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What is the Swift equivalent of respondsToSelector?
...r:, even if Swift, if you are dealing with NSObject instances:
@interface TestA : NSObject
- (void)someMethod;
@end
@implementation TestA
//this triggers a warning
@end
var a = TestA()
if a.respondsToSelector("someMethod") {
a.someMethod()
}
...
What is the difference between a strongly typed language and a statically typed language?
... the DOMDocument class
That's dynamic typing.
Strong/Weak Typing
(Edit alert!)
Strong typing is a phrase with no widely agreed upon meaning. Most programmers who use this term to mean something other than static typing use it to imply that there is a type discipline that is enforced by the com...
What is the preferred/idiomatic way to insert into a map?
...en different insert versions can be neglected (didn't perform a hypothesis test though)!
The map_W_3[it] = Widget(2.0); version takes about 10-15 % more time for this example due to an initialization with the default constructor for Widget.
...
What does 'super' do in Python?
... class to your object, and want to inject a class between Foo and Bar (for testing or some other reason):
class InjectMe(SomeBaseClass):
def __init__(self):
print('InjectMe.__init__(self) called')
super(InjectMe, self).__init__()
class UnsuperInjector(UnsuperChild, InjectMe): p...
Why does sys.exit() not exit when called inside a thread in Python?
This could be a stupid question, but I'm testing out some of my assumptions about Python and I'm confused as to why the following code snippet would not exit when called in the thread, but would exit when called in the main thread.
...
How do I create a Java string from the contents of a file?
...or the encodings required of all Java runtimes:
String content = readFile("test.txt", StandardCharsets.UTF_8);
The platform default is available from the Charset class itself:
String content = readFile("test.txt", Charset.defaultCharset());
Note: This answer largely replaces my Java 6 version. Th...
Is there a Python equivalent of the C# null-coalescing operator?
...
glglgl has the best answer. I used timeit on a large test array and the reduce implementation is unacceptably slow, the multi-line for/if version is fastest, and the next implementation is very slightly behind. The next version is the best overall when considering simplicity an...
How to post data to specific URL using WebClient in C#
...
All above answers will work fine in testing, but in a real life situation with poor internet this is a better answer.
– Joel Davis
Sep 15 '16 at 5:01
...
Getting distance between two points based on latitude/longitude
...s.name/experiments/haversine/
The aplet does good for the two points I am testing:
6 Answers
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Django admin: How to display a field that is marked as editable=False' in the model?
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oOops. Typical fast-shot. Did not test, seems to be a problem with my installation. Thanks, and sorry.
– nerdoc
Sep 6 '18 at 15:35
2
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