Develop Reference

What is the suffix "-stretch" means in the circleci images?

https://github.com/CircleCI-Public/circleci-dockerfiles/tree/master/openjdk/images
I was looking at the list of available circleci managed images. I noticed some jdk images end with suffix "-stretch".
Question
What does this suffix "-stretch" mean? Is it somehow different from normal jdk (The ones without "-stretch")?

The suffix stretch in tags refer to the version of Debian that image is based on. In this case, Debian 9 "Stretch".

R Shiny DesktopDeployR Stop Logging Error

I am trying to deploy R Shiny App as an Windows Desktop App. So far I have used the framework described at http://blog.analytixware.com/2014/03/packaging-your-shiny-app-as-windows.html and managed to make it work with the help of stackoverflow users (question name "R Shiny as Windows Desktop App Creates Text File With Warning").
An update to this framework has been developed and it has several advantages over the previous one, such as not relying on Google Chrome browser etc. and it is described here: http://oddhypothesis.blogspot.com/2016/04/desktop-deployr.html
All files can be found in the GitHub account of framework creator (link is presented in the description)
I have adjusted the following:
app.R
require(shinyjs,quietly = TRUE,warn.conflicts=FALSE)
require(markdown,quietly = TRUE,warn.conflicts=FALSE)
require(scales,quietly = TRUE,warn.conflicts=FALSE)
require(DT,quietly = TRUE,warn.conflicts=FALSE)
runApp("./app/shiny/", launch.browser=TRUE,quiet=TRUE)
packages.txt
Added the names of the packages I am using
# Primary package dependencies for the application that are loaded during
# startup.
#
# If not available, they will be installed into app/library. Custom source
# packages need to be installed manually.
# bare miniminum: configurations are stored in json format
jsonlite
# if deploying shiny based applications:
shiny
shinyjs
markdown
scales
DT
App does launch, it works. However a new folder is created called log with file error.log, which includes the following:
library paths:
... C:/Users/VoronecI/Desktop/New folder (2)/app/library
... C:/Users/VoronecI/Desktop/New folder (2)/dist/R-Portable/App/R-Portable/library
working path:
... C:/Users/VoronecI/Desktop/New folder (2)
Loading required package: methods
ensuring packages: jsonlite, shiny, shinyjs, markdown, scales, DT
Attaching package: 'shiny'
The following object is masked from 'package:jsonlite':
validate
Attaching package: 'shinyjs'
The following object is masked from 'package:shiny':
runExample
The following objects are masked from 'package:methods':
removeClass, show
Attaching package: 'DT'
The following objects are masked from 'package:shiny':
dataTableOutput, renderDataTable
Is there a way to prevent this logging of the unmeaningful error?
The reason why I want to get rid of it is because I further use Inno Setup Compiler to create .exe and this is not working when I have a log file updating each time I run the app.

As you can see in this file (line 66) https://github.com/wleepang/DesktopDeployR/blob/7c81e72c5beb29bf84ca65fd1d5bb5486caec51a/dist/script/wsf/js/run.js
The command is run as
var strCommand = [Rexe, Ropts, RScriptFile, "1>", Outfile, "2>&1"].join(" ");
which redirects command line outputs (that normally directly print to the screen) to the Outfile. You can change this line to
var strCommand = [Rexe, Ropts, RScriptFile].join(" ");
which will disable the logging. This might have other implications though (you might see a command window for example, I am not too sure but test it out).
Alternatively, you might be able to change this file https://github.com/wleepang/DesktopDeployR/blob/7c81e72c5beb29bf84ca65fd1d5bb5486caec51a/app/config.cfg (line 27) and set
- use_userprofile: true
(you need to uncomment this line, it is currently inside a block comment). This will make sure the log file goes into the user profile folder, and that might also solve your problem.

