMMs Parameter 2: -opdf. It takes one of the following: -r: argument describes that HMM will take 4 integers. For example, -r 4 means that HMM takes ...

Technology

Search This Blog