Logs and troubleshooting
Estimated reading time: 21 minutesThis page contains information on how to diagnose and troubleshoot problems, send logs and communicate with the Docker Desktop team, use our forums and Knowledge Hub, browse and log issues on GitHub, and find workarounds for known problems.
Docker Knowledge Hub
Looking for help with Docker Desktop for Windows? Check out Docker Success Center for knowledge base articles, FAQs, and technical support for various subscription levels.
Diagnose problems, send feedback, and create GitHub issues
In-app diagnostics
If you experience issues for which you do not find solutions in this documentation, on Docker Desktop for Windows issues on GitHub, or the Docker Desktop for Windows forum, we can help you troubleshoot the log data.
Choose > Troubleshoot from the menu.
When the Diagnose & Feedback window initiated, it starts collecting diagnostics. When the diagnostics are available, you can upload them and obtain a Diagnostic ID, which must be provided when communicating with the Docker team. For more information on our policy regarding personal data, see how is personal data handled in Docker Desktop.
If you click on Report an issue, it opens Docker Desktop for Windows issues on GitHub in your web browser in a “New issue” template, to be completed before submission. Do not forget to include your diagnostic ID.
Diagnosing from the terminal
On occasions it is useful to run the diagnostics yourself, for instance if Docker Desktop for Windows cannot start.
First locate the com.docker.diagnose
, that should be in C:\Program
Files\Docker\Docker\resources\com.docker.diagnose.exe
.
To create and upload diagnostics in Powershell, run:
PS C:\> & "C:\Program Files\Docker\Docker\resources\com.docker.diagnose.exe" gather -upload
After the diagnostics have finished, you should have the following output, containing your diagnostic ID:
Diagnostics Bundle: C:\Users\User\AppData\Local\Temp\CD6CF862-9CBD-4007-9C2F-5FBE0572BBC2\20180720152545.zip
Diagnostics ID: CD6CF862-9CBD-4007-9C2F-5FBE0572BBC2/20180720152545 (uploaded)
Troubleshooting topics
Make sure certificates are set up correctly
Docker Desktop ignores certificates listed under insecure registries, and
does not send client certificates to them. Commands like docker run
that
attempt to pull from the registry produces error messages on the command line,
like this:
Error response from daemon: Get http://<IP_ADDRESS>:5858/v2/: malformed HTTP response "\x15\x03\x01\x00\x02\x02"
As well as on the registry. For example:
2017/06/20 18:15:30 http: TLS handshake error from <IP_ADDRESS>:52882: tls: client didn't provide a certificate
2017/06/20 18:15:30 http: TLS handshake error from <IP_ADDRESS>:52883: tls: first record does not look like a TLS handshake
For more about using client and server side certificates, see How do I add custom CA certificates? and How do I add client certificates? in the Getting Started topic.
Volumes
Permissions errors on data directories for shared volumes
Docker Desktop sets permissions on shared volumes
to a default value of 0777
(read
, write
, execute
permissions for user
and for group
).
The default permissions on shared volumes are not configurable. If you are working with applications that require permissions different from the shared volume defaults at container runtime, you need to either use non-host-mounted volumes or find a way to make the applications work with the default file permissions.
Docker Desktop currently implements host-mounted volumes based on Microsoft SMB
protocol, which does not support fine-grained, chmod
control over these permissions.
See also, Can I change permissions on shared volumes for container-specific deployment requirements? in the FAQs, and for more of an explanation, the GitHub issue, Controlling Unix-style perms on directories passed through from shared Windows drives.
inotify on shared drives does not work
Currently, inotify
does not work on Docker Desktop. This becomes evident,
for example, when an application needs to read/write to a container across a
mounted drive. Instead of relying on filesystem inotify, we recommend using
polling features for your framework or programming language.
-
Workaround for nodemon and Node.js - If you are using nodemon with
Node.js
, try the fallback polling mode described here: nodemon isn’t restarting node applications. -
Docker Desktop for Windows issue on GitHub - See the issue Inotify on shared drives does not work.
Volume mounting requires shared drives for Linux containers
If you are using mounted volumes and get runtime errors indicating an application file is not found, access is denied to a volume mount, or a service cannot start, such as when using Docker Compose, you might need to enable shared drives.
Volume mounting requires shared drives for Linux containers (not for Windows containers). Click and then Settings > Shared Drives and share the drive that contains the Dockerfile and volume.
Verify domain user has permissions for shared drives (volumes)
Tip: Shared drives are only required for volume mounting Linux containers, not Windows containers.
Permissions to access shared drives are tied to the username and password you
use to set up shared drives. If you run docker
commands and tasks under a different username than the one used to set up shared
drives, your containers don’t have permissions to access the mounted volumes.
The volumes show as empty.
The solution to this is to switch to the domain user account and reset credentials on shared drives.
Here is an example of how to debug this problem, given a scenario where you
shared the C
drive as a local user instead of as the domain user. Assume the
local user is samstevens
and the domain user is merlin
.
-
Make sure you are logged in as the Windows domain user (for our example,
merlin
). -
Run
net share c
to view user permissions for<host>\<username>, FULL
.> net share c Share name C Path C:\ Remark Maximum users No limit Users SAMSTEVENS Caching Caching disabled Permission windowsbox\samstevens, FULL
-
Run the following command to remove the share.
> net share c /delete
-
Re-share the drive via the Shared Drives dialog, and provide the Windows domain user account credentials.
-
Re-run
net share c
.> net share c Share name C Path C:\ Remark Maximum users No limit Users MERLIN Caching Caching disabled Permission windowsbox\merlin, FULL
See also, the related issue on GitHub, Mounted volumes are empty in the container.
Volume mounts from host paths use a nobrl
option to override database locking
You may encounter problems using volume mounts on the host, depending on the
database software and which options are enabled. Docker Desktop for Windows uses
SMB/CIFS
protocols
to mount host paths, and mounts them with the nobrl
option, which prevents
lock requests from being sent to the database server
(docker/for-win#11,
docker/for-win#694). This is
done to ensure container access to database files shared from the host. Although
it solves the over-the-network database access problem, this “unlocked” strategy
can interfere with other aspects of database functionality (for example,
write-ahead logging (WAL) with SQLite, as described in
docker/for-win#1886).
If possible, avoid using shared drives for volume mounts on the host with network paths, and instead mount on the MobyVM, or create a data volume (named volume) or data container. See also, the volumes key under service configuration and the volume configuration reference in the Compose file documentation.
Local security policies can block shared drives and cause login errors
You need permissions to mount shared drives to use the Docker Desktop for Windows shared drives feature.
If local policy prevents this, you get errors when you attempt to enable shared drives on Docker. This is not something Docker can resolve, since you do need these permissions to use the feature.
Here are snip-its from example error messages:
Logon failure: the user has not been granted the requested logon type at
this computer.
[19:53:26.900][SambaShare ][Error ] Unable to mount C drive: mount
error(5): I/O error Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
mount: mounting //<IP_ADDRESS>/C on /c failed: Invalid argument
See also, Docker for Windows issue #98.
Understand symlinks limitations
Symlinks work within and across containers. However, symlinks created outside of containers (for example, on the host) do not work. To learn more, see Are symlinks supported? in the FAQs.
Avoid unexpected syntax errors, use Unix style line endings for files in containers
Any file destined to run inside a container must use Unix style \n
line
endings. This includes files referenced at the command line for builds and in
RUN commands in Docker files.
Docker containers and docker build
run in a Unix environment, so files in
containers must use Unix style line endings: \n
, not Windows style: \r\n
.
Keep this in mind when authoring files such as shell scripts using Windows
tools, where the default is likely to be Windows style line endings. These
commands ultimately get passed to Unix commands inside a Unix based container
(for example, a shell script passed to /bin/sh
). If Windows style line endings
are used, docker run
fails with syntax errors.
For an example of this issue and the resolution, see this issue on GitHub: Docker RUN fails to execute shell script.
Virtualization
For Docker Desktop to function correctly, your machine must have the following features:
-
Hyper-V installed and working
-
Virtualization enabled
Hyper-V
Docker Desktop requires Hyper-V as well as the Hyper-V Module for Windows Powershell to be installed and enabled. The Docker Desktop installer enables it for you.
Docker Desktop also needs two CPU hardware features to use Hyper-V: Virtualization and Second Level Address Translation (SLAT), which is also called Rapid Virtualization Indexing (RVI). On some systems, Virtualization must be enabled in the BIOS. The steps required are vendor-specific, but typically the BIOS option is called Virtualization Technology (VTx)
or something similar. Run the command systeminfo
to check all required Hyper-V features. See Pre-requisites for Hyper-V on Windows 10 for more details.
To install Hyper-V manually, see Install Hyper-V on Windows 10. A reboot is required after installation. If you install Hyper-V without rebooting, Docker Desktop does not work correctly.
From the start menu, type Turn Windows features on or off and press enter. In the subsequent screen, verify that Hyper-V is enabled:
Hyper-V driver for Docker Machine
The Docker Desktop installation includes the legacy tool Docker Machine which uses the old
boot2docker.iso
, and the Microsoft Hyper-V
driver to create local virtual machines. This is
tangential to using Docker Desktop, but if you want to use Docker Machine
to create multiple local Virtual Machines (VMs), or to provision remote machines, see the Docker
Machine topics. This is documented only for users looking for information about Docker Machine on Windows, which requires that Hyper-V is enabled, an external network switch is active, and referenced in the flags for the docker-machine create
command as described in the Docker
Machine driver example.
Virtualization must be enabled
In addition to Hyper-V, virtualization must be enabled. Check the Performance tab on the Task Manager:
If you manually uninstall Hyper-V or disable virtualization, Docker Desktop cannot start. See Unable to run Docker for Windows on Windows 10 Enterprise.
Networking and WiFi problems upon Docker Desktop for Windows install
Some users may experience networking issues during install and startup of Docker Desktop. For example, upon install or auto-reboot, network adapters and/or WiFi may get disabled. In some scenarios, problems are due to having VirtualBox or its network adapters still installed, but in other scenarios this is not the case. See the GitHub issue Enabling Hyper-V feature turns my wi-fi off.
Here are some steps to take if you experience similar problems:
-
Ensure virtualization is enabled, as described above in Virtualization must be enabled.
-
Ensure Hyper-V is installed and enabled, as described above in Hyper-V must be enabled.
-
Ensure DockerNAT is enabled by checking the Virtual Switch Manager on the Actions tab on the right side of the Hyper-V Manager.
-
Set up an external network switch. If you plan at any point to use Docker Machine to set up multiple local VMs, you need this anyway, as described in the topic on the Hyper-V driver for Docker Machine. You can replace
DockerNAT
with this switch. -
If previous steps fail to solve the problems, follow steps on the Cleanup README.
Read the full description before you run the Windows cleanup script.
The cleanup command has two flags,
-Cleanup
and-ForceDeleteAllSwitches
. Read the whole page before running any scripts, especially warnings about-ForceDeleteAllSwitches
. {: .warning}
Windows containers and Windows Server
Docker Desktop is not supported on Windows Server. Instead, you can use Docker Enterprise Basic at no additional cost.
If you have questions about how to run Windows containers on Windows 10, see Switch between Windows and Linux containers.
A full tutorial is available in docker/labs at Getting Started with Windows Containers.
You can install a native Windows binary which allows you to develop and run Windows containers without Docker Desktop. However, if you install Docker this way, you cannot develop or run Linux containers. If you try to run a Linux container on the native Docker daemon, an error occurs:
C:\Program Files\Docker\docker.exe:
image operating system "linux" cannot be used on this platform.
See 'C:\Program Files\Docker\docker.exe run --help'.
Limitations of Windows containers for localhost
and published ports
Docker Desktop for Windows provides the option to switch Windows and Linux containers. If you are using Windows containers, keep in mind that there are some limitations with regard to networking due to the current implementation of Windows NAT (WinNAT). These limitations may potentially resolve as the Windows containers project evolves.
Windows containers work with published ports on localhost beginning with Windows 10 1809 using Docker Desktop for Windows as well as Windows Server 2019 / 1809 using Docker EE.
If you are working with a version prior to Windows 10 18.09
, published ports on Windows containers have an issue with loopback to the localhost. You can only reach container endpoints from the host using the container’s IP and port. With Windows 10 18.09
, containers work with published ports on localhost.
So, in a scenario where you use Docker to pull an image and run a webserver with a command like this:
> docker run -d -p 80:80 --name webserver nginx
Using curl http://localhost
, or pointing your web browser at
http://localhost
does not display the nginx
web page (as it would do with
Linux containers).
To reach a Windows container from the local host, you need to specify the IP address and port for the container that is running the service.
You can get the container IP address by using docker
inspect
with some --format
options
and the ID or name of the container. For the example above, the command would
look like this, using the name we gave to the container (webserver
) instead of
the container ID:
$ docker inspect \
--format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' \
webserver
This gives you the IP address of the container, for example:
$ docker inspect \
--format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' \
webserver
<IP_ADDRESS>
Now you can connect to the webserver by using http://<IP_ADDRESS>:80
(or simply
http://<IP_ADDRESS>
, since port 80
is the default HTTP port.)
For more information, see:
-
Docker Desktop for Windows issue on GitHub: Port binding does not work for locahost
Running Docker Desktop in nested virtualization scenarios
Docker Desktop can run inside a Windows 10 VM running on apps like Parallels or VMware Fusion on a Mac provided that the VM is properly configured. However, problems and intermittent failures may still occur due to the way these apps virtualize the hardware. For these reasons, Docker Desktop is not supported in nested virtualization scenarios. It might work in some cases, and not in others.
For best results, we recommend you run Docker Desktop natively on a Windows system (to work with Windows or Linux containers), or on Mac to work with Linux containers.
If you still want to use nested virtualization
-
Make sure nested virtualization support is enabled in VMWare or Parallels. Check the settings in Hardware > CPU & Memory > Advanced Options > Enable nested virtualization (the exact menu sequence might vary slightly).
-
Configure your VM with at least 2 CPUs and sufficient memory to run your workloads.
-
Make sure your system is more or less idle.
-
Make sure your Windows OS is up-to-date. There have been several issues with some insider builds.
-
The processor you have may also be relevant. For example, Westmere based Mac Pros have some additional hardware virtualization features over Nehalem based Mac Pros and so do newer generations of Intel processors.
Typical failures we see with nested virtualization
-
Slow boot time of the Linux VM. If you look in the logs and find some entries prefixed with
Moby
. On real hardware, it takes 5-10 seconds to boot the Linux VM; roughly the time between theConnected
log entry and the* Starting Docker ... [ ok ]
log entry. If you boot the Linux VM inside a Windows VM, this may take considerably longer. We have a timeout of 60s or so. If the VM hasn’t started by that time, we retry. If the retry fails we print an error. You can sometimes work around this by providing more resources to the Windows VM. -
Sometimes the VM fails to boot when Linux tries to calibrate the time stamp counter (TSC). This process is quite timing sensitive and may fail when executed inside a VM which itself runs inside a VM. CPU utilization is also likely to be higher.
-
Ensure “PMU Virtualization” is turned off in Parallels on Macs. Check the settings in Hardware > CPU & Memory > Advanced Settings > PMU Virtualization.
Related issues
Discussion thread on GitHub at Docker for Windows issue 267.
Networking issues
Some users have reported problems connecting to Docker Hub on the Docker Desktop stable version. (See GitHub issue 22567.)
Here is an example command and error message:
> docker run hello-world
Unable to find image 'hello-world:latest' locally
Pulling repository docker.io/library/hello-world
C:\Program Files\Docker\Docker\Resources\bin\docker.exe: Error while pulling image: Get https://index.docker.io/v1/repositories/library/hello-world/images: dial tcp: lookup index.docker.io on <IP_ADDRESS>:53: no such host.
See 'C:\Program Files\Docker\Docker\Resources\bin\docker.exe run --help'.
As an immediate workaround to this problem, reset the DNS server to use the
Google DNS fixed address: <IP_ADDRESS>
. You can configure this through the Settings
Network dialog, as described in the topic Network. Docker automatically restarts when you apply this setting, which could take some time.
NAT/IP configuration
By default, Docker Desktop uses an internal network prefix of
<IP_ADDRESS>/24
. Should this clash with your normal network setup, you can change
the prefix from the Settings menu. See the Network topic
under Settings.
Workarounds
inotify
currently does not work on Docker Desktop
If you are using Node.js
with nodemon
, a temporary workaround is to try the
fallback polling mode described here: nodemon isn’t restarting node
applications. See
also this issue on GitHub Inotify on shared drives does not
work.
Reboot
Restart your PC to stop / discard any vestige of the daemon running from the previously installed version.
Unset DOCKER_HOST
The DOCKER_HOST
environmental variable does not need to be set. If you use
bash, use the command unset ${!DOCKER_*}
to unset it. For other shells,
consult the shell’s documentation.
Make sure Docker is running for webserver examples
For the hello-world-nginx
example and others, Docker Desktop must be
running to get to the webserver on http://localhost/
. Make sure that the
Docker whale is showing in the menu bar, and that you run the Docker commands in
a shell that is connected to the Docker Desktop Engine (not Engine from Toolbox). Otherwise, you might start the webserver container but get a “web page
not available” error when you go to docker
.
How to solve port already allocated
errors
If you see errors like Bind for <IP_ADDRESS>:8080 failed: port is already allocated
or listen tcp:<IP_ADDRESS>:8080: bind: address is already in use
...
These errors are often caused by some other software on Windows using those
ports. To discover the identity of this software, either use the resmon.exe
GUI and click “Network” and then “Listening Ports” or in a Powershell use
netstat -aon | find /i "listening "
to discover the PID of the process
currently using the port (the PID is the number in the rightmost column). Decide
whether to shut the other process down, or to use a different port in your
docker app.
Docker fails to start when firewall or anti-virus software is installed
Some firewalls and anti-virus software might be incompatible with Microsoft Windows 10 builds, such as Windows 10 Anniversary Update. The conflict typically occurs after a Windows update or new install of the firewall, and manifests as an error response from the Docker daemon and a Docker Desktop start failure. The Comodo Firewall was one example of this problem, but users report that software has since been updated to work with these Windows 10 builds.
See the Comodo forums topics Comodo Firewall conflict with Hyper-V and Windows 10 Anniversary build doesn’t allow Comodo drivers to be installed. A Docker Desktop user-created issue describes the problem specifically as it relates to Docker: Docker fails to start on Windows 10.
For a temporary workaround, uninstall the firewall or anti-virus software, or explore other workarounds suggested on the forum.
windows, troubleshooting, logs, issues


