Comments (2)
I'm not having any issue setting a default value of []
(which evaluates to the empty string). Here's my test:
import launch
def generate_launch_description():
return launch.LaunchDescription([
launch.actions.DeclareLaunchArgument(name='foo_arg', default_value=[]),
launch.actions.ExecuteProcess(
cmd=['echo', launch.substitutions.LaunchConfiguration('foo_arg')],
output='screen'
)
])
Can you please provide a complete launch script that reproduces the issue?
from launch_ros.
@mganglb Friendly ping. If you are still experiencing this error, please comment with more information and we can re-open this issue.
from launch_ros.
Related Issues (20)
- Is it possible to pass namespace of ComposableContainer? HOT 1
- Accessing numerical parameter causes exception
- Setting name parameter leads to duplicate nodes with same name HOT 1
- YAML-parameters won't read correctly for two or more composable nodes with non-empty root namespace HOT 2
- Get content of topic from `launch_testing_ros::WaitForTopics` HOT 6
- `WaitForTopics`: there is no way to manually trigger a topic HOT 8
- `WaitForTopics`: exit() methods should not reraise the passed-in exception HOT 1
- Component Containers on Different ROS_DOMAIN_IDs Fail to Launch HOT 1
- --ros-args argument is always present in Node HOT 1
- ComposableNodeContainer and respawn=True HOT 14
- FeatureRequest: Add type hints to launch_testing_ros examples. HOT 6
- Logger does not respect RCUTILS_CONSOLE_OUTPUT_FORMAT HOT 3
- SetParameter does not propagate into event handler callback HOT 1
- Simpler substitution for package files HOT 2
- Environment variables not set for actions inside RosTimer
- Consider providing user control of log file base names
- Support loading 'arbitrary' YAML files (perhaps just from the XML/YAML front-ends?) HOT 1
- Error when setting parameter with list of strings via substitution HOT 3
- String parameter with digits and `E` or `e` (e.g. "123E5") is always interpreted as double HOT 1
- feat: Adding a prefix option to node launch HOT 4
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from launch_ros.