StructEvery

StructEvery

Išči

某些 Creative Cloud 应用程序、服务和功能在中国不可用。

Description

Determines if all values of a struct satisfy a given condition.

Returns

True if all values match a condition; false, otherwise.

Syntax

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StructEvery(struct,callback)

Member function

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structObj.Every(callback)

History

New in ColdFusion (2018 release) Update 5: Added this function.

Parameters

Parameter

Required/Optional

Description

struct

Required

Struct in which all values are to be searched.

callback

Required

Function that encapsulates the criteria.

Example

Example 1

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<cfscript>
    mystruct = {a=1,b=2,c=3};
    doesValExist=(key,value,struct)=>return value!=1
    writeoutput(structEvery(mystruct,doesValExist)) // Returns False
</cfscript>

Output

NO

Example 2

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<cfscript>
    structEven={a=2,b=4,c=8,d=10,e=12}
    isEven=(key,value)=>return value%2==0
    writeOutput(StructEvery(structEven,isEven)) // Returns True
</cfscript>

Output

YES

Member function

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<cfscript>
    structEven={a=2,b=4,c=8,d=10,e=12}
    isEven=(key,value)=>return value%2==0
    writeOutput(structEven.Every(isEven)) // Returns True
</cfscript>

Example 3 - Named parameters

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<cfscript>
    mystruct={"key1":"aval","key2":"aval1","key3":"aval2"}
    result=StructEvery(struct=mystruct,callback=function(key,val){
        if (val.startswith("a"))
              return 1
        else
              return 0
            }
    )
    writeOutput(result)
</cfscript>

Output

YES

Arrow function

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<cfscript>
    ordstruct=["key1":"abc","key2":"def","key3":"sss"]
    lambdaFunc= key => key.contains("key")
    writeoutput(ordstruct.Every(lambdaFunc))
</cfscript>

Output

YES