Parameter
Description
Determines if at least one value of a key-value pair in a struct satisfies a given condition.
Returns
True if at least one value matches a condition; false, otherwise.
Syntax
structSome(struct, function(key, value [,struct]){} [, parallel] [, maxThreads])
Member function
structObj.Some(callback)
History
ColdFusion (2021 release): Introduced the following parameters:
- parallel
- maxThreadCount
ColdFusion (2018 release) Update 5: Added this function.
Parameters
|
Required/Optional |
Description |
---|---|---|
struct |
Required |
Struct in which at least one value is to be searched. |
callback |
Required |
Function that encapsulates the criteria. |
parallel |
Optional |
(Boolean)- True if you want to enable parallel programming. |
maxThreads |
Optional |
(Int) The number of threads the function can execute. The number of threads must be between 1-50. If the value exceeds 50, there is an exception. |
Example
Example 1
<cfscript> mystruct = {a=1,b=2,c=3}; doesValExist=(key,value,struct)=>return value==1 writeoutput(structSome(mystruct,doesValExist)) </cfscript>
Output
YES
Example 2
<cfscript> structEven={a=2,b=4,c=8,d=10,e=12} isEven=(key,value)=>value%2==0 writeOutput(StructSome(structEven,isEven)) // Returns True </cfscript>
Output
YES
Member function
<cfscript> structEven={a=2,b=4,c=8,d=10,e=12} isEven=(key,value)=>return value%2==0 writeOutput(structEven.Some(isEven)) // Returns True </cfscript>
Member function - Using arrow operator
<cfscript> ordstruct=["key1":"abc","key2":"def","key3":"sss"] lambdaFunc= key => key.contains("key") writeOutput(ordstruct.Some(lambdaFunc)) </cfscript>
Exampe 3 - Named parameters
<cfscript> mystruct={"key1":"aval","key2":"bval","key3":"cval"} result=StructSome(struct=mystruct,callback=function(key,val){ if (key.contains("key1") && val.startswith("a")) return 1 else return 0 } ) writeOutput(result) </cfscript>
Output
YES
Using parallelization
<cfscript> mystruct= Structnew("ordered"); for(i=1;i<=10000;i++){ mystruct.insert("key#i#","val#i#") } function callback(key,val){ if(isObject(val)) return true return false } t_start=GetTickCount() writeoutput(mystruct.some(callback)) t_end=GetTickCount() writeoutput("<br>Time taken with no parallel:" & t_end-t_start) t_start=GetTickCount() writeoutput(mystruct.some(callback,true,5)); t_end=GetTickCount() writeoutput("<br>Time taken with 5 threads:" & t_end-t_start) t_start=GetTickCount() writeoutput(mystruct.some(callback,true,10)) t_end=GetTickCount() writeoutput("<br>Time taken with 10 threads:" & t_end-t_start) t_start=GetTickCount() writeoutput(structsome(struct=mystruct,callback=callback,parallel=true,maxthreadcount=20)) t_end=GetTickCount() writeoutput("<br>Time taken with 20 threads:" & t_end-t_start) t_start=GetTickCount() writeoutput(structsome(struct=mystruct,callback=callback,parallel=true,maxthreadcount=40)) t_end=GetTickCount() writeoutput("<br>Time taken with 40 threads:" & t_end-t_start) </cfscript>
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