Dictionary comparison not returning correct output

Question

I am facing a weird issue when comparing two arrays of dictionary type. As in the code attached, I have two arrays of dictionary from which I am converting one of them to be similar to other one using foreach loop. I am pretty much sure that output after conversion is same as "array1" in code snippet. 
 But, still their comparison returns {false, false, false} as output of it. And, when I run the commented comparison below, it returns {true, true, true}. 
 Why direct comparison is returning correct output but not the output from foreach besides the fact that formats and outputs are exactly same. 
 
 a!localVariables(
 local!array1: {
 { value1: "abc", value2: "cde" },
 { value1: "fty", value2: "yui" },
 { value1: "uiu", value2: "dft" }
 },
 local!array2: {
 { value1: "abc", value2: "cde", value3: "gdh" },
 { value1: "fty", value2: "yui", value3: "hyu" },
 { value1: "uiu", value2: "dft", value3: "kol" }
 },
 local!convertedArray2: a!forEach(
 items: local!array2,
 expression: {
 value1: fv!item.value1,
 value2: fv!item.value2
 }
 ),
 local!convertedArray2 = local!array1
 /*local!array1 = local!array1*/
)

Stefan Helzle · Accepted Answer

I am not really surprised. Dictionaries have some edge cases. This is why Appian recommends to use maps instead. 
 https://docs.appian.com/suite/help/23.4/parts-of-an-expression.html#dictionaries 
 Your code works great when using maps. 
 a!localVariables(
 local!array1: {
 a!map( value1: "abc", value2: "cde" ),
 a!map( value1: "fty", value2: "yui" ),
 a!map( value1: "uiu", value2: "dft" )
 },
 local!array2: {
 a!map( value1: "abc", value2: "cde", value3: "gdh" ),
 a!map( value1: "fty", value2: "yui", value3: "hyu" ),
 a!map( value1: "uiu", value2: "dft", value3: "kol" )
 },
 local!convertedArray2: a!forEach(
 items: local!array2,
 expression: a!map(
 value1: fv!item.value1,
 value2: fv!item.value2
 )
 ),
 local!convertedArray2 = local!array1
 /*local!array1 = local!array1*/
)

Dictionary comparison not returning correct output

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