User defined functions (UDF's) are made available to your code in one of two ways - they are either typed directly into the CFM file in which they are used, or they are put into libraries (CFM files containing one or more UDF's and nothing else) which are then included using . From a code reuse...
With the introduction of ColdFusion 5 and user defined functions you'll be seeing lots of new functions in ColdFusion code. So how to tell if a function is a BIF (Built In Function) or a UDF (User Defined Function)? Use the new IsCustomFunction() function, pass it a function name (not in quotes)...
Working with dates and times in multiple time zones? Then you may want to normalize those dates to simplify comparisons and other operations. The DateConvert() function converts dates and times to and from Universal Coordinated Time (or UTC). You can also use GetTimeZoneInfo() to obtain information...
Within user defined functions (UDF's) there is often the need to initialize variables, saving strings or complex data in them. If there is a chance that a UDF will be called more than once per request, consider putting these variables in the REQUEST scope and initialize them just once (checking...
ColdFusion log files grow rapidly making browsing them slow and tedious. Using the Log Files screen in the ColdFusion Administrator you may delete log files (so that a new one is created when needed), or archive them (saving them with an alternate extension so that you may browse them later if...
ColdFusion embeds debug output at the bottom of generated pages, and this output is typically restricted by requester (client) IP address. If you have a static IP address (perhaps because you are using DHCP) then you'll need to turn on (and off) debugging each time you obtain a new address. The...
The ColdFusion Administrator now includes extensive context-sensitive help. To access this help, simple click the help icon at the top right of every Administrator screen. (Applies to: ColdFusion 5)
ColdFusion caches data source connections to improve data access performance. To release all cached connections for all data sources (forcing them all to be reopened) go to the ColdFusion Administrator Connection Summary page, and click the Release button. (Applies to: ColdFusion 5)
is used to flush the generated output buffer sending content to the client application on demand. In doing so, ColdFusion must also send all page headers with the first call, and any tags that manipulate headers may therefore not be used after that first . So, among others, no , no , and even no ....
If you have ever found yourself building and appending data to variables incrementally, take a look at the new tag. Simply specify a variable name, and anything in between and is saved to that variable, even if you are using others tags and functions. (Applies to: ColdFusion 5)