Get struct value with default fallback

get.cfm

<!---
    GET Function
    
    Description: Safely retrieves a value from a struct with a default fallback. Returns the value if the key exists, otherwise returns the default value without throwing an error.
    
    Parameters:
        - struct: The struct to retrieve value from (required)
        - key: The key to look up (required)
        - defaultValue: Value to return if key doesn't exist (optional, default: "")
    
    Returns: The value from the struct if key exists, otherwise the default value
    
    Usage:
        <cfset result = get(myStruct, "name", "Unknown")>
        <cfset result = get(userSettings, "theme", "light")>
        <cfset result = get(config, "timeout", 30)>
    
    Examples:
        get({name:"John"}, "name", "Unknown") returns "John"
        get({name:"John"}, "age", 0) returns 0
        get({}, "anything", "default") returns "default"
        get({foo:""}, "foo", "default") returns ""
    
    Author: DeveloperOffice.com
    Language: ColdFusion/Lucee
    License: MIT (https://opensource.org/licenses/MIT)
    Version: 1.0
--->

<cffunction name="get" returntype="any" output="false">
    <cfargument name="struct" type="struct" required="true">
    <cfargument name="key" type="string" required="true">
    <cfargument name="defaultValue" type="any" required="false" default="">
    
    <!--- Check if key exists in struct --->
    <cfif structKeyExists(arguments.struct, arguments.key)>
        <!--- Check if value is null --->
        <cftry>
            <cfset var value = arguments.struct[arguments.key]>
            <cfif NOT isNull(value)>
                <cfreturn value>
            <cfelse>
                <cfreturn javaCast("null", "")>
            </cfif>
            <cfcatch>
                <!--- If accessing causes error, return the value anyway --->
                <cfreturn arguments.struct[arguments.key]>
            </cfcatch>
        </cftry>
    <cfelse>
        <cfreturn arguments.defaultValue>
    </cfif>
</cffunction>