Dictionary find index of current key

Hi,

i am looping through dictionary like here:

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It is possible to get index of current key?

The idea is to get item not from current dicKey key but from the next key wthihin provided loop.

Example:

dic.add 1, Paul
dic.add 2, Luke
dic.add 3, Jacek
dic.add 4, Piter

So if dicKey = 3 and corresponding item = Jacek, i want to get here Piter (3 key + 1 = 4th key and correspoding item).

Please help,
Best,
Jacek

dic.items()(3)

ok thank you.

so simple i can add counter and know which current key i am looping.

Best,
Jacek

Be aware that since dictionaries can be updated their order cannot be guaranteed. If you need this, you'd be better off using:

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Then referring only to tmp (or a collection)

Also, calling items/keys on a dictionary is slow, so you're better off not doing it in a loop if you have a lot of entries.

thank you Guys,

Kyle123,

what do you mean by:
tmp = dic.Keys()?

you want to create array from dictionary?

their order cannot be guaranteed

ok this is interesting. If i will change dic.items()(3) = "NewName" i can change the order?

Jacek

you want to create array from dictionary?

What do you think that:

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is doing?

It's the same as:

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You're creating an array and referencing it. It's better to create the array once than in the loop

Thank you.

i just wonder how can i change order in dictionary after updating?
I have never done this by accident.

I would like to be prepared for this issue in the future but i have to fully understand this.

dic.items()(3)

this is showing correspoding item to key number = 3

Best,
Jacek

Originally Posted by jaryszek

ok this is interesting. If i will change dic.items()(3) = "NewName" i can change the order?

No, if you use the overwrite method of adding to a dictionary, you update the value at that key, for a fuller description, see:
https://stackoverflow.com/questions/...of-item-insert

It's one of the differences between collections and dictionaries

thank you Kyle123,

interesting link and well explained how overwrite method is working.

Be aware that since dictionaries can be updated their order cannot be guaranteed

sorry but still i do not understand this. So how can i change the order? it is not possible?

Jacek

I changed the topic to not solved.

Or maybe Ali do you want me to create new topic?

Best,
Jacek

Thank you Kyle123,

now i understand. Great example and explanation,

thank you and have a nice day!

Jacek