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|
Robot
The embedded systems for UTRA's autonomous humanoid soccer-playing robot
|
These functions are for initialization of the MPU6050. More...
Functions | |
| void | MPU6050_init (MPU6050_HandleTypeDef *sMPU6050) |
| This function is used as the first step of initialization of an MPU6050_HandleTypeDef struct. More... | |
| void | MPU6050_manually_set_offsets (MPU6050_HandleTypeDef *sMPU6050) |
| This function is used to manually set the offsets of the accelerometer and gyroscope based on empirical measurements taken for this specific sensor. In the future, this could be updated to allow for various MPU6050 devices, each with their own specific offsets. More... | |
| void | MPU6050_set_LPF (MPU6050_HandleTypeDef *sMPU6050, uint8_t lpf) |
| This function allows you to set the value of the LPF manually. Please see https://cdn.sparkfun.com/datasheets/Sensors/Accelerometers/RM-MPU-6000A.pdf for descriptions of what each value does. More... | |
These functions are for initialization of the MPU6050.
| void MPU6050_init | ( | MPU6050_HandleTypeDef * | sMPU6050 | ) |
This function is used as the first step of initialization of an MPU6050_HandleTypeDef struct.
| *sMPU6050 | Pointer to a struct of type MPU6050_HandleTypeDef |
Definition at line 37 of file MPU6050.c.
| void MPU6050_manually_set_offsets | ( | MPU6050_HandleTypeDef * | sMPU6050 | ) |
This function is used to manually set the offsets of the accelerometer and gyroscope based on empirical measurements taken for this specific sensor. In the future, this could be updated to allow for various MPU6050 devices, each with their own specific offsets.
| *sMPU6050 | Pointer to a struct of type MPU6050_HandleTypeDef |
Definition at line 64 of file MPU6050.c.
| void MPU6050_set_LPF | ( | MPU6050_HandleTypeDef * | sMPU6050, |
| uint8_t | lpf | ||
| ) |
This function allows you to set the value of the LPF manually. Please see https://cdn.sparkfun.com/datasheets/Sensors/Accelerometers/RM-MPU-6000A.pdf for descriptions of what each value does.
| *sMPU6050 | Pointer to a struct of type MPU6050_HandleTypeDef |
| lpf | uint8_t between 0 and 7 inclusive |
Definition at line 84 of file MPU6050.c.


