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What is the order of precedence for CSS?
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There are several rules ( applied in this order ) :
inline css ( html style attribute ) overrides css rules in style tag and css file
a more specific selector takes precedence over a less specific one
rules that appear later in the code override earlier rules if bo...
Postgresql GROUP_CONCAT equivalent?
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Note that the syntax also allows you to specify the order of values in the string (or array, using array_agg) e.g. string_agg(some_column, ',' ORDER BY some_column) or even string_agg(surname || ', ' || forename, '; ' ORDER BY surname, forename)
– IMSoP
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How to simplify a null-safe compareTo() implementation?
...gt; NULL_SAFE_COMPARATOR
= new NullComparator(String.CASE_INSENSITIVE_ORDER);
@Override
public int compareTo(Metadata other) {
int result = NULL_SAFE_COMPARATOR.compare(this.name, other.name);
if (result != 0) {
return result;
}
return NULL_SAFE_COMPARATOR.compare(this....
How to delete duplicate rows in SQL Server?
...4], [col5], [col6], [col7],
RN = ROW_NUMBER()OVER(PARTITION BY col1 ORDER BY col1)
FROM dbo.Table1
)
DELETE FROM CTE WHERE RN > 1
DEMO (result is different; I assume that it's due to a typo on your part)
COL1 COL2 COL3 COL4 COL5 COL6 COL7
john 1 1 1...
A 'for' loop to iterate over an enum in Java
...se of lambda and streams (Tutorial):
Stream.of(Direction.values()).forEachOrdered(System.out::println);
Why forEachOrdered and not forEach with streams ?
The behaviour of forEach is explicitly nondeterministic where as the forEachOrdered performs an action for each element of this stream, in t...
Update R using RStudio
... the install.packages() function or the update.packages(function).
So, in order to install R,
go to http://www.r-project.org,
click on 'CRAN',
then choose the CRAN site that you like. I like Kansas: http://rweb.quant.ku.edu/cran/.
click on 'Download R for XXX' [where XXX is your operating syste...
What is Data Transfer Object?
...cular/cyclic dependency.
User Service ----> XX CANNOT CALL XX ----> Order Service
Some ORM Frameworks have the ability of projection via using additional interfaces or classes. So repositories can return View objects directly. There for you do not need an additional transformation.
For ins...
How can I comment a single line in XML?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Html helper for
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Improved version of Paulius Zaliaduonis' answer:
In order to make the validation work properly I had to change the Model to:
public class ViewModel
{
public HttpPostedFileBase File { get; set; }
[Required(ErrorMessage="A header image is required"), FileExtensio...
How to create an HTML button that acts like a link?
... Seems a little overkill for styling a single button, no? With border, padding, background, and other CSS effects you can style buttons and links to look similar without bringing over an entire framework. The methodology Bootstrap uses is good, however using Bootstrap seems excessive.
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