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How do you cast a List of supertypes to a List of subtypes?
...orks; but it doesn't work because you can't cast a generic type of one parameter to another. However, you can cast through an intermediate wildcard type and it will be allowed (since you can cast to and from wildcard types, just with an unchecked warning):
List<TestB> variable = (List<Test...
When to use ko.utils.unwrapObservable?
...swered Mar 8 '12 at 20:46
RP NiemeyerRP Niemeyer
113k1717 gold badges284284 silver badges210210 bronze badges
...
How do I determine whether my calculation of pi is accurate?
I was trying various methods to implement a program that gives the digits of pi sequentially. I tried the Taylor series method, but it proved to converge extremely slowly (when I compared my result with the online values after some time). Anyway, I am trying better algorithms.
...
Convert Rows to columns using 'Pivot' in SQL Server
...e correct code using a hard-coded version initially.
First up, here are some quick table definitions and data for use:
CREATE TABLE #yt
(
[Store] int,
[Week] int,
[xCount] int
);
INSERT INTO #yt
(
[Store],
[Week], [xCount]
)
VALUES
(102, 1, 96),
(101, 1, 138),
(105, 1, 3...
How to perform a mysqldump without a password prompt?
...e you are using Ubuntu, all you need to do is just to add a file in your home directory and it will disable the mysqldump password prompting. This is done by creating the file ~/.my.cnf (permissions need to be 600).
Add this to the .my.cnf file
[mysqldump]
user=mysqluser
password=secret
This let...
What is the difference between Scrum and Agile Development? [closed]
What is the difference between Scrum and Agile Development? Are Sprint and Iterations the same?
7 Answers
...
How to attach debugger to iOS app after launch?
...ch your device connected your Mac
Debug > Attach to Process by PID or Name
In the dialog sheet, enter the name of your app as it appears in the Debug navigator when started via Xcode.
If the app is already running, the debugger will attach to the running process. If it isn't running, it will wa...
Nested attributes unpermitted parameters
...in the controller (instead of attr_accessible in the model) because the former optional gem strong_parameters became part of the Rails Core.
This should look something like this:
class PeopleController < ActionController::Base
def create
Person.create(person_params)
end
private
def p...
Accessing bash command line args $@ vs $*
...
The difference appears when the special parameters are quoted. Let me illustrate the differences:
$ set -- "arg 1" "arg 2" "arg 3"
$ for word in $*; do echo "$word"; done
arg
1
arg
2
arg
3
$ for word in $@; do echo "$word"; done
arg
1
arg
2
arg
3
$ for word in "...
Sharing src/test classes between modules in a multi-module maven project
...
Your Consumer project depends upon your Data project, therefore we are happy that Data must be built prior to Consumer. As a result, using the techniques suggested in the comments, I would ensure your Data project contains all the test...