Foo*foo1; foo1=[[Foo alloc]init]; After release, object foo1 still points to some memory but the object doesn\'t exist. I want to do something like this:
been looking in a dead gaze at my code and haven\'t got anywhere. the program compiles fine, but whenever Play.java runs \'actionPerformed\' i get a Null Pointer Exception from the \'AWT-EventQueue-0\
I have a query that is selecting about 20 columns, all are varchars. Some will be empty, which is just fine.But I want to put a default string of \"-------\" for any columns that are empty.
I started messing around with generics in Scala, and it is a tough cookie to break. My idea is to learn it by writing a generic matrix class for use in my parallel computing project.
I have added three methods with parameters: public staticvoid doSomething(Object obj) { System.out.println(\"Ob开发者_如何学JAVAject called\");
I have a vector of pointers to objects created with new. Multiple threads access this vector 开发者_高级运维in a safe manner with various gets/sets. However, a thread may delete one of the objects, in
I have to get a QuerySet with many-to-many relations with the same number of results as if I executed the query in the database, but can\'t manage how to do this; I don\'t care if I can get the result
I\'m trying to filter on null columns (I only want to show rows where the column is null), but the issue is I can\'t compare the column to 开发者_运维技巧a null, since the column is of DateTime value.
Artwork.ArtworkMyAvailableVotesDataTable dtCommon2 = new Artwork.ArtworkMyAvailableVotesDataTable(); using (ArtworkTableAdapters.ArtworkMyAvailableVotesTableAdapter artworkTemplates = new ArtworkTable
If a thread calls pthread_cond_wait(cond_ptr,mutex_ptr) will a null cond_ptr, is it guaranteed to not fall asleep?
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