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Global and local variables in R
...ou can have a look at these two links for understanding how to use them:
http://stat.ethz.ch/R-manual/R-devel/library/base/html/environment.html
http://stat.ethz.ch/R-manual/R-devel/library/base/html/get.html
Here you have a small example:
test.env <- new.env()
assign('var', 100, envir=test...
Android canvas draw rectangle
...tentView(new MyView(this));
}
For more details you can visit here
http://developer.android.com/reference/android/graphics/Canvas.html
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Keeping ASP.NET Session Open / Alive
...
I use JQuery to perform a simple AJAX call to a dummy HTTP Handler that does nothing but keeping my Session alive:
function setHeartbeat() {
setTimeout("heartbeat()", 5*60*1000); // every 5 min
}
function heartbeat() {
$.get(
"/SessionHeartbeat.ashx",
n...
How can I rethrow an exception in Javascript, but preserve the stack?
...a bug in Chrome. Rethrowing an exception should preserve the call trace.
http://code.google.com/p/chromium/issues/detail?id=60240
I don't know of any workaround.
I don't see the problem with finally. I do see exceptions silently not showing up on the error console in some cases after a finally,...
Connecting to Azure website via FTP
...eofyoursite"
userPWD="sOmeCrYPTicL00kIngStr1nG"
destinationAppUrl="http://nameofyoursite.azurewebsites.net"
SQLServerDBConnectionString=""
mySQLDBConnectionString=""
hostingProviderForumLink=""
controlPanelLink="http://windows.azure.com">
<databases/>
</publ...
How can I temporarily disable a foreign key constraint in MySQL?
... ON DELETE SET NULL //add back other constraint
Have a read of this (http://dev.mysql.com/doc/refman/5.5/en/alter-table.html) and this (http://dev.mysql.com/doc/refman/5.5/en/create-table-foreign-keys.html).
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How can sbt pull dependency artifacts from git?
... git:// protocol syntax doesn't seem to work for me in play/sbt 13.0. https:// works though. This might also be caused by a git specific setting.
– Sebastian Graf
Jan 11 '14 at 19:57
...
Opacity of background-color, but not the text [duplicate]
...web browsers, preferably served via conditional comments or similar!
via http://robertnyman.com/2010/01/11/css-background-transparency-without-affecting-child-elements-through-rgba-and-filters/
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Reasons that the passed Intent would be NULL in onStartCommand
...lled with a null intent object, so you must take care to check for this."
http://developer.android.com/reference/android/app/Service.html
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How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
...e a typical developer, you can install the easy way, using instructions at http://gcc.gnu.org/wiki/InstallingGCC or your system package manager such as:
apt install gcc # for Debian, Ubuntu, etc.
yum install gcc # for RedHat, CentOS, etc.
brew install gcc # for Mac OS X
The Hard Way
GCC say...