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What is the difference between public, protected, package-private and private in Java?
... friends -> "The less you know about it the better" ---> It gives selective visibility, which is still superior to package privacy. In C++, it has its uses, because not all functions can be member functions, and friends is better than public'ing. Of course there is a danger of misuse by evi...
How to manage REST API versioning with spring?
...) endpoint from user v2!
Rest Documentation
As i said before the reason i select the URL-based versioning approach is that some tools like swagger do not document differently the endpoints with the same URL but different content type. With this solution, both endpoints are displayed since have diff...
When to use ' (or quote) in Lisp?
...WITH-STRING (LENGTH STRING))
Hey! That's not what we wanted. We want to selectively evaluate some arguments, and leave the others as symbols. Try #2!
(defun mess-with (number string)
(list 'value-of-number (1+ number) 'something-with-string (length string)))
Lisp> (mess-with 20 "foo")
(VAL...
How to use a WSDL file to create a WCF service (not make a call)
...for. Try "Contract First" and WCF. or "WSDL First" and WCF.
Here is a selection:
Basic overview of WSDL-First development with WCF and SvcUtil.exe.
WSCF - A free add-in to Visual Studio enabling Contract-First design with WCF
Introduction to WSCF
A walkthrough of using WSCF
The WSCF proje...
Split comma-separated strings in a column into separate rows
... occasions, because the datatable approaches only produce tables with the "selected" columns, while dplyr produces a result with all the columns (including the ones not involved in the analysis and without having to write their names in the function).
– Ferroao
...
Why aren't my breakpoints working?
...e Xcode Debugging preferences.
Make sure that "Load Symbols lazily" is NOT selected.
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How to list of all the tables defined for the database when using active record?
...
Don't know about active record, but here's a simple query:
select table_name
from INFORMATION_SCHEMA.Tables
where TABLE_TYPE = 'BASE TABLE'
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Simple way to find if two different lists contain exactly the same elements?
...) because we are doing O(2*n) insertions into a hashmap and O(3*n) hashmap selects. I have not fully tested this code, so beware :)
//Returns true:
listsAreEquivelent(Arrays.asList("A","A","B"),Arrays.asList("B","A","A"));
listsAreEquivelent(null,null);
//Returns false:
listsAreEquivelent(Arrays.as...
You have already activated X, but your Gemfile requires Y
...e exec is to uninstall the newer versions of rake.
$ gem uninstall rake
Select gem to uninstall:
1. rake-0.8.7
2. rake-0.9.2
3. All versions
> 2
Successfully uninstalled rake-0.9.2
This works, but if you are working with multiple apps that use different versions of rake, this can be a pai...
For i = 0, why is (i += i++) equal to 0?
... x is evaluated to produce the variable.
The value of x is saved.
The selected operator is invoked with the saved value of x as its argument.
The value returned by the operator is stored in the location given by the evaluation of x.
The saved value of x becomes the result of the operation.
...