大约有 44,000 项符合查询结果（耗时：0.0565秒） [XML]
Elegant way to invert a map in Scala
... different keys associated with same values. So, if you are interested in knowing all the keys, here's the code:
scala> val m = Map(1 -> "a", 2 -> "b", 4 -> "b")
scala> m.groupBy(_._2).mapValues(_.keys)
res0: Map[String,Iterable[Int]] = Map(b -> Set(2, 4), a -> Set(1))
...
How do I change Bootstrap 3 column order on mobile layout?
... I have been wondering what the push and pull classes are good for - now I know. Thanks.
– cdonner
May 25 '14 at 17:21
29
...
How to work with Git branches and Rails migrations
...
@pisaruk I know you answered this six years ago, but reading I'm curious what an example of a non-reversible migration would be. I'm having a hard time imagining a situation. I guess the simplest would be a dropped column containing a ...
Authentication issue when debugging in VS2013 - iis express
... they have added that as an 'enhancement'. That is what web.config is for. Now we can't trust what we see in web.config. Brilliant.
– trucker_jim
Feb 28 '14 at 12:04
4
...
Why no ICloneable?
...
ICloneable is considered a bad API now, since it does not specify whether the result is a deep or a shallow copy. I think this is why they do not improve this interface.
You can probably do a typed cloning extension method, but I think it would require a diff...
Difference between case object and object
...between a standard Scala object and a case object is explained by what we know about the difference between standard classes and case classes. This answer doesn't even address the wording of the question.
– itsbruce
Jan 31 '17 at 13:50
...
How can I get Maven to stop attempting to check for updates for artifacts from a certain group from
...one of repositories. Downloads were hanging even with update police never. Now snapshots aren't downloaded which is exactly that I wanted.
– wolfroma
Aug 24 '17 at 19:16
...
git clone through ssh
... 4
1.the test2.git file will be download done
2.you will get the new file(known_hosts) in the ~/.ssh
PS: I create the id_rsa and id_rsa.ub by meself and I deliver it to the Gitlab server. using both keys to any client-sides(windows and Linux).
...
When to use lambda, when to use Proc.new?
...ues on the next line
return "Jason"
end
whowouldwin
#=> "Jason"
Now here's a Proc.new-created proc's return doing the same thing. You're about to see one of those cases where Ruby breaks the much-vaunted Principle of Least Surprise:
def whowouldwin2
myproc = Proc.new {return "Freddy"}...
resizes wrong; appears to have unremovable `min-width: min-content`
... has the style min-width: -webkit-min-content;, just as I hypothesized. So now I only need to solve the problem in Firefox and possibly other browsers I haven’t tested in yet.
– Rory O'Kane
Jul 24 '13 at 1:42
...