Quality trustees from a trusted source
178 Sales and Marketing professionals
312 people from the Financial Services Industry and City
397 from the Home Counties
181 from the North of England
206 people from Central and Local Government
94 from the South West
122 HR professionals
539 people from the Civil Society sector
214 from the Midlands and East Anglia
84 Fundraisers
471 from London
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Case Studies
Case Study 1
Head for Business is a leading enterprise support charity based in South London that believes passionately that enterprise is a life skill. Many of its clients have suffered disadvantage from social exclusion, poverty or unemployment which has prevented them from participating fully in society. Over the past 10 years, Head for Business has supported more than 1,500 people from different backgrounds and all ages to start their businesses.
Click Here to download PDF.
Case Study 2
Bowel cancer is the UK's second biggest cancer killer – with 40,000 people diagnosed each year and a life claimed every half an hour. Set up in 1999, Beating Bowel Cancer is a UK charity dedicated to saving lives of people with bowel cancer.
Click Here to download PDF.
Case Study 3
Financial Controller at British Gas Joins the Board of Christian Aid: Christian Aid is an international development charity that works with over 50 countries around the world to eradicate poverty. Its global mission is to eradicate the causes of poverty and strives to achieve equality, dignity and freedom for all, regardless of faith or nationality. It also provides urgent, practical and effective assistance where need is great, tackling the effects of poverty, as well as its root causes.
Click Here to download PDF.
Case Study 4
Community Options is a London based registered charity providing residential and community support services to people with mental health needs. Its mission is to enable people with mental health needs to work towards recovery and lead valued lives in the community. Its range of services for people with mental health problems include accommodation services for people with mental health needs, as well as the provision of one to one support for people in their own homes.
Click Here to download PDF.
Case Study 5
Thames Hospicecare is an independent charity that provides palliative care for adults with cancer and other life limiting illnesses. Its aim is to achieve the best possible quality of life for each person, their family, friends and carers through its range of In-Patient, Community and Out Patient Services, which it provides free of charge. The organisation is governed by a board of Trustees and run on a day-to-day basis by the Chief Executive, Jacqueline Clarke and the Senior Management Team.
Click Here to download PDF.
Case Study 6
Allergy UK is the leading national charity dedicated to supporting the estimated 21 million allergy sufferers in the UK. It provides a helpline, support network and online forum for people with allergies and food intolerances.
Click Here to download PDF.
Case Study 7
Music of Life, is a small charity providing high quality musical education and performance opportunities for children and young people with disabilities and special needs.
Click Here to download PDF.
Case Study 8
Allergy UK is the leading national charity dedicated to supporting the estimated 21 million allergy sufferers in the UK. It provides a helpline, support network and online forum for people with allergies and food intolerances.
Click Here to download PDF.
Case Study 9
The Royal Blind Society is a national charity that has been helping blind and partially sighted people.
Click Here to download PDF.
Case Study 10
Over the past 10 years, the sales of academic books to libraries have fallen by around 90%. Knowledge Unlatched, a community interest group, was set up in 2012 to change this situation.
Click Here to download PDF.
Case Study 11
Previously WSPA had recruited people through its own networks, and mainly from animal charities, but this recruitment and search process needed to be different and reflect the new organisational structure and mission.
Click Here to download PDF.
Case Study 12
Client: Greensleeves Homes Trust
A number of trustees are standing down this year and the Trust wanted to recruit new trustees to contribute to its future development.
Click Here to download PDF.
Case Study Videos
We have also recorded the experience of two of the trustees we have appointed:
Please click here for video one, and here for video two.


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AboutDialog
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AboutDialog
Create the dialog.
activate(Integer, JTextArea, tableModel)
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Method which activates events
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Main Application class
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Create the application.
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Method calculates average
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Method Findin Min and max
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Frame for drawing a graph
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Tips in the Tip Of The Day window
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Method Sums values in table
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Constructor
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When I saw this tiny LED controller on Taobao for only RMB10 (about $1.60 USD), I had to know what was inside of it. Less than 12 hours after clicking buy, it arrived at our office. Of course, the first thing I had to do was tear it apart to see what was inside.
The first thing to notice is the packaging, or lack thereof.  Note: this is totally something you could do at home, and makes for a quick, dust-free housing. Add some silicone glue around the wires and you’re water resistant, too!
Cutting off the heat shrink cover reveals a minimalist PCB underneath. The top side has pads on the edges with power and data wires (no connectors here!), along with a STC15F101E microcontroller (RMB1.5 on taobao), and a couple of passives. Pretty standard. Note the 2×3 row of vias that make a nice connection between the ground trace on the top of the board to the ground plane on the back.
On the back is an awesome surprise: super cheap buttons!  They’re actually just taped in place, and you can peel them up:
That’s super slick, and probably also super cheap. It probably won’t last forever, either, but we aren’t exactly talking about a luxury product here.
Edit: This style of button is called 锅仔片 (Guō zǎi piàn, or metal dome), and they are also super cheap- around RMB.01 ($.0016 USD) each in quantities of 1000. Thanks, Honghong!
The final step was to hook it up and see if it actually works. This particular controller can only support WS2811-style LED drivers, and I didn’t happen to have any on hand, so I soldered it up to an integrated WS2811 pixel instead. Lo and behold, it lights up and changes color! I’ll have to reserve judgement on the animation quality until I get a full set of strips, but I’m not expecting much more than blinking and color fading patterns from it. Improving this state of affairs is, of course, one of the main reasons that we started Blinkinlabs.


