大约有 10,700 项符合查询结果（耗时：0.0339秒） [XML]
Unique combination of all elements from two (or more) vectors
...05-05
15 GHI 2012-05-05
If the resulting order isn't what you want, you can sort afterwards. If you name the arguments to expand.grid, they will become column names:
df = expand.grid(a = a, b = b)
df[order(df$a), ]
And expand.grid generalizes to any number of input columns.
...
JRuby on Rails vs. Ruby on Rails, what's difference?
...VM's and it's either compiled or interpreted down to Java byte code.
JRuby can integrate with Java code. If you have Java class libraries (.jar's), you can reference and use them from within Ruby code with JRuby. In the other direction you can also call JRuby code from within Java. JRuby can also us...
Multiple commands in gdb separated by some sort of delimiter ';'?
...
I don't believe so (but I may be wrong). You can do something like this:
(gdb) define fn
> finish
> next
> end
And then just type:
(gdb) fn
You can put this in your ~/.gdbinit file as well so it is always available.
...
Symbolic link to a hook in git
...r (since git doesn't track changes in .git/hooks), somewhere I read that I can make a symbolic link from hooks to .git/hooks so I don't have to copy the file from one folder to the other every time someone changes it so I tried:
...
Vim - how to run a command immediately when starting vim?
I have a plugin (FindFile.vim) that needs to run :FindFileCache . whenever I start vim to gather a file cache for quick opening.. I have to run this every time I start vim though.
...
How to install APK from PC?
I want to install an APK from PC to Android device. And because of user's Android and generally technical skills, I need to do it as automatically (silently) as possible. So how do I send an APK from PC to Android and start install there?
...
Injecting $state (ui-router) into $http interceptor causes circular dependency
... service to get a reference to the $state service.
var interceptor = ['$location', '$q', '$injector', function($location, $q, $injector) {
function success(response) {
return response;
}
function error(response) {
if(response.status === 401) {
$injector.get...
My pull request has been merged, what to do next?
...: going on contributing new features or fixing other bugs in their own dedicated branches (pushed only to your fork).
Meaning your fork stays, but the branches within your fork can come and go.
You can also remove the fork if you are not planning to contribute further, but it will remove the c...
How do you change a repository description on GitHub?
When you create a repository on GitHub, you can optionally create a description of the repository. Unfortunately, I wrote a description that no longer adequately describes the code in the repo.
...
How do I specify “close existing connections” in sql script
...
You can disconnect everyone and roll back their transactions with:
alter database [MyDatbase] set single_user with rollback immediate
After that, you can safely drop the database :)
...