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What does denote in C# [duplicate]
...s is written as:
public class List<T> : ...
{
public void Add(T item);
}
Some more information about generics.
You can limit the scope of the type T.
The following example only allows you to invoke the method with types that are classes:
void Foo<T>(T item) where T: class
{
}...
What Xcode keyboard shortcuts do you use regularly? [closed]
...
Best shortcut of XCode period
– Vladimir Amiorkov
Nov 22 '16 at 13:27
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Android DialogFragment vs Dialog
... DialogFragment for a simple Yes-No confirmation message box. What is the best practice in this case?
9 Answers
...
Populating a ListView using an ArrayList?
...yAdapter which will adapt your ArrayList (or any other collection) to your items in your layout (ListView, Spinner etc.).
This is what the Android developer guide says:
A ListAdapter that manages a ListView backed by an array of arbitrary objects. By default this class expects that the provided res...
Getting a random value from a JavaScript array
... lodash included in your project you can use _.sample.
// will return one item randomly from the array
_.sample(['January', 'February', 'March']);
If you need to get more than one item randomly, you can pass that as a second argument in underscore:
// will return two items randomly from the arra...
How to concatenate items in a list to a single string?
Is there a simpler way to concatenate string items in a list into a single string? Can I use the str.join() function?
11...
How do you make an element “flash” in jQuery
...
The best idea ever. I used a settimeout to remove the class 2 seconds after the effect
– insign
Aug 24 '13 at 17:44
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How to replace multiple substrings of a string?
...nes to do the replacement
rep = dict((re.escape(k), v) for k, v in rep.iteritems())
#Python 3 renamed dict.iteritems to dict.items so use rep.items() for latest versions
pattern = re.compile("|".join(rep.keys()))
text = pattern.sub(lambda m: rep[re.escape(m.group(0))], text)
For example:
>>...
How to implement an ordered, default dict? [duplicate]
...lf, *a, **kw)
self.default_factory = default_factory
def __getitem__(self, key):
try:
return OrderedDict.__getitem__(self, key)
except KeyError:
return self.__missing__(key)
def __missing__(self, key):
if self.default_factory is None:...
Reverse / invert a dictionary mapping
...
For Python 2.7.x
inv_map = {v: k for k, v in my_map.iteritems()}
For Python 3+:
inv_map = {v: k for k, v in my_map.items()}
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