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List distinct values in a vector in R
... applied to a factor) is that levels will return a character vector in the order of levels, including any levels that are coded but do not occur. unique will return a factor in the order the values first appear, with any non-occurring levels omitted (though still included in levels of the returned f...
How can I suppress all output from a command using Bash?
...is to assign the result of a command to a variable:
$ DUMMY=$( grep root /etc/passwd 2>&1 )
$ echo $?
0
$ DUMMY=$( grep r00t /etc/passwd 2>&1 )
$ echo $?
1
Since Bash and other POSIX commandline interpreters does not consider variable assignments as a command, the present command's ...
Detecting design mode from a Control's constructor
... can also do it by checking process name:
if (System.Diagnostics.Process.GetCurrentProcess().ProcessName == "devenv")
return true;
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HQL ERROR: Path expected for join
...ct u from UserGroup ug inner join ug.user u
where ug.group_id = :groupId
order by u.lastname
As a named query:
@NamedQuery(
name = "User.findByGroupId",
query =
"SELECT u FROM UserGroup ug " +
"INNER JOIN ug.user u WHERE ug.group_id = :groupId ORDER BY u.lastname"
)
Use paths in t...
SQL keys, MUL vs PRI vs UNI
... column of a table, Key displays the one with the highest priority, in the order PRI, UNI, MUL.
As a general note, the MySQL documentation is quite good. When in doubt, check it out!
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CSS3 background image transition
...ormal" state will be first child your container, or change the nth-child() order)
CSS2 solution http://jsfiddle.net/eD2zL/2/ (differences between are just a few selectors)
Basically, you need to hide "normal" state and show their "hover" when you hover it
and that's it, I hope somebody find it us...
Changing Ctrl + Tab behavior for moving between documents in Visual Studio
...extDocumentWindow (Ctrl+F6) although that seems to cycle tabs in a strange order.
– DGreen
Apr 30 '13 at 13:49
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How to save an activity state using save instance state?
... savedInstanceState.putString("MyString", "Welcome back to Android");
// etc.
}
The Bundle is essentially a way of storing a NVP ("Name-Value Pair") map, and it will get passed in to onCreate() and also onRestoreInstanceState() where you would then extract the values from activity like this:
@O...
How do you serve a file for download with AngularJS or Javascript?
...scope.url = (window.URL || window.webkitURL).createObjectURL( blob );
in order to enable the URL:
app = angular.module(...);
app.config(['$compileProvider',
function ($compileProvider) {
$compileProvider.aHrefSanitizationWhitelist(/^\s*(https?|ftp|mailto|tel|file|blob):/);
}]);
Plea...
Make install, but not to default directories?
...install the things in their own folder as opposed to the system's /usr/bin etc. is that possible? even if it references tools in the /usr/bin etc.?
...