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Encyclopedia > Fuse (programming)

A fuse is where the work of a Fusebox web application is done. They are small separate files that are called by the Fusebox to do one and only one task. Fuses start with dsp_, lay_, act_ or qry_ to separate out the display, layout, CFML and SQL parts of the code.


Display fuses (dsp_ prefix) and Layout fuses (lay_ prefix) are the only fuses that can present output to the client. Some CFML tags such as CFOUTPUT and sometimes CFIF are allowed, but the idea is to restrict these fuses to mainly HTML. This allows graphics and Web designers to edit them more easily than typical CF heavy files. Note the display may be in regular HTML for a browser, or WML for a WAP phone, or XML for a web service. In the latter cases Fusebox does not add any white space to your output, which saves many headaches when creating web services.


Action fuses (act_ prefix) on the other hand only contain CFML and cannot display output. They however may assemble data for display into variables that are used in later dsp_ files. This focus on CFML by action fuses eases debugging and reusability.


Query fuses (qry_ prefix) also can not display output, but unlike action fuses they are for SQL queries and other record set producing tags such as CFDIRECTORY. In addition to the query tag they might also use CFPARAM and CFQUERYPARM to validate their arguments but no other CFML processing. Keeping all the queries in one file type makes it easy to hand off SQL to a DBA for optimization or conversion to stored procedures. In fact some Fuseboxers use a fake query generating tag called CF_QuerySim(www.halhelms.com) to generate result sets even before the database design is complete!


Enternal links

Fusebox organization (http://www.fusebox.org)


Fusebox conference (http://www.cfconf.org/fusebox2004/)


  Results from FactBites:
 
Fuse - Wikipedia, the free encyclopedia (271 words)
Fuse (hydraulic) — a device used in hydraulic systems to prevent against sudden loss of fluid pressure.
Fuse (explosives) — a trigger for an explosive device.
FUSE (linux) — the Filesystem in Userspace Linux kernel module; it used to be part of the A Virtual Filesystem (AVFS) project but now has its own project on sourceforge.
Patent 4538245: Enabling circuit for redundant word lines in a semiconductor memory array (6371 words)
In order to program the storage device, a potential is applied to the control gate such that charge carriers are transported between the semiconductor substrate and the floating gate, whereupon the threshold voltage in the channel region established between the spaced-apart source and drain regions is modified.
Programming or reading of a particular storage device, or set of storage devices where bit lines 8 are divided into interleaved groups, is initiated by applying a digital address signal A.sub.0, A.sub.1.
Specifically, inasmuch as redundancy decoder programming is an activity generally performed by the memory manufacturer, inadvertent or accidental reprogramming of redundancy decoder 36 can be prevented with a sufficient degree of reliability by implementing a rigorous programming control procedure during the redundancy decoder programming phase of the manufacturing operation.
  More results at FactBites »


 
 

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