大约有 47,000 项符合查询结果（耗时：0.0447秒） [XML]
Difference between Inheritance and Composition
...ance is java.util.Stack, which currently extends java.util.Vector. This is now considered a blunder. A stack "is-NOT-a" vector; you should not be allowed to insert and remove elements arbitrarily. It should've been composition instead.
Unfortunately it's too late to rectify this design mistake, sin...
Why call git branch --unset-upstream to fixup?
... version: remote-tracking branch origin/master used to exist, but does not now, so local branch source is tracking something that does not exist, which is suspicious at best—it means a different Git feature is unable to do anything for you—and Git is warning you about it. You have been getting ...
Calculate total seconds in PHP DateInterval
...
Could you not compare the time stamps instead?
$now = new DateTime('now');
$diff = $date->getTimestamp() - $now->getTimestamp()
share
|
improve this answer
...
How to change language of app when user selects language?
...rovide the excerpt of the web page. Where I need to provide please let me know. Thanks.
– Udhay
Oct 18 '12 at 12:08
3
...
How to get Ruby / Homebrew / RVM to work on Yosemite?
...gher - I followed the answer below install xcode command line tools and it now works: stackoverflow.com/a/24225960/1062936
– greg
Feb 4 '15 at 23:59
|
...
Moving Git repository content to another repository preserving history
...
OK, now it worked. I used the following command;cd repo2, > git remote rm origin > git remote add origin url-of-repo1, > git fetch r1remote > git push origin master
– Mario
Jul...
Missing Maven dependencies in Eclipse project
...t set up with maven for resolving dependancies. It usually works fine, but now I am trying to compile and run it on a new PC and I have problem with missing dependencies in Eclipse.
...
JPA CascadeType.ALL does not delete orphans
... all child elements
delete main row
close session
With JPA 2.0, you can now use the option orphanRemoval = true
@OneToMany(mappedBy="foo", orphanRemoval=true)
share
|
improve this answer
...
In Functional Programming, what is a functor?
...ng integers, strings, or Booleans respectively. If the element type is unknown, it is written as a type parameter a, as in T a.
Examples include lists (zero or more elements of type a), the Maybe type (zero or one elements of type a), sets of elements of type a, arrays of elements of type a, all k...
Where is SQL Server Management Studio 2012?
...get RTM versions (non-eval) of the SSMS 2012 toolset.
Note the first link now(dec 2017) points to 'Microsoft® SQL Server® 2012 Service Pack 2 (SP2) Express'. ssms 2014 and 2017 are still available.
share
|
...