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--- layout: archive title: Zulip Chat Archive permalink: /stream/113488-general/topic/simple.20question.html ---
Can you tell me what is the different when we type:
"
universe u
\alpha : Type u
"
and
"
\alpha: Type*
"
By the way,
I don't know how other people can create alpha symbol in chat message, it appears similarly VS code editor.
Can you tell me the way to write the code that appear as in VS code editor?
use backtick `A`
becomes A
for code snippets use
```lean bla ```
There is almost no difference between
universe u variable α : Type u
and
variable α : Type*
In the first case you give a name to the universe variable so you can refer to it, in the second it is anonymous
there is no magic sauce for producing a α
on chat, I copy paste from vscode
Can we have this magic sauce please? I am getting sick of copy pasting from vscode
``` \alpha : Type
\alpha
lean \alpha
\alpha
Hi, every one,
I am trying to type Greek letter in the message, but I did not manage it.
Just copy it from vscode
Oh, I see.
\alpha
\forall
Do people generally use VSCode for Lean? I do, since it was recommended by my professor, and I like the extension. But sometimes it takes a while to import documents and resolve proof tactics when my file is pretty long. Is this a common issue?
Greg, you should pre-compile your project with leanpkg build
at the command line while in the directory of your project---that way the whole thing won't have to recompile every time you start a new session. If you use mathlib, you can also from the root directory of your project do lean --make _target/mathlib
to pre-compile the whole of mathilib, which will take ages, but will be worth it if you use it often (the previous command only compiles the pieces of mathlib which your project currently uses)
Ah, I see. I do use mathlib, so this is very useful.
Everything should be really speedy after-the-fact!
I got the error "failed to start child process." I assume that has to do with how I've set up my folders? I'm not familiar with Windows, as before I started needing Windows-exclusive software I was only using Linux. How would I go about fixing this?
Ah, I think this is due to how you are invoking your copy oflean
---there is not very good support currently for leanpkg
on windows.  My suggestion regarding the direct lean --make
should still work though I think
okay, great. That's really annoying, but at least --make is still usable. Thank you so much.
I never compile mathlib -- I download precompiled versions
I am getting sick of copy pasting from vscode
Some browser add-ons let you use an external text editor to type in text fields on web pages.
what is an emetric space?
so let me say that I don't know, but I can guess
because "e" usually stands for "extended"
and in the context of the real numbers this usually means "add +infinity or +-infinity"
for example ennreal
means "extended non-negative reals"
ok thx
which is
so my guess is that an emetric space allows
just looking in mathlib, surprised to see gromov hausdorff distance
mathlib is full of surprises
That arrived only a few weeks ago IIRC
Sebastien Gouezel put it there I think
{% endraw %}Last updated: Apr 24 2020 at 19:02 UTC


V
- the type of elements (vertices) in this graphW
- the type of edge weights in this graphpublic interface WeightedGraph<V,W> extends Graph<V>
Graph.Edge<V>
| Modifier and Type | Method and Description |
|---|---|
boolean |
addEdge(V tail,
V head,
W weight)
Adds an edge with the specified weight from the specified tail element to
the specified head element.
|
W |
getWeight(V tail,
V head)
Returns the weight of the edge from tail to head if the edge exists and
has an associated weight, or null otherwise.
|
W |
setWeight(V tail,
V head,
W weight)
Sets the weight of the edge from tail to head to the specified weight.
|
addEdge, addVertex, clear, containsEdge, containsVertex, getAdjacentElements, getNumberOfEdges, getNumberOfVertices, getVertices, isEmpty
boolean addEdge(V tail, V head, W weight)
tail
- the tail vertexhead
- the head vertexweight
- the weight of the edgejava.lang.NullPointerException
- if one or more of the arguments are null and this graph does
not permit null valuesjava.lang.IllegalArgumentException
- if some property of one or more of the arguments prevents the
edge from being added to this graphjava.lang.IllegalStateException
- if the edge cannot be added at this time due to insertion
restrictionsW getWeight(V tail, V head)
tail
- the tail vertexhead
- the head vertexjava.lang.NullPointerException
- if one or both of the specified elements are null and this
graph does not permit null elementsW setWeight(V tail, V head, W weight)
tail
- the tail vertexhead
- the head vertexweight
- the weight of the edge to setjava.lang.NullPointerException
- if one or more of the arguments are null and this graph does
not permit null valuesjava.lang.IllegalArgumentException
- if some property of one or more of the arguments prevents the
weight of the edge to be set


This data is collected by analysing data from two spreadsheets: A-Z Sources Search and Authentication progress tracking. When adding new partners to those sheets please ensure that their partner name is the same in both. EBSCO is an exception (the script fixes that one internally).
The data only counts partners with "Yes" in their Proxy or Bundle columns. Answers such as 'Maybe' or 'Likely' are not counted.
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{% if results %}
{% for result in results %}
{{ result }}
{% endfor %}
{% else %}
Periodical count has either not yet been calculated, or the file was deleted.
{% endif %}
{% endblock %}


--- layout: post status: publish published: true title: '"That makes sense with Kurt Russell." - Episode 7.21' author: display_name: Corey Fineran login: Corey email<EMAIL_ADDRESS>url: '' author_login: Corey author_email<EMAIL_ADDRESS>wordpress_id: 11208 wordpress_url: http://ivyenvy.com/?p=11208 date: '2015-05-20 21:57:36 +0000' date_gmt: '2015-05-21 02:57:36 +0000' categories: - Podcast tags: [] comments: [] ---
We only have one Cubs game to talk about on this mid-week episode of the podcast...so we don't! The Cubs had an off-day on Monday and are playing late games on the west coast. This episode was recorded before the Cubs/Padres game on Wednesday night.
Since we don't have a lot of game action to talk about on this episode, we instead focus on the prospects. Since we are a month and a half into the season, we look at how the top 10 prospects in the Cubs system are doing this season.


Japan likely to skip first hearing in South Korea 'comfort women' lawsuit
SEOUL – The central government isn’t planning to attend the first hearing on a lawsuit seeking damages from Japan for former “comfort women” in South Korea, to be held Wednesday, informed sources said Tuesday.
Comfort women is a euphemism for women who worked at wartime Japanese brothels, including those who did so against their will, to provide sex to Japanese soldiers.
Strained tensions between Japan and South Korea could deteriorate further depending on how the trial goes.
According to media reports, 20 people, including former comfort women, filed the lawsuit with Seoul Central District Court, demanding the Japanese government pay some 3 billion won (about ¥282 million) in compensation.
The plaintiffs claimed that the 2015 bilateral agreement to resolve the comfort women issue “finally and irreversibly” did not discuss Japan’s responsibility for its inhumane wrongdoing.
The suit was filed in late 2016, but the start of the trial was postponed by the district court after Japan refused to participate in the case.
In March this year, the district court made public the complaint and related documents, a legal step that presumes the documents have been conveyed to the Japanese government, enabling the court to start the trial in May or later.
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Toyota Motor Corporation: is a Japan-based company mainly engaged in the auto industry and business financial
company operates through three business segments.
For more information, please visit this side link text
| Model | Year interduced | Vehicle information |
|---|---|---|
| Century | 1967 | Traditional Flagship model. |
| Crown Majesta | 1991 | Modern Flagship model. |
| Crown | 1955 | Divided into Royal and Athlete model. |
| SAI | 2009 | Successor of Progres and Previs. |
| Mark x | 2004 | Successor of Mark II. |
| Premio | 2001 | Successor of Corona. |
Road Sign Assist helps ensure drivers are kept informed,
even if they have driven past a road sign without noticing.
RSA identifies signage such as speed limits, no overtaking
warnings and road conditions and the signs
used on motorways, and displays the information on
a colour TFT multi-information screen
ALL YOU NEED TO KNOW ABOUT TOYOTA ENGINE PROBLEMS →
IT DOESN'T HAVE PROBLEM👍
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-
HomeKit Accessory Simulator is an app that communicates with an iOS device the same way an actual HomeKit Accessory would, so that developers can test functionality while developing iOS apps that use the HomeKit API.
-
HomeKit Accessory Simulator supports creating accessories with services, and adding characteristics to those services. HomeKit Accessory Simulator also supports pairing with a device, changing values, and receiving changed values. HomeKit API uses HomeKit Accessory Protocol (HAP) to communicate with the accessories.
-
HomeKit Accessory Simulator can simulate 4 types of accessories:
- Bluetooth LE Accessories, accessories that talk over Bluetooth LE
- IP Accessories, accessories that talk over Internet Protocol(IP)
- Bridge Accessories, accessories that act as an interface between HAP and accessories talking over other transport protocols like ZigBee or Z-Wave.
- Bridged Accessories, accessories communicating with HomeKit API using Bridge accessories.


My name is Danilo Assis and i have a Computer Science master degree, since 2014. I was graduated at UFPB - Federal University of Paraiba, in João Pessoa. I have been working in some accessibility projects since 2009, developing technology on back-end and also on front-end projects. I have experience developing with C++, Java, Python, Blender, HTML, CSS, Javascript, Django and PHP, using Laravel 5 framework. Recently, I have been working as a manager team at LAVID (Digital Video Applications Laboratory), developing a Libras Acessibility Solution to brazilian government, called VLibras.
Now i'm a full stack developer of Assista Tecnologia and there i work with Ruby on Rails developing solutions and applying the best practices of community.
It's a pleasure to meet you. Be confort to send me an email, if you want ;)
This project i managed is a set of solutions for acessibility. We developed soluctions for many platforms, like web browser plugins, Windows, Linux, Android, IOS. We created also two other tools to generating video translations and mixing with the original video. The last one is called Wikilibras and the user can choose simple options and in the end contribute with the generated signal to the community.
You can see more information og these systems in the websites below.
The main goal of this software is generate accessibility from text. Initially, the user submits the text and the system makes an async call to translate this content to Brazilian Sign Language and after generate a video of signs, which is created using an 3d cartoon avatar.
You can find me also on social networks. Try the links below. See you.


COLORS
PATTERNS
CLEAR
pallete
Beach
Forest
Tropics
mode
Controlled
Random Lines
Madness
Mirror
Swirl
Horizontal
hide menu
Touch anywhere to begin drawing.
Press space to show/hide menu (desktop).


