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Check if a key exists #2191

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Check if a key exists#2191
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kind: questionsolution: proposed fixa fix for the issue has been proposed and waits for confirmation

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@tawmoto
tawmoto
opened on Jun 15, 2020

Hi,

Is there a method to check if a key exists? Other than using .at() and catching the exception?
Sometimes I get a field named error in the json response and I would like to check it also.

Thanks.

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  1. tawmoto
    added
    kind: question
    on Jun 15, 2020

  2. nlohmann commented on Jun 15, 2020

    @nlohmann
    nlohmann
    on Jun 15, 2020
    Owner

    There is a contains(key) member function.

  3. nlohmann
    added
    solution: proposed fixa fix for the issue has been proposed and waits for confirmation
    on Jun 15, 2020

  4. tawmoto commented on Jun 15, 2020

    @tawmoto
    tawmoto
    on Jun 15, 2020
    Author

    contains(key)

    Great, I don't know how I missed it. I was searching for "exists" or smth. :-)
    Thanks a lot!

  5. tawmoto
    closed this as completedon Jun 15, 2020
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