Whether you are spending time in a bar, chatting with friends or a programming language its always handy to have some good one liners. Here, in no particular order, are ten ColdFusion 8 one-liners:

1. Convert an image
ColdFusion converts an image based on the file extension in the source and destination attributes.
<cfimage destination="/misc/cf8.png" source="/misc/cf8.jpg" action="convert">

2. Combine PDFs
Provide a list of pdfs in the source attribute and they will be merged into one pdf.
<cfpdf destination="/misc/my.pdf" source="/misc/file1.pdf,/misc/file2.pdf" action="merge">

3. Create a structure
I love this new feature!
<cfset variables.mystructure="{AL="Alabama",DC="District of Columbia"}>

4. Create an array
Likewise
<cfset variables.myarray=["Homer","Lisa","Bart"]>

5. Loop over an array
Each item of the array gets assigned to the variable in index.
<cfloop index="variables.i" array="#variables.myArray#"></cfloop>

6. Loop over a file line by line
Each line of the file gets assigned to the variable in index. Even better ColdFusion reads the file line by line and does not put the file in memory. CF can now work with huge log files efficiently.
<cfloop index="variables.i" file="/misc/log.txt"></cfloop>

7. Add a RichTextArea
This will show just the basic toolset, replace that with Default, to see all the options. (Underneath this is FCKEditor)
<cftextarea name="comments" toolbar="Basic" richtext="true"></cftextarea>

8. Add a DateField
Produces a input box with a calendar icon and a completely html/JavaScript calendar.
<cfinput id="startdate" name="startdate" type="datefield">

9. Add a ColdFusion Mapping
Within Application.cfc this will add a completely dynamic mapping. I've blogged about this before.
<cfset this.mappings["/mymap"] = getDirectoryFromPath(getCurrentTemplatePath())>

10. Add a Custom Tag Path
Ditto the above for a custom tag path.
<cfset this.customtagpaths="getDirectoryFromPath(getCurrentTemplatePath())">