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Specifying an Index (Non-Unique Key) Using JPA
...Table;
@Entity
@Table(name = "region",
indexes = {@Index(name = "my_index_name", columnList="iso_code", unique = true),
@Index(name = "my_index_name2", columnList="name", unique = false)})
public class Region{
@Column(name = "iso_code", nullable = false)
priva...
Why is SCTP not much used/known
...that of streams. Streams provide (usually, I think you can turn it off) an order guarantee within them (much like a TCP connection) but there can be multiple streams per SCTP connection. If your application's data can be sent over multiple streams then you avoid head-of-line blocking where the rece...
Good or bad practice for Dialogs in wpf with MVVM?
...del that exposes things such as the title, the standad buttons to show (in order to have a consistent apparence across all dialogs), a RequestClose event, and a few other things to be able to control the window size and behavior
...
C-like structures in Python
...uct(NamedTuple):
foo: str
bar: int
baz: list
qux: User
my_item = MyStruct('foo', 0, ['baz'], User('peter'))
print(my_item) # MyStruct(foo='foo', bar=0, baz=['baz'], qux=User(name='peter'))
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How do I inspect the view hierarchy in iOS?
...
I've got: error: cannot find interface declaration for '$__lldb_objc_class' any ideas? (lldb) po [[UIWindow keyWindow] recursiveDescription] error: cannot find interface declaration for '$__lldb_objc_class' error: cannot find interface declaration for '$__lldb_objc_class' error:...
When should I use ugettext_lazy?
I have a question about using ugettext and ugettext_lazy for translations.
I learned that in models I should use ugettext_lazy , while in views ugettext.
But are there any other places, where I should use ugettext_lazy too? What about form definitions?
Are there any performance diffrences betwe...
How to specify table's height such that a vertical scroll bar appears?
...nstead of applying it to the table tag, it should be done to the tbody, in order to allow the header to remain static when scrolling. Then there's some styling to sort out with regard to the area in the thead that is above the scroll bar.
– David
Oct 9 '12 at 1...
How to map calculated properties with JPA and Hibernate
...plex queries on other tables:
@Formula("(select min(o.creation_date) from Orders o where o.customer_id = id)")
private Date firstOrderDate;
Where id is the id of the current entity.
The following blog post is worth the read: Hibernate Derived Properties - Performance and Portability.
Without mo...
How to add double quotes to a string that is inside a variable?
...ar string1 = @"""inside quotes""";
var string2 = "\"inside quotes\"";
In order to perhaps make it a bit more clear what happens:
var string1 = @"before ""inside"" after";
var string2 = "before \"inside\" after";
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How to print third column to last column?
...s trated as a new line when printed iwth print
– meso_2600
Apr 1 '15 at 16:26
15
To address the s...