Ivona, I just finished developing the RInno package which also uses Inno Setup and the DesktopDeployR project to install local Shiny apps, and it will log errors without a problem.
To get started:
install.packages("RInno")
require(RInno)
RInno::install_inno()
Then you just need to call two functions to create an installation framework:
create_app(app_name = "myapp", app_dir = "path/to/myapp")
compile_iss()
If you are interested in other features, check out FI Labs - RInno. I'd be interested to know if turning off the error logging feature is something you would like to add ;)

Using autoprops in eclipse for all files and folders in an svn project

Pre-commit triggers recently introduced to my institution's svn are proving troublesome.
They require every file to have the property:
svn:mime-type=text/plain
svn:eol-style=native
Manually (in eclipse), I can right-click on the Java Project Folder and navigate Team>SetProperty. I then enter the properties listed above one by one ticking apply property recursively to all resources before clicking OK.
I am then able to commit.
This process is arduous and has to be repeated every time a new file is introduced.
As a result, I am keen to implement the use of autoprops within eclipse.
Navigating Window>Preferences>Team>SVN>Properties Configuration, I import the following file:
[auth]
[helpers]
[tunnels]
[miscellany]
enable-auto-props = yes
[auto-props]
*.* = svn:mime-type=text/plain;svn:eol-style=native
This works great for files. However, the settings are not applied to newly created directories.
Any ideas would be appreciated.
Regards.

If you use Subversion 1.8 or newer client then you can start using the svn:auto-props versioned property to set these svn:mime-type, svn:eol-style and other properties automatically. See the following articles:
SVNBook | Inherited Properties & SVNBook | Automatic Property Setting,
Subversion 1.8 Release Notes | Inherited Properties.
This works great for files. However, the settings are not applied to
newly created directories.
The value of auto-props section you have is *.*. The property applies only to files and directories with the name like foo.bar. You can leave just * and the property will apply to all newly-added items.

Ugly swing fonts under ratpoison

I am writing a small application in swing. I am using Ratpoison as my window manager (with wmname LG3D) and Netbeans as IDE. My application fonts when started from KDE or directly from Netbeans look ok. Started from ratpoison they looks like this:
Screenshot http://img195.imageshack.us/img195/8079/swingfontsratpoison.png
Click for full size

KDE is probably adding more fonts to the system when starting up.
Execute this on the KDE and in the ratpoison:
fc-list -v | grep "file:\|fullname:\|^$"
and compare the font list to see what is missing.
If some directory is missing, add it to the /etc/fonts/fonts.conf, in to a new entry.
If just missing some fonts, you can copy then to the ~/.fonts (assuming that you have this dir configures in fonts.conf)
if all fonts are the same, try to move all configs in /etc/fonts/conf.d to a temporary directory and run
fc-cache -f
and test.
if looks better, start adding back one more config, run the fc-cache -f again , restart again the java app and test.
repeat until you found the config that breaks the java fonts. In the end you should have all configs minus the one that breaks the java.
Usually its some config that sets a font as preferred, that java will blindly use, over better fonts.

Actually, you can use any system font in Swing.
Easily, just by adding one sentence: yourComponent.setFont(new Font("Tahoma", Font.BOLD|Font.ITALIC, 16));
Or you can change the overall settings: UIManager.put("label.font", new Font("Tahoma", Font.BOLD, 16));
The "keys" of the put method are usually strings indicating what you want to change like:
label.font, button.font, label.color, textfield.font, etc. All in small cases.
And don't forget to import java.awt.Font AND/OR javax.swing.UIManager at the beginning!

how to overcome this exception

i am using a third part SDK with my java application.The providers of sdk provided me exe file that i installed and one java project.I installed the exefile.
Now when i run the code i get a dialog box showing error
Excepting a absulut path for library AKSSDK.dll
No AKSSDK in java.library.path
could not load load library AKSSDK
how do i resolve it?

You need to run java with the following configuration:
java -Djava.library.path={where your library is}
Note the above is the directory where your library is, not the full path name of the library!

You have to add AKSSDK.dll to your PATH environment variable.
It would look like this:
echo %PATH%
C:\xyz\;C:\other\etc\etc;C:\Your\Path\To\AKSSDK.dll
EDIT
To modify your environment variable you have to go to:
MyComputer/RightClick/Properties/Advanced/EnvironmentVariables
(source: vlaurie.com)
And modify the existing Path under System variables
See this tutorial for more details: http://vlaurie.com/computers2/Articles/environment.htm
I have had problems with the white space of ( Program files ) in the past. If possible install your SDK on something like C:\SondaSDK or C:\You\SondaSDK
That way you shouldn't have problems.

You can manually set the path to this value by starting with
java -Djava.library.path=PATH_TO_LIBRARY