@(message: String, style: String = "scala")
@defining(play.core.PlayVersion.current) { version =>
Select a data source to connect to from the below list
-
CSV file
-
Parquet
-
MongoDB
-
Cassandra
-
JDBC
-
Couchbase (alpha)
-
Elasticsearch (alpha)
- CSV schema extractor only accepts path to the exact CSV file, not the folder where it is stored.
- To allow Parquet schema extraction, you have to set the value for pathToParquetToolsJar in 'application.conf' (see the Docs).
}


Git, GitHub, & Version Control
Jan 3, 2016
What exactly is version control? And what is this "git" thing everyone keeps talking about? Well, version control lets you keep different copies of your projects (versions) so that you can make changes to your heart's content without worrying about permanently screwing something up. Imagine if you were writing a paper, and every time you saved your work was as a different version (ie. paper_v1, paper_v1.2, etc). That way, if you decided that you didn't like a certain paragraph and wanted to retype it, you could do so. Then if you change your mind later, all your previous work is saved for you, instead of lost to oblivion.
Git is simply a great tool for version control. You install it on your system, and through a series of relatively simple commands you can create different versions of your code. This is done by separating your work into a tree-like structure, breaking your versions into a trunk (the master copy) and its branches (literally called branches). By creating a new branch, you can make changes to your code, add or modify directories and files, or delete unwanted items without affecting the core of your project. Once changes are made and double and triple checked, you can merge them back into your master (or another branch).
Another tool at your disposal is a hub for a multitude of repositories handled with git. GitHub, as it's called, keeps your committed repositories on the cloud and allows for sharing between different individuals and groups. People can help you spot errors, you can use bits of open source code as a foundation for your own projects, or you can collaborate with others to produce software. It's easy to use, open to anyone, and widely used by developers.


{% extends "general.html" %} {% load static %} {% load markdownify %} {% block title %}{{ corpus.name }}: {{navbar}}{% endblock %} {% block content %}
View the digitised collection of 19th century Swiss legal texts
Generate high-quality, interactive charts and heatmaps showing frequencies or keyness of words, lemmata, or grammatical features
View search results in their immediate context, to get a better understanding of what they mean
Submit improvements to the automatic transcription of the collection


Using Git like a Pro
I wrote a Git tutorial a while ago and share it on the GitHub. Now I would like to share it again here on my website.
To see some of my other notes, please have a look at my programming-notes.
Table of Contents
- Git vs GitHub vs GitLab
- Set up your Git
- Basic commands
- Review a repo's history
- Add commit to a repo
- Tagging, branching, merging
- Experiments using checkout
- Undoing changes
- Collaborating and syncing with GitLab
- Other useful commands
- Development pipeline, branching model and discussion
Appendix
A. Git Bash setup B. Cygwin setup
1. Git vs GitHub vs GitLab
Figure 1‑1: Icon of Git, Github and GitLab.
Git is a very powerful tool that every developer should be familiar with.
By far, the most widely used modern version control system in the world today is Git. Git is a mature, actively maintained open-source project originally developed in 2005 by Linus Torvalds, the famous creator of the Linux operating system kernel. A staggering number of software projects rely on Git for version control, including commercial projects as well as open-source. Atlassian.com
However, many people confuse Git with Github, GitLab, but they are not the same. Git is a free and open-source distributed version control system, a tool that you can manage your code history. Where Github and GitLab are web-based hosting services for Git repositories. With Git, you don't even need Internet access, you can work everything locally and have all version controls. To connect to GitLab and working with others, you will need Internet access. The purpose of this document is to guide readers through all the necessary elements and commands of using Git, so readers will be able to use Git confidently, and in the proper way.
More discussion about Git and Github can be found here in the Stack Overflow.
Here are some nice free tutorials you can find online too:
- Official Git documentation.
- Learn Git with Bitbucket Cloud.
- Udacity: Version Control with Git and How to Use Git and Github.
- Learn Enough Git to Be Dangerous.
- Try Git: Git Tutorial.
2. Set up your Git
In this chapter, you are going to set up your Git environment in Windows, Mac or Linux. In Linux and Mac, using the default terminal should be just fine. In windows, you can use Git Bash or Cygwin (See appendix A and B). After the installation, run the command which shows in Figure 2-1 and sees if you have Git installed properly.
Figure 2‑1: To see the Git version from the terminal.
Figure 2‑2: Attachment files
Figure 2‑3: git terminal setup
To make your terminal console more git-friendly, you can copy-paste the folder
from attachment to your root directory, and copy the content of .bash_profile
to your .bashrc or .bash_profile in the root directory too. (Figure 2-2).
And after copying and pasting those files and file contents, type $ source
.bashrc
. Then you should see something like Figure 2-3 later when you work
with git.
You should do those configuration commands below before start using git. It is also important to set up your favourite editor first so you won't get panic when annoying vi pop out later (I am sorry for vi users lol). For beginners, I will suggest using nano or other editors with GUI. (Those strings with the brown colour you should replace whatever makes sense to you. Blue are comments, don't type it in your terminal.)
- $ git config --global user.name "Git Rock" - $ git config --global user.email<EMAIL_ADDRESS>- $ git config --global color.ui auto - $ git config --global merge.conflictstyle diff3 - $ git config --global core.editor "emacs -nw" # (vi is default setting) - $ git config --list # (to see your git configurations.)
Before moving on to the next chapter, take a look at all key terms describe here.
3. Basic commands
If you would like to use git as your version control, the first thing you would
have to do is to initialize the git in your project folder with git init
command. After git is initialized, you will see a hidden .git folder in your
directory, see Figure 3-1. This is where git store all its information about
your code version. And remember, do not modify anything in this .git
directory unless you know what you are doing, they are hidden for good
reasons.
Figure 3‑1: list directory after before and after initialize git.
And one important thing is that try to use $ git status
all the time
or after each command. It always shows you some hints about what you should
do when something goes wrong.
The following commands are some of the most basic commands that you will use very often, I will explain other commands later, I just list them here so you can check the most basic commands after finishing this tutorial.
- $ git init - $ git clone https://github.com/GeneKao/udacity-build-a-portfolio-site.git - $ git status # (Please use it all the time!) - $ git log - $ git add - $ git commit - $ git diff
4. Review a repo's history
In this chapter, you will learn how to use commands such as $ git log
with
different flags to see all commit history from the repo. (Tips for readers not
familiar with the command line. Whenever you are in the
less) command environment, which you
will see ":" on the bottom-left corner, press B and space
to go one page up and down. Press J and K to scroll up and down. Q
to quit.)
Let's clone an existing repo to learn from professional developers. To clone
this repo you can type $ git clone
https://github.com/nvie/gitflow.git
to make a copy of existing repo and $
cd gitflow
to move to the directory.
Now you can type one of the most commonly used commands $ git log --oneline
--graph --all
in your terminal, this will list all the commits and branches
like in Figure 4-1.
Figure 4‑1: list all commits and branches using git log --oneline --graph --all
If you want to see more about all commits you can use to $ git log --stat
or $ git log --patch
to show all the details. Or you can use different flags
like --after, --author, --grep, -S
to constrain or to filter the git
information that you want. Try out all those commands and see what kind of
information you will get:
- $ git log --online - $ git log --stat - $ git log -p, git log --patch - $ git log --oneline --decorate --graph --all - $ git log --after="2017-10-1" - $ git log --after="yesterday" - $ git log --after="2017-10-1" --before="2017-10-1" - $ git log --author="Vincent" - $ git log --grep="bugs" - $ git log -- md # (check changes only for README) - $ git log -S"Hello World" # (any file that string was modified) - $ git show
If you would like to see more detail documentation of those optional flags
type$ git log --help
.
And don't forget, you can always type your command together with the SHA to
print the specific commit. For example, by typing $ git show b72a395
you will see all detail commit information include the lines have been modified
and line numbers, see Figure 4-2.
Figure 4‑2: git show one commit by specifying its SHA.
5. Add commit to a repo
Basically, in Figure 5-1 you can see a diagram of how Git works. Let's focus on all local Git functions first. To begin with, three major components of Git are working directory, staging index and repository. Simply speaking, working directory is where all your current files are which includes tracked, untracked and ignored files, staging index is a cache of files that you would like to commit and the repository is where all Git store all snapshots of your code.
Figure 5‑1: Diagram of Git work directory, staging index and repo
To create a commit to the repo, basically you will need to do it in two steps:
1. $ git add md #(or $ git add . to add everything under current directory.) 2. $ git commit -m "add a readme file"
What we have done here is add a file that we would like to commit and move it from working directory to staging index. Assuming we have other files still in the directory. If we do the commit now, only the change of readme file will be recorded to the repository.
By the way, it is better not to use the word "and" in the one Git commit, because normally it just makes more sense to separate tasks into two commits.
For more details, I will suggest the reader go through this online course Version Control with Git, this course explains clearly the concept of the working directory, staging index and repo. Figure 5-1 shows the summarized diagram, and useful comments are listed below. (Just ignore the stash command for now or you can try it on your own. I will explain git stash in the next edition.)
- $ git config -global core.editor emacs # (Configure your favourite editor) - $ git add # (put them in staging index / stage files) - $ git commit -m "your comment" # (commit staged files to repo) - $ git diff - $ git stash # (make your code WIP and try something else) - $ git stash pop # (reverse the stash or git stash apply) - $ git stash list - $ git stash save "Add style to our site" - $ git stash show - $ git log --oneline --graph stash@{1} - $ git stash branch add-stylesheetstash@{1} - $ git stash drop stash@{1} - $ git stash clear # (Set up .gitignore file)
Figure 5‑2: git stash
6. Tagging, branching, merging
When you want to create a separated development, you can create the branch.
You can imagine this as actual tree branches. You store all your different
development in different branches so they are separated from each other. So
let's create a branch called develop by typing $ git branch develop
.
Then if you type $ git branch --list -all
you will see all
branches, and the * symbol indicates the current development branch you are at,
and the default branch is master. By switching between different branches you
need to type $ git checkout develop
. One thing amazing is that all
your files switch automatically whenever you switch between branches. By doing
this, you can experiment different kinds of stuff and don't need to worry
about messing up your correct code or to back up all your previous development
files.
After you modify your separated development, you can use Git merge to merge one branch with another branch. Normally Git will merge it automatically unless two branches have modified the same lines, then you will have to manually fix them.
- $ git tag -a v1.0 (create) - $ git tag -a v1.0 a87984 (create) - $ git tag -d v1.0 (delete) - $ git branch (check) - $ git branch dev_frontend =git checkout -b dev_frontend - $ git branch -d dev_frontend (delete) - $ git checkout dev_frontend - $ git checkout dev_frontend43s20r - $ git checkout dev_frontendmaster - $ git merge dev_frontend
7. Experiments using checkout
You can not only experiment with your code using different branches and switch between them by using git checkout, but also switch to your previous commit or specific files.
- $ git checkout dev\_frontend # (branch) - $ git checkout 43s20r # (commit) - $ git checkout 43s20rpy # (file) - $ git checkout HEADpy # (go back)
8. Undoing changes
To modify the commit, you can type $ git commit --amend
to modify the last
commit. To delete commits use $ git reset
, and it has three different
flags. Mixed is to move the commit back to the working directory, and this is
the default flag. Soft is to move commit to staging index. Hard is to move
commit to trash directly, so be careful to use it. When you better not use reset
on the public repo, because this will mess up other people's development.
 Don't use it in Public History) - $ git reset --mixed HEAD~1 # (move to the working directory, this is the default, add and commit) - $ git reset --soft HEAD~1 # (move to staging index, commit) - $ git reset --hard HEAD~1 # (move to trash, deleted)
9. Collaborating and syncing with GitLab
After having some commits, you might want other people to join your development
or back up the code on GitHub or GitLab. By doing this, you must set up the
connection between your local repo and remote repo. To see the connection you
can type $ git remote -v
and use $ git remote add remote
YourRemoteURL
to set the connections. And $ git pull
to download all
the changes and $ git push origin mater
to upload your repo.
More information to see GitHub documentation (GitLab is more or less the same).
- $ git remote - $ git fetch - $ git pull - $ git push
10. Other useful commands
- $ git diff-tree --no-commit-id --name-only -r d51488d # (list all files changes in a commit) - $ git ls-tree --name-only -r d51488d # (list all files in a commit)
11. Development pipeline, branching model and discussion
I will suggest using gitflow to managing your version and big software development. You can also install it on the command line so everything become so easy.
Check the official repository on GitHub:
https://github.com/nvie/gitflow
- $ git flow init - $ git flow feature start feature/dev-gk-responsive - $ git flow feature finish feature/dev-gk-responsive - $ git flow feature publish feature/dev-gk-responsive - $ git flow feature pull remote feature/dev-gk-responsive
Appendix
A. Git Bash setup
Installation procedure for using git bash as Linux VM connector:
https://git-for-windows.github.io/
Create a .profile in the home directory like:
alias q="exit" alias dir="ls -al" alias vm="ssh -i ~/.ssh/id_rsa_np new_user@YOUR_IP" function cd { builtin cd "$@" && dir } # Interactive operation... alias rm='rm -i' alias cp='cp -i' alias mv='mv -i' # Default to human-readable figures alias df='df -h' alias du='du -h' # Misc :) alias less='less -r' # raw control characters alias whence='type -a' # where, of a sort alias grep='grep --color' # show differences in colour alias egrep='egrep --color=auto' # show differences in colour alias fgrep='fgrep --color=auto' # show differences in colour # Some shortcuts for different directory listings alias ls='ls -hF --color=tty' # classify files in colour alias dir='ls --color=auto --format=vertical' alias vdir='ls --color=auto --format=long' alias ll='ls -l' # long list alias la='ls -A' # all but . and .. alias l='ls -CF' # # Enable tab completion source ~/.git-terminal-config/git-completion.bash # Change command prompt source ~/.git-terminal-config/git-prompt.sh # colors! red="\[\033[38;5;203m\]" green="\[\033[38;05;38m\]" blue="\[\033[0;34m\]" yellow="\[\033[1;33m\]" gray="\[\033[1;30m\]" reset="\[\033[0m\]" export GIT_PS1_SHOWDIRTYSTATE=1 # '\u' adds the name of the current user to the prompt # '\$(__git_ps1)' adds git-related stuff # '\W' adds the name of the current directory export PS1="$red\u$yellow\$(__git_ps1)$green \W $ $reset" # Set Git language to English #alias git='LANG=en_US git' alias git='LANG=en_GB git' # Set Git language to English #alias git='LC_ALL=en_US git' alias git='LC_ALL=en_GB git'
In git bash, run the following commands:
B. Cygwin setup
This is nothing to do with the Git setup. It is just how we setup the Cygwin, and with this documented you can save your time googling around.
1. First install cygwin 32 bit, because some function don't work in 64 bit.
2. Download the file from "rawgit.com/transcode-open/apt-cyg/master/apt-cyg"
3. Copy apt-cyg file to /bin in your C:\cygwin\bin
4. Run "chmod +x /bin/apt-cyg" to make sure that apt-cyg is executable.
5. $ echo 'export http_proxy=proxy:8080'>>~/.bashrc # to make sure that proxy settings.
6. $ echo 'export https_proxy=proxy:8080'>>~/.bashrc
7. Use the original package manager to install wget first.
8. Everything should be fine at this moment, try "apt-cyg install nano"
9. You can also use apt-cyg searchall to search packages.
Dependency for x please see https://x.cygwin.com/docs/ug/setup.html
To install python inside cygwin see https://github.com/h2oai/h2o-2/wiki/Installing-Python-inside-Cygwin


