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add created_at and updated_at fields to mongoose schemas
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As of Mongoose 4.0 you can now set a timestamps option on the Schema to have Mongoose handle this for you:
var thingSchema = new Schema({..}, { timestamps: true });
You can change the name of the fields used like so:
var thingSchema = new...
Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
...on.
Example
Assuming you have a hibernate class object for a table with 10 rows based on a primary key combination (column 1 and column 2). Now, you have removed 5 rows from the table at some point of time. Now, if you try to add the same 10 rows again, while hibernate tries to persist the objects...
String literals: Where do they go?
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edited Apr 7 '10 at 4:34
answered Apr 7 '10 at 4:16
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presentViewController:animated:YES view will not appear until user taps again
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answered Jun 11 '15 at 17:02
Tamás ZaholaTamás Zahola
8,64544 gold badges2626 silver badges4141 bronze badges
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No EditorOptionDefinition Export Found Error
In Visual Studio 2013 I started getting the following error when trying to open C# files:
8 Answers
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Is there a way to @Autowire a bean that requires constructor arguments?
I'm using Spring 3.0.5 and am using @Autowire annotation for my class members as much as possible. One of the beans that I need to autowire requires arguments to its constructor. I've looked through the Spring docs, but cannot seem to find any reference to how to annotate constructor arguments.
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Does the Java &= operator apply & or &&?
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edited Feb 3 at 0:26
answered Oct 11 '10 at 14:49
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What's the difference between the 'ref' and 'out' keywords?
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answered Dec 23 '08 at 9:18
Rune GrimstadRune Grimstad
33.2k99 gold badges5656 silver badges7474 bronze badges
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Read/write files within a Linux kernel module
...ts)
{
struct file *filp = NULL;
mm_segment_t oldfs;
int err = 0;
oldfs = get_fs();
set_fs(get_ds());
filp = filp_open(path, flags, rights);
set_fs(oldfs);
if (IS_ERR(filp)) {
err = PTR_ERR(filp);
return NULL;
}
return filp;
}
Close a file (...