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Why use Abstract Base Classes in Python?
...t.
For example, if there is a __str__() method, it is expected to return a string representation of the object. It could delete all contents of the object, commit the transaction and spit a blank page out of the printer... but there is a common understanding of what it should do, described in the Py...
Difference between Lookup() and Dictionary(Of list())
... Stopwatch stopwatch = new Stopwatch();
var list = new List<string>();
for (int i = 0; i < 5000000; ++i)
{
list.Add(i.ToString());
}
stopwatch.Start();
var lookup = list.ToLookup(x => x);
stopwatch.Stop();
Co...
Objective-C ARC: strong vs retain and weak vs assign
..." include an implicit "retain"
Example:
@property (nonatomic, retain) NSString *name;
@synthesize name;
4.assign
assign is the default and simply performs a variable assignment
assign is a property attribute that tells the compiler how to synthesize the property's setter implementation
I wo...
Injecting $scope into an angular service function()
..., function (data) {
$scope.message = data; // I'm assuming data is a string error returned from your REST API
})
}
}]);
The form:
<div class="form-message">{{message}}</div>
<div ng-controller="StudentSaveController">
<form novalidate class="simple-form">
...
How can I use if/else in a dictionary comprehension?
...
and you want to create a new dictionary whose keys indicate whether the string 'a' is contained in the values or not, you can use
dout = {"a_in_values_of_{}".format(k) if 'a' in v else "a_not_in_values_of_{}".format(k): v for k, v in d.items()}
which yields
{'a_in_values_of_key1': {'a', 'b', ...
What's the standard way to work with dates and times in Scala? Should I use Java types or there are
...atted(DateTimeFormat.forPattern("yyyyMMdd")) - I get an error asking for a string argument.
– Ivan
Sep 2 '10 at 22:59
1
...
Inserting HTML into a div
...
Would help to see an example with a long string of Html inserted. For example, I have a case in which server technologies (php etc) are disallowed, and I want to re-use about 20 lines of html inside the same page.
– Jennifer Michelle
...
Cancellation token in Task constructor: why?
...in the accepted answer by Max Galkin:
class Program
{
static void Main(string[] args)
{
Console.WriteLine("*********************************************************************");
Console.WriteLine("* Start canceled task, don't pass token to constructor");
Console.Wri...
C++11 range based loop: get item by value or reference to const
...;MyClass>, where MyClass has some non-trivial copy semantics (e.g. std::string, some complex custom class, etc.) then I'd suggest using const auto& to avoid deep-copies:
for (const auto & x : vec)
....
share...
Single script to run in both Windows batch and Linux Bash?
...er cmd code is to use heredocs so that sh treats the cmd code as an unused string and cmd interprets it. In this case, we make sure that our heredoc’s delimiter is both quoted (to stop sh from doing any sort of interpretation on its contents when running with sh) and starts with : so that cmd skip...