24 lines
750 B
Plaintext
24 lines
750 B
Plaintext
:sig
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void DValue::each(std::function<void (const DValue& item, String key)> f) const
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:params
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f : callback invoked for each child, or once for a scalar value
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return value : none
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:see
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0_DValue
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2_DValue_map
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2_DValue_filter
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2_DValue_is_list
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:content
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Iterates a `DValue` without modifying it. References are dereferenced before iteration.
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For map-shaped values, the callback receives each child and its key. List-shaped maps iterate in numeric index order (`0`, `1`, `2`, ...); ordinary maps iterate in `std::map` string-key order. Scalar values invoke the callback once with the current value and an empty key.
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```cpp
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rows.each([&](const DValue& row, String key) {
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print(key, ": ", row.get_by_path("title").to_string("Untitled"), "\n");
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});
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```
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