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What is an abstract class in PHP?
...nd non-abstract methods, but it must contain at least one abstract method. If a class has at least one abstract method, then the class must be declared abstract.
Note: Traits support the use of abstract methods in order to impose requirements upon the exhibiting class.
Example below :
class ...
How to pass JVM options from bootRun
...roxy.
I use "Spring Boot" gradle plugin and the question is how can I specify proxy settings for JVM?
7 Answers
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Explanation of the UML arrows
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5: Association: A relationship between the members of two classifiers.
5a: Aggregation: An association representing a shared ownership relationship. The
Aggregation property of the owner role is set to Shared.
5b: Composition: An association representing a whole-part relationship. The Ag...
Are foreign keys really necessary in a database design?
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If you need an index create one, this should not be a primary reason for FKs. (In fact in certain circumstances (More inserts than selects for example) maintaining a FK might be slower. )
– Robert
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PHPExcel auto size column width
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If a column is set to AutoSize, PHPExcel attempts to calculate the column width based on the calculated value of the column (so on the result of any formulae), and any additional characters added by format masks such as thous...
How do I find the number of arguments passed to a Bash script?
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To clarify: unlike argc in C-like languages, $# will be 0 if there are no arguments passed to the script, 1 if there is one argument, etc.
– Vladimir Panteleev
Dec 8 '14 at 11:55
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Apache redirect to another port
...a new server just to test out again. Thanks again, I'll be sure to update if/when I try this again.
– agentcurry
Aug 15 '13 at 18:08
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Rails 4 - Strong Parameters - Nested Objects
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As odd as it sound when you want to permit nested attributes you do specify the attributes of nested object within an array. In your case it would be
Update as suggested by @RafaelOliveira
params.require(:measurement)
.permit(:name, :groundtruth => [:type, :coordinates => []])
On ...
Erlang's 99.9999999% (nine nines) reliability
...s that the service provided by the AXD301 system was ever offline. Subtle difference. As Joe Armstrong says here:
The AXD301 has achieved a NINE nines reliability (yes, you read that right, 99.9999999%). Let’s put this in context: 5 nines is reckoned to be good (5.2 minutes of downtime/year). 7 n...
How do I POST JSON data with cURL?
...is short for --header, -d for --data)
Note that -request POST is optional if you use -d, as the -d flag implies a POST request.
On Windows, things are slightly different. See the comment thread.
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