Deleting Key from Object based on key's existence in another Topic is solved

[Yogi]

Hi there, in this example there are two objects:

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Reference := {"5C" : {"b" : "Banana" , "p" : "Pear"}} 

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testing := {"1a" : {"a" : "Apple" , "b" : "Banana" , "p" : "Pear"}  , "2" :  {"d" : "Dog" , "e" : "Elephant" , "f" : "Frog"}  , "3" :  {"g" : "Goat" , "h" : "Helicopter" , "i" : "Indigo"}}

I want to delete keys from testing.1a if they exist in Reference.5C

Using:

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for k in testing.1a
{
    if reference.5C[k] != ""
        testing.1a.Delete(k)
}

The output is:

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{"1a": {"a": "Apple", "p": "Pear"}, "2": {"d": "Dog", "e": "Elephant", "f": "Frog"}, "3": {"g": "Goat", "h": "Helicopter", "i": "Indigo"}}

It has deleted the key "b" and it's pair value "Banana" but "p" remains. I can't understand why.

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Edit:

Solved by cloning the object here:

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for k in testing.1a.Clone()
{
    if reference.5C[k] != ""
        testing.1a.Delete(k)
}

It doesn't seem to like deleting from the same object it's looping.