Menu
We can convert Dart List to Map in another way: forEach() method. var map2 = {}; list. forEach((customer) => map2[customer.name] = customer.
List, Set, Queue are iterable while Maps are not. Iterable collections can be changed i.e. their items can be modified, add, remove, can be accessed sequentially. The map doesn't extend iterable.
List<SomeClass> list = list to search; List<String> matchingList = list of strings that you want to match against; list. where((item) => matchingList. contains(item. relevantProperty));
Map<K, V> class Null safety. A collection of key/value pairs, from which you retrieve a value using its associated key. There is a finite number of keys in the map, and each key has exactly one value associated with it. Maps, and their keys and values, can be iterated.
you can use
moviesTitles.map((title) => Tab(text: title)).toList()
example:
bottom: new TabBar(
controller: _controller,
isScrollable: true,
tabs:
moviesTitles.map((title) => Tab(text: title)).toList()
,
),
I'm new to flutter. I found that one can also achieve it this way.
tabs: [
for (var title in movieTitles) Tab(text: title)
]
Note: It requires dart sdk version to be >= 2.3.0, see here
Yes, You can do it this way too
List<String> listTab = new List();
map.forEach((key, val) {
listTab.add(val);
});
//your widget//
bottom: new TabBar(
controller: _controller,
isScrollable: true,
tabs: listTab
,
),
I try this same method, but with a different list with more values in the function map. My problem was to forget a return statement. This is very important :)
bottom: new TabBar(
controller: _controller,
isScrollable: true,
tabs:
moviesTitles.map((title) {return Tab(text: title)}).toList()
,
),
tabs: [...data.map((title) { return Text(title);}).toList(), extra_widget],
tabs: data.map((title) { return Text(title);}).toList(),
It's working fine for me
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With