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Working through Garbage Collectors
A small talk in Hyderabad JUG on Garbage Collectors. Challenges, Solutions and many more.
Java Memory Model
TA small glimpse of Java Memory Model.
Debugging Streams and Good Practices
Working through Streams Implementation, Debugging and many more ...
Working with Garbage Collectors
A small talk in Hyderabad JUG on Garbage Collectors. Challenges, Solutions and many more.
An inside view of Streams And Lazy Evaluation
A small talk on Streams and its Lazy Evaluation. For serious parties, please read the references in the presentation.
Live Java Heap, Compact String, Value Types, Reactive Micro-services by Vert.X
A small presentation today in Bangalore JUG
Presentation on Java SafePoints by Fairoz Matte
A safepoint means that all threads need to reach a certain point of execution before they are stopped.
JVM Optimizations in Java9
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Towards a better parallelism
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Working with Java class loaders
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Welcome to Java9
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Pattern Matching in Java
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Working through Modularity
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Troubleshooting Memory Problems in Java Applications
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Runtime Code Generation
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Java - Cloud And Container Ready
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Java Mission Control & Java Flight Recorder
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
JMC & JFR in JDK 9 Labs
The Java keynote was IMHO the best one in years, with plenty of great announcements and interesting content.
Loop Strip Mining Optimization in Hotspot C2 Just In Time Compiler
The Java keynote was IMHO the best one in years, with plenty of great announcements and interesting content.
Graal - How to use the new JVM JIT compiler in real life
The Java keynote was IMHO the best one in years, with plenty of great announcements and interesting content.
Kotlin and Runtime Compilers
The Java keynote was IMHO the best one in years, with plenty of great announcements and interesting content.
Understanding ZGC
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Data Structure and Algorithms
It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions.
Inheritance, Overriding, and Hiding
Inheritance in Java is a mechanism in which one object acquires all the properties and behaviors of a parent object.


