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How to use Jackson to deserialise an array of objects
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1735
First create a mapper :
import com.fasterxml.jackson.databind.ObjectMapper;// in play 2.3
Obje...
How does HashSet compare elements for equality?
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138
It uses an IEqualityComparer<T> (EqualityComparer<T>.Default unless you specify a d...
Oracle “Partition By” Keyword
...ry record in the emp table.)
emp_no dept_no DEPT_COUNT
1 10 3
2 10 3
3 10 3 <- three because there are three "dept_no = 10" records
4 20 2
5 20 2 <- two because there are two "dept_no = 20" records
If there was another column (e....
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
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3446
With new_list = my_list, you don't actually have two lists. The assignment just copies the re...
How to detect if my shell script is running through a pipe?
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396
In a pure POSIX shell,
if [ -t 1 ] ; then echo terminal; else echo "not a terminal"; fi
ret...
How to enumerate an enum with String type?
...ch {
print($0.rawValue)
}
Compatibility with earlier Swift versions (3.x and 4.x)
If you need to support Swift 3.x or 4.0, you may mimic the Swift 4.2 implementation by adding the following code:
#if !swift(>=4.2)
public protocol CaseIterable {
associatedtype AllCases: Collection where ...
How to split a delimited string into an array in awk?
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Have you tried:
echo "12|23|11" | awk '{split($0,a,"|"); print a[3],a[2],a[1]}'
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How can I find WPF controls by name or type?
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320
I combined the template format used by John Myczek and Tri Q's algorithm above to create a fin...
How can I use interface as a C# generic type constraint?
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134
The closest you can do (except for your base-interface approach) is "where T : class", meaning ...
Converting a generic list to a CSV string
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robbie fan
38144 silver badges99 bronze badges
answered Dec 11 '09 at 18:47
jasonjason
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