大约有 35,100 项符合查询结果（耗时：0.0626秒） [XML]
Operator overloading in Java
... define your own operators which act in the same way though.
For a Java-like (and JVM-based) language which does support operator overloading, you could look at Kotlin or Groovy. Alternatively, you might find luck with a Java compiler plugin solution.
...
How do I clone a Django model instance object and save it to the database?
...
Just change the primary key of your object and run save().
obj = Foo.objects.get(pk=<some_existing_pk>)
obj.pk = None
obj.save()
If you want auto-generated key, set the new key to None.
More on UPDATE/INSERT here.
Official docs on copying...
How do I detect “shift+enter” and generate a new line in Textarea?
...olution:
Tim's solution below is better I suggest using that:
https://stackoverflow.com/a/6015906/4031815
My solution
I think you can do something like this..
EDIT : Changed the code to work irrespective of the caret postion
First part of the code is to get the caret position.
Ref: How to...
The most accurate way to check JS object's type?
... answered Oct 25 '11 at 18:50
kmathenykmatheny
3,67211 gold badge1616 silver badges1212 bronze badges
...
How to check whether a given string is valid JSON in Java
...
Vadzim
19.8k99 gold badges114114 silver badges137137 bronze badges
answered Apr 16 '12 at 13:19
MByDMByD
...
How do I do a not equal in Django queryset filtering?
... I've never used them but it seems they can be negated and combined much like normal python expressions.
Update: I Just tried it out, it seems to work pretty well:
>>> from myapp.models import Entry
>>> from django.db.models import Q
>>> Entry.objects.filter(~Q(id = 3))
...
PDO mysql: How to know if insert was successful
...e on success. There is also PDOStatement->errorCode() which you can check for errors.
share
|
improve this answer
|
follow
|
...
Javascript - Track mouse position
I am hoping to track the position of the mouse cursor, periodically every t mseconds. So essentially, when a page loads - this tracker should start and for (say) every 100 ms, I should get the new value of posX and posY and print it out in the form.
...
Simple insecure two-way data “obfuscation”?
I'm looking for very simple obfuscation (like encrypt and decrypt but not necessarily secure) functionality for some data. It's not mission critical. I need something to keep honest people honest, but something a little stronger than ROT13 or Base64 .
...
Resolve build errors due to circular dependency amongst classes
...often find myself in a situation where I am facing multiple compilation/linker errors in a C++ project due to some bad design decisions (made by someone else :) ) which lead to circular dependencies between C++ classes in different header files (can happen also in the same file) . But fortunately(?...