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Mangkukulam
Mangkukulam or bruha (from Spanish: bruja, "witch") are witches, wizards, bruho (Spanish:brujo, "wizard, male witch"), or sorcerers who cast evil spells to humans. This bewitcher is also called manggagaway.
They are witches that cast evil spells to cause harm to human and/or plagues. They use a doll (Booddoo Doll) with a hair strand on it then cast spells to for a curse.
The Mangkukulam (/mahng-khu-khu-lam/) is the Filipino version of witch or sorcerer, the name deriving from the word kulam. Other terms are brujo ('bruho' for warlocks) and bruja ('bruha' for witches ), which are from the Spanish language. The verb kulamin (/koo-lah-min/) means "to place a hex". And a curse in Filipino is a sumpa (/soom-pah/).
Appearance
Superstitious folks still attribute certain illnesses or diseases to kulam. This most often happens in the provinces, where an herbal doctor, albularyo (/al-boo-lar-yoh/), treats them. In some rural provincial areas, people completely rely on the albularyo for treatment.
Capabilities
The mangkukulam recites spells and mixes potions. Modern influences have transformed popular perception so that the mangkukulam now also uses the equivalent of a doll. The mangkukulam'scurses is mitigated by finding him/her and giving bribes.
The Mangkukulam uses dark magic.
The difference between a mambabarang and a mangkukulam is that the mambabarang uses magical insects to bring harm to his victims. These insects are released after incantations, when they will search for their supposed victim and burrow under the skin, impregnating her. After some time, matruculans return to the house to kill the pregnant mother, open her abdomen, and eat the growing fetus.


Sutable Crops in Jalgaon
The major crops produced in the district are banana (Jalgaon is the top banana producer in Maharashtra), cotton, sorghum, wheat, millet, lime, peanut, and sugarcane..
Banana is cultivated primarily for food and secondarily for the production of fibre used in the textile industry. Bananas are vigorously growing, monocotyledonous herbaceous plants. The cultivars vary greatly in plant and fruit size, plant morphology, fruit quality and disease and insect resistance. Most bananas have a sweet flavor when ripe; exceptions to this are cooking bananas and plantains.
favorable soil and climate-
Well drained loamy soils are suitable for banana cultivation. Alkaline and saline soils should be avoided.
Watering Frequency-
Banana is a water-loving plant. After banana plantation the soil should not be allowed to dry completely. Drip irrigation is most ideal for banana cultivation. Irrigation requirement of banana under drip irrigation varies from 5 l/d to 18.6 l/d/plant at early and peak growth stages of the plant respectively. The frequency of drip irrigation can be daily or alternate days.
Kharif Season
Climate: It thrives well at a temperature between 25° to 32°C but below 16°C is not good for the crop
Soil: Sorghum adapte wide range of soils but growth wll in sandy loam soils having good drainage. Soil ph range of 6 to 7.5 is ideal.
Rubby Season
October (Beg) to December (End)
Period:-Sowing
Climate: The ideal teamperature range for ideal germination of wheet 20C to 25C though seed can be germinate in the temperature 3.5C to 35C.
Soil Requirement: wheet is grown in wide range of soils in india. Soils with a loamy texture or clay loam, and moderate water holding capacity are best for wheat cultivation.
Sugarcane is widely grown in india. Sugarcane plants spread along human migration to asia and the indian subcontainet Climate Condition:- it is a long duration crop and thus is encounter to all season viz. rainy, winter, summer during its life cycle. The sugarcane pant grows best in tropical hot sunny area. The long warm growing season with the high incidence of solar radiation and adequate moisture(rainfall) the plants uses from 148 to 300g of water produce 1.0g of dry substance.
Bajara is popular to known as "pearl millet" and belong to the family of graminea. This grain is basically originated from india and africa . Bajra is coarse grain crop and considered th be the poor man's staple nourishment and sutable to cultivate in dry lands.
Climate requirement: Bajra grows well in dry and warm climatic conditions and it's drought tolerant crop which require loq annual rainfall range between in 40cm to 60cm. Ideal temperature for bajra cultivation in between 20°C to 30°C


The ff-set attribute allows an end user to set a value when clicking a element, typically used with <a> and <button> elements. Important: If the target value does not exist, an error will occur causing other aspects of your web page not to work. A value exists if it is in firebase or in an element like <input>.
Click the above links and notice the value change in the Firebase emulator. Firebase's security prevents myValue from being set to a non-number.
Click the above buttons and notice the value change in the Firebase emulator. Firebase's security can prevents setText from being set to anything but alpha or beta.


A DataSource is creeated from the array of employees.
A filter is applied to the DataSource where the full name contains "John" and the title starts with "Senior".
Finally, the DataSource is sorted by age in ascending order.


Drag the list items over the dustbin, and drop them to have the bin eat the item one two three four five


{% extends "_errors.site-errors" %} {% set error_name = '404 - Page Not Found' %} {% block error_message %}
The page you requested does not exist on {{ Site.config('site_name') }}. Please check the url again.
If you believe this is an error, contact us and we will look into it as soon as possible.
{% endblock error_message %}


The USA released greenhouse gases equivalent to \(6.34*10^9\) metric tons of CO2 in 2021 [<IP_ADDRESS>]. Figure 5.10.1 shows where those emissions come from.
Which sector accounts for the largest part of emissions? How many millions of metric tons of CO2 equivalent gases does that sector emit?
Which sector accounts for the smallest part of emissions? How many millions of metric tons of CO2 equivalent gases does that sector emit?
How could we use the information in this graph to prioritize laws, regulations, and other changes to reduce greenhouse gas emissions?


A progress bar can be created by using the ux-progress-bar
component. Custom content can be added to the
bar by adding HTML inside the ux-progress-bar
tag.
Additional contextual information can be provided to screen readers by adding an aria-valuetext
attribute
to the ux-progress-bar
.
The following attributes can be used to configure the appearance and behavior of the progress bar:
max
value to determine the width of
the bar.
The following code can be used to create the example above:


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MY ABOUT ME
HELLO I AM CLYDE BLEDSOE I AM A FUTURE SOFTWARE ENGINEER.  I WOULD SIT AT THE TABLE AT HOME AND LOOK AT CODE ALL DAY UNTILL I COULD NOT READ ANYMORE.I WANTED TO TEACH MYSELF SOMETHING THAT I FELT WAS FOR ME AND THAT IS FOR ME.


OrderGroove, New York
Director, SRE, Engineering Productivity and Security
Manager, SRE and Engineering Productivity
Senior Software Engineer, Engineering Productivity
OrderGroove helps brands and omnichannel retailers practice and achieve Relationship Commerce, shifting consumer interactions from one-and-done transactions to ongoing relationships.
- Migrate monolith applications and microservices from Rackspace to GCP
- Standardize CI/CD using Kubernetes
- Lead DevOps Transformation
- Continuous Deployments using ArgoCD


nodprof
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results
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{{entry.time}}
profile
heap
fork me on
github


Using Tensorflow.js, we're able to use deep learning to detect objects from your webcam!  (Trust me, we can't afford the servers to store/process your data)
Yes! Check out it out on ModelDepot!
Real-time object detection is a challenging task, and most models are optimized to run fast on powerful GPU-powered computers with optimized code. Most of us don't have super fast GPUs (especially if you're browsing on mobile) and Tensorflow.js can't take full advantage of our computer's GPUs.
We're using Tiny YOLO, a ML model that's been converted to work in Tensorflow.js.


{% load i18n %} {% get_language_info_list for LANGUAGES as languages %} {% if settings.USE_MODELTRANSLATION and languages|length > 1 %} {# hide submit button if browser has javascript support and can react to onchange event #}


