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language (dart, the same language used to build flutter’s |
framework). flutter doesn’t ship with a declarative markup. |
we found that UIs dynamically built with code allow for |
more flexibility. for example, we have found it difficult |
for a rigid markup system to express and produce |
customized widgets with bespoke behaviors. |
we have also found that our “code-first” approach better allows |
for features like hot reload and dynamic environment adaptations. |
it’s possible to create a custom language that is then |
converted to widgets on the fly. because build methods |
are “just code”, they can do anything, |
including interpreting markup and turning it into widgets. |
<topic_end> |
<topic_start> |
my app has a debug banner/ribbon in the upper right. why am i seeing that? |
by default, the flutter run command uses the |
debug build configuration. |
the debug configuration runs your dart code in a VM (virtual machine) |
enabling a fast development cycle with hot reload |
(release builds are compiled using the standard android |
and iOS toolchains). |
the debug configuration also checks all asserts, which helps |
you catch errors early during development, but imposes a |
runtime cost. the “debug” banner indicates that these checks |
are enabled. you can run your app without these checks by |
using either the --profile or --release flag to flutter run. |
if your IDE uses the flutter plugin, |
you can launch the app in profile or release mode. |
for VS code, use the run > start debugging |
or run > run without debugging menu entries. |
for IntelliJ, use the menu entries |
run > flutter run in profile mode or release mode. |
<topic_end> |
<topic_start> |
what programming paradigm does flutter’s framework use? |
flutter is a multi-paradigm programming environment. |
many programming techniques developed over the past few decades |
are used in flutter. we use each one where we believe |
the strengths of the technique make it particularly well-suited. |
in no particular order: |
<topic_end> |
<topic_start> |
project |
<topic_end> |
<topic_start> |
where can i get support? |
if you think you’ve encountered a bug, file it in our |
issue tracker. you might also use |
stack overflow for “howto” type questions. |
for discussions, join our mailing list at |
[email protected] or seek us out on discord. |
for more information, see our community page. |
<topic_end> |
<topic_start> |
how do i get involved? |
flutter is open source, and we encourage you to contribute. |
you can start by simply filing issues for feature requests |
and bugs in our issue tracker. |
we recommend that you join our mailing list at |
[email protected] and let us know how you’re |
using flutter and what you’d like to do with it. |
if you’re interested in contributing code, you can start |
by reading our contributing guide, and check out our |
list of easy starter issues. |
finally, you can connect with helpful flutter communities. |
for more information, see the community page. |
<topic_end> |
<topic_start> |
is flutter open source? |
yes, flutter is open source technology. |
you can find the project on GitHub. |
<topic_end> |
<topic_start> |
which software license(s) apply to flutter and its dependencies? |
flutter includes two components: an engine that ships as a |
dynamically linked binary, and the dart framework as a separate |
binary that the engine loads. the engine uses multiple software |
components with many dependencies; view the complete list |
in its license file. |
the framework is entirely self-contained and requires |
only one license. |
in addition, any dart packages you use might have their |
own license requirements. |
<topic_end> |
<topic_start> |
how can i determine the licenses my flutter application needs to show? |
there’s an API to find the list of licenses you need to show: |
if your application has a drawer, add an |
AboutListTile. |
if your application doesn’t have a drawer but does use the |
material components library, call either showAboutDialog |
or showLicensePage. |
for a more custom approach, you can get the raw licenses from the |
LicenseRegistry. |
<topic_end> |
<topic_start> |
who works on flutter? |
we all do! flutter is an open source project. |
currently, the bulk of the development is done |
by engineers at google. if you’re excited about flutter, |
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