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Quiz #2 [message #57780]

Mon, 13 December 2021 15:55

mirek
Messages: 14162
Registered: November 2005

Ultimate Member

What is the difference between

VectorMap<int, String> vm;
...
for(const auto& m : vm) ...

and

VectorMap<int, String> vm;
...
for(const auto& m : ~vm) ...

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Re: Quiz #2 [message #57781 is a reply to message #57780]

Mon, 13 December 2021 17:18

Oblivion
Messages: 1143
Registered: August 2007

Senior Contributor

1. Enumarates the values in the vm.
2. Enumaretes the key-value pairs in the vm (as KeyValueRef struct - a very handy feature!)?

Smile

Best regards,
Oblivion

Github page: https://github.com/ismail-yilmaz
upp-components: https://github.com/ismail-yilmaz/upp-components
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

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Re: Quiz #2 [message #57782 is a reply to message #57781]

Mon, 13 December 2021 17:21

mirek
Messages: 14162
Registered: November 2005

Ultimate Member

Oblivion wrote on Mon, 13 December 2021 17:18

1. Enumarates the values in the vm.
2. Enumaretes the key-value pairs in the vm (as KeyValueRef struct - a very handy feature!)?

Best regards,
Oblivion

Correct. There is also a slight difference with handling Unlinked items - first variant includes them, second one skips them.

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Re: Quiz #2 [message #57859 is a reply to message #57781]

Wed, 22 December 2021 09:44

Xemuth
Messages: 387
Registered: August 2018
Location: France

Senior Member

The number 2 is clever ! I can't count how many time I did this:


for(const auto& m : vm.GetKeys())
...

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