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Why do we need virtual functions in C++?
...s to more general). Visa-versa you need an explicit cast, usually a dynamic_cast. Anything else - very prone to undefined behavior so make sure you know what you're doing. To the best of my knowledge, this has not changed since before even C++98.
– Steve314
Jun...
How do you programmatically set an attribute?
...t:
>>> help(setattr)
Help on built-in function setattr in module __builtin__:
setattr(...)
setattr(object, name, value)
Set a named attribute on an object; setattr(x, 'y', v) is equivalent to
``x.y = v''.
Edit: However, you should note (as pointed out in a comment) that you...
Specify JDK for Maven to use
...r a single invocation of maven?
Temporarily change the value of your JAVA_HOME environment variable.
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Transpose/Unzip Function (inverse of zip)?
...
You could also use izip_longest
– Marcin
Sep 26 '13 at 16:52
4
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How to detect if a script is being sourced
...
This seems to be portable between Bash and Korn:
[[ $_ != $0 ]] && echo "Script is being sourced" || echo "Script is a subshell"
A line similar to this or an assignment like pathname="$_" (with a later test and action) must be on the first line of the script or on the...
What is ASP.NET Identity's IUserSecurityStampStore interface?
...e stamp is unchanged (which takes care of things like changing roles etc)
app.UseCookieAuthentication(new CookieAuthenticationOptions {
AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
LoginPath = new PathString("/Account/Login"),
Provider = new CookieAuthenticationPro...
How does Activity.finish() work in Android?
Could someone provide a description of what happens when an Activity calls its finish() method?
4 Answers
...
Can you change a path without reloading the controller in AngularJS?
...parameter, update $scope.view.template. And then those template could be wrapped with something like <div ng-controller="itemFooCtrl">... your template content...</div>. EDIT: Nice to see you solved, it would be great if you updated your question with how you solved, perhaps with a jsFid...
JavaScript pattern for multiple constructors
... b= 'some default value';
if (typeof(a)==='string')
this._constructInSomeWay(a, b);
else if (a instanceof MyType)
this._constructInSomeOtherWay(a, b);
}
You can also access arguments as an array-like to get any further arguments passed in.
If you need more complex ar...
How to write the Fibonacci Sequence?
... now be 1, and b will also be 1, (0 + 1)
and usage:
for index, fibonacci_number in zip(range(10), fib()):
print('{i:3}: {f:3}'.format(i=index, f=fibonacci_number))
prints:
0: 0
1: 1
2: 1
3: 2
4: 3
5: 5
6: 8
7: 13
8: 21
9: 34
10: 55
(For attribution...