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How do I implement an Objective-C singleton that is compatible with ARC?
...icle. If you're going to override allocWithZone: to prevent more instances from being created, you also should override init to prevent the shared instance from being re-initialized.
– jscs
May 20 '13 at 19:43
...
Multiple levels of 'collection.defaultdict' in Python
...
Use:
from collections import defaultdict
d = defaultdict(lambda: defaultdict(int))
This will create a new defaultdict(int) whenever a new key is accessed in d.
...
Map.clear() vs new Map : Which one will be better? [duplicate]
... with new array. So, garbage collector should clear all the key and values from the previous map, and clear the reference to itself. So O(n) algorithm is executed anyway, but in the garbage collector thread. For 1000 records you won't see any difference.
BUT. The performance guide tells you that it...
How do I set a cookie on HttpClient's HttpRequestMessage
...
handler may be removed from using statement, it will be disposed when http client is disposed.
– Kimi
Aug 1 '16 at 16:21
17
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With Git, how do I turn off the “LF will be replaced by CRLF” warning
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will turning off the warning prevent git from replacing lf by crlf? @chronial
– aidonsnous
Sep 29 '16 at 11:05
3
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Scanning Java annotations at runtime [closed]
...eComponentProvider
API
A component provider that scans the classpath from a base package. It then applies exclude and include filters to the resulting classes to find candidates.
ClassPathScanningCandidateComponentProvider scanner =
new ClassPathScanningCandidateComponentProvider(<DO_YOU...
Allow User to input HTML in ASP.NET MVC - ValidateInput or AllowHtml
...nter252 comments:
You should now use the [AllowHtml] attribute. See below from MSDN:
For ASP.NET MVC 3 applications, when you need to post HTML back to
your model, don’t use ValidateInput(false) to turn off Request
Validation. Simply add [AllowHtml] to your model property, like so:
publi...
How can I use Server.MapPath() from global.asax?
...2f%2fstackoverflow.com%2fquestions%2f935940%2fhow-can-i-use-server-mappath-from-global-asax%23new-answer', 'question_page');
}
);
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Android: Clear the back stack
...te. This is especially useful,
for example, when launching an
activity from the notification
manager.
So your code to launch A would be:
Intent intent = new Intent(this, A.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
Curren...
Can I change multiplier property for NSLayoutConstraint?
...
If you have only have two sets of multipliers that need to be applied, from iOS8 onwards you can add both sets of constraints and decide which should be active at any time:
NSLayoutConstraint *standardConstraint, *zoomedConstraint;
// ...
// switch between constraints
standardConstraint.active...