SPLICE:
Standards, Protocols, and Learning Infrastructure for Computing Education
Welcome to the home of the SPLICE project. Our mission is to support the CS Education community by supplying documentation and infrastructure to help with adopting shared standards, protocols, and tools. In this way we hope to promote
- development and broader re-use of innovative learning content that is instrumented for rich data collection;
- formats and tools for analysis of learner data; and
- best practices to make large collections of learner data and associated analytics available to researchers in the CSE, data science, and learner science communities.
Need technical assistance? If you need some help getting LTI to work with your application, or similar technology, our community might be able to give advice.
- Take a look at our tutorials
- Join the SPLICE Google Group, and ask the community.
- See our live catalog of smart learning objects, along with information on how to use them in your course. (Note: To see the catalog, you will need to register for an account on this site if you don't already have one.)
- See our Glossary for commonly used terms related to CS Education research and technology.
For a fuller description of our vision and goals, see the overview from our successful NSF proposal.
Recent News and Upcoming Events
- April, 2023: Following the successful conclusion to our 8th SPLICE workshop on March 15 in Toronto, we have created some new working groups on Smart Learning Content Protocols, Parsons Problems Interoperability Standards, and Large Language Models. See the Working Groups section below for details.
- August, 2022: NSF's CISE Community Research Infrastructure (CCRI) program has awarded a second grant to support the SPLICE project! "An Infrastructure for Sustainable Innovation and Research in Computer Science Education" supports the continued collaboration of University of Pitssburgh (Peter Brusilovsky), CMU (Ken Koedinger), Virginia Tech (Cliff Shaffer), North Carolina State University (Thomas Price and Tiffany Barnes). For more details, see here.
Previous Associated Workshops
- The Eighth SPLICE Workshop on Technology and Data Infrastructure for CS Education Research in conjunction with SIGCSE 2023 in Toronto on Wednesday, March 15, 2023.
- 5th Educational Data Mining in Computer Science Education (CSEDM)Virtual Workshop @ EDM 2021, June 29th, 2021.
- Third Workshop on Intelligent Textbooks (iTextbooks) at AIED 2021, The 22th International Conference on Artificial Intelligence in Education, June 15, 2021.
- Seventh SPLICE Workshop at SIGCSE 2021 (Virtual event), March 15-16: "CS Education Infrastructure for All III: From Ideas to Practice"
- Sixth SPLICE Workshop at L@S 2020 (Virtual event), August 12, 2020: "Building an Infrastructure for Computer Science Education Research and Practice at Scale"
- 4th Educational Data Mining in Computer Science Education (CSEDM) Virtual Workshop @ EDM 2020, July 10, 2020.
- Second Workshop on Intelligent Textbooks @ AIED 2020, July 6, 2020.
- Fifth SPLICE Workshop at ICER 2019, August 11, 2019, in Toronto: "Computing Science Education Infrastructure: From Tools to Data"
- 3rd Educational Data Mining in Computer Science Education (CSEDM) Workshop @ AIED 2019, June 25, 2019.
- 2nd Educational Data Mining in Computer Science Education (CSEDM) Workshop @ LAK2019, March 5, 2019.
- Fourth SPLICE Workshop at SIGCSE 2019, February 2019 in Minneapolis: "CS Education Infrastructure for All II: Enabling the Change"
- Third SPLICE Workshop, August 2018 in Espoo, Finland: "Computing Science Educational Infrastructure: Crossing the Borders"
- 1st Educational Data Mining in Computer Science Education (CSEDM) Workshop @ EDM2018, July 15, 2018
- Second SPLICE Workshop, February 2018 in Baltimore: "CS Education Infrastructure for All: Interoperability for Tools and Data Analytics"
- First SPLICE Workshop, June 2017 in Pittsburgh: "Community-building or data-intensive computer and computing science education infrastructure research"
SPLICE Working Groups
- Smart Learning Content Protocols. Leaders: Cay Horstmann, Steve Edwards. Google Group.
- Parsons Problems Interoperability Standards. Leader: Cliff Shaffer and [need some more!]. Google Group.
- Large Language Models. Leader: Juho Leinonen. Google Group.
- Small Code Snapshots (ProgSnap). Leaders: Thomas Price and Ayaan Kazerouni.
- Programming Exercise Markup Language (PEML). Leaders: Phill Conrad, Cory Bart, and Stephen Edwards.
- Packaging Curricular Materials. Leaders: Cory Bart, Phill Conrad, Michael Hilton, Bob Edmison.
- Interoperable Data Collection. Leaders: Michael Yudelson.
Resources
- SPLICE Google group
- Repositories
- Documentation
- Best Practice Examples
- Administrative Policy
This section provides a collection of resources related to many non-technical issues that CS Education researchers and systems builders have to deal with. This includes things like:- University Educational Data Access policies
- Hosting information
- Examples of IRB Protocols
- HECVAT, VPAT and similar security/privacy statement examples
- Project scale-up and lifecycle examples
Standards Documentation
Project Support
- SPLICE is supported by the National Science Foundation and by Virginia Tech's Technology-enhanced learning and Online Strategies unit (see more).


Basic Combo
Click the right arrow button to show drop down panel that can be filled with any content.


Reports unnecessary type conversions.
Type conversions are unnecessary when the argument type of a string(), number(), or
boolean() function is already the same as the function's return type or if
the expected expression type is any. Suggests removing the unnecessary conversion.


org.apache.shiro.crypto.hash
Interface HashService
- All Known Subinterfaces:
- ConfigurableHashService
- All Known Implementing Classes:
- DefaultHashService
public interface HashService
A HashService
hashes input sources utilizing a particular hashing strategy.
A HashService
sits at a higher architectural level than Shiro's simple Hash
classes: it allows
for salting and iteration-related strategies to be configured and internalized in a
single component that can be re-used in multiple places in the application.
For example, for the most secure hashes, it is highly recommended to use a randomly generated salt, potentially
paired with an configuration-specific private salt, in addition to using multiple hash iterations.
While one can do this easily enough using Shiro's Hash
implementations directly, this direct approach could
quickly lead to copy-and-paste behavior. For example, consider this logic which might need to repeated in an
application:
int numHashIterations = ...
ByteSource privateSalt = ...
ByteSource randomSalt = randomNumberGenerator
.nextBytes();
ByteSource combined = combine(privateSalt, randomSalt);
Hash hash = Sha512Hash(source, combined, numHashIterations);
save(hash);
In this example, often only the input source will change during runtime, while the hashing strategy (how salts
are generated or acquired, how many hash iterations will be performed, etc) usually remain consistent. A HashService
internalizes this logic so the above becomes simply this:
HashRequest request = new HashRequest.Builder().source(source).build();
Hash result = hashService.hash(request);
save(result);
- Since:
- 1.2
computeHash
Hash computeHash(HashRequest request)
- Computes a hash based on the given request.
Salt Notice
If a salt accompanies the return value
(i.e. returnedHash.getSalt()
!= null
), this
same exact salt MUST be presented back to the HashService
if hash
comparison/verification will be performed at a later time (for example, for password hash or file checksum
comparison).
For additional security, the HashService
's internal implementation may use more complex salting
strategies than what would be achieved by computing a Hash
manually.
In summary, if a HashService
returns a salt in a returned Hash, it is expected that the same salt
will be provided to the same HashService
instance.
- Parameters:
request
- the request to process
- Returns:
- the hashed data
- See Also:
Hash.getSalt()
Copyright © 2004-2014 The Apache Software Foundation. All Rights Reserved.


There are many city guards and a secret service around! The Assassin Guild doesn't accept the orders at this time. Try to come later when the situation becomes quieter.


Ruins & Raiders
quick reference
Attribute checks
- The attribute check is the fundamental mechanic of the game: 2d6 + Trait/Skill
- This is compared to the opponent's trait + 7 or a challenge level set by The Adversary.
- The difference between the trait check and the challenge level is the margin of success or failure (mox for short).
- A roll of 2 is an automatic failure.
- A roll of 12 is an automatic success with a minimum mox of 1.
- If a situation does not require a roll (because success is trivial), then the character's trait level is the mox.
Combat
- Combat is handled by dividing time and space into discrete units.
- Time is measured in rounds. Each round is six seconds in duration.
- Space is measured in spaces. Each space is an area two meters across.
-
Characters have a number of combat values based on their traits, gifts, and equipment:
- Movement is equal to Athlete + 10. The character's encumbrance and armor penalty are subtracted from this.
- The Trait or Skill check used for offense is based on the type of attack.
- Missile weapons use Archer.
- Hand-to-hand and thrown attacks use Warrior.
- Mage spells use Intellect.
- Sorcerer spells use Presence.
- Dodge is equal to 7 + Athlete - armor penalty.
- Parry is equal to 7 + Warrior + weapon defense.
- Defiance is equal to 7 + max(Intellect or Intuition).
- Protection is equal to Fortitude + armor.
- To attack a foe, the player rolls his Offense vs the defense of the target (Dodge or Parry, whichever is higher).
- On a hit, damage is calculated by adding the mox of the attack roll to the attacker's Brawn and weapon power. Subtracting the target's Fortitude and armor gives the number of wounds inflicted.
-
Characters normally get two actions per round. One or both can be sacrificed for bonuses:
-
One action:
- Aim: +3 to the next attack
- Defend: +3 to Dodge and Parry for the round
- Haymaker: +10 damage to the next melee attack
- Resist: +3 to Defiance
- Look: +3 to Perception
-
Two actions:
- Cast a Mage or Sorcerer spell
- Total Defense: +6 to Dodge and Parry
- Total Defiance: +6 to Defiance
- Watch: +6 to Perception
Injury
- Wounds represent physical damage. A person who has ten or more wounds is incapacitated and may die.
- Shocks represent mental damage caused by psionic attacks or psychological trauma. A person who has ten or more shocks is bordering on madness and may lose his mind for good.
Fortune
- Improve a Trait and Skill check: sacrifice 1-5 points of Fortune for an equal bonus to a roll.
- Haste: sacrifice up to 5 points of Fortune for an equal bonus to initiative.
- Run like the wind: sacrifice up to 3 Fortune for an equal number of spaces in a movement action.
- Rapid attack: sacrifice 3 Fortune to make two attacks with a single action.
- Absorb Wounds and Shocks: a player may use Fortune to absorb wounds and shocks: 1 point of Fortune per point of damage avoided.
- Heal: Adventurers with the Mystic gift may burn Fortune to heal themselves and others, 1 point per wound or shock healed.
- Increase supernatural power: A player may sacrifice Fortune to power a spell, 1 point of Fortune for 1 point of energy.
Spells
- Use of a spell takes a full round. The caster may do nothing else except move one space.
- Every spell requires a certain amount of energy. A Mage or Sorcerer may increase the intensity, range, area, or duration of a spell by expending extra energy.
- A spell user's base power level is the amount of energy he can channel per round: 10 + Willpower
- A caster may gain extra energy for a spell by sacrificing Fortune, taking extra time, or inflicting damage on himself.


Speak out: 23/11/2019
by DHNSYoga Guru Baba Ramdev said his statements on Periyar E V Ramaswamy were being manipulated to mislead the dalits on social media. The hashtag, #ArrestRamdev, began trending on Twitter on Sunday after Baba Ramdev in a recent TV interview had declared that the followers of social activist Periyar E V Ramaswamy were following intellectual terrorism.