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    1. This table or related slice is empty.
    1. COThere are many garbage collected languages (including Java and C#), so Dart would probably have been garbage collected even if JavaScript wasn't (well, at least if it could still be compiled to efficient JavaScript anyway). Being garbage collected isn't something Dart is sorry about, and not something that's going to change (it's not just "for the time being").
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    2. COA very good reason. Type annotations in Dart are optional, and they are treated as assertions (they are ignored in production mode). That means that a variable does not have a type, so assigning an integer to a variable declared as double must work the same whether the variable is declared double ("double x") or just dynamic ("var x"). This prevents any implicit conversion. In checked mode, the assignment is checked, and since 'int' is not a subtype of 'double', the type assertion fails. You have to do an explicit n.toDouble().
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    3. COJSON doesn't specify the semantics of its number literals, so it's no more correct to use doubles than integers. Dart has two number types. Anything containing a decimal point or an exponential part must be a double, and everything else is parsed as an integer, which in Dart provides more precision than doubles. This preserves as much information from the JSON number as possible. It does require you to manually use .toDouble if you want all the numbers to be doubles.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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