大约有 16,000 项符合查询结果（耗时：0.0317秒） [XML]
How do I get the currently displayed fragment?
... Doesn't findFragmentById iterate through all the fragments internally? :)
– Andrew Senner
May 24 '15 at 19:25
47
...
FirstOrDefault: Default value other than null
...
var result = query.FirstOr(otherDefaultValue);
although as Mr. Steak points out this could be done just as well by .DefaultIfEmpty(...).First().
share
|
improve this answer
|
...
Making TextView scrollable on Android
I am displaying text in a textview that appears to be too long to fit
into one screen. I need to make my TextView scrollable. How can I do
that?
...
process.waitFor() never returns
...;
String line;
while ((line = reader.readLine()) != null)
System.out.println("tasklist: " + line);
process.waitFor();
share
|
improve this answer
|
follow
...
How to determine the version of the C++ standard used by the compiler?
...e, run the following code to check the version.
#include<iostream>
int main() {
if (__cplusplus == 201703L) std::cout << "C++17\n";
else if (__cplusplus == 201402L) std::cout << "C++14\n";
else if (__cplusplus == 201103L) std::cout << "C++11\n";
else if (__c...
C++ Structure Initialization
... don't get C++ programmers when it comes to being consistent and writing maintainable code, they seem to always want to do something different to make their code stand out, the code is meant to reflect the problem being solved it shouldn't be an idiom on its own, aim for reliability and ease of main...
Swift class introspection & generics
...based type using generics, however I am encountering difficulty with class introspection.
7 Answers
...
&& (AND) and || (OR) in IF statements
...
If we didn't have 'short-circuits' in Java, we'd receive a lot of NullPointerExceptions in the above lines of code.
share
|
improve this answer
|
follow
|
...
How to set cornerRadius for only top-left and top-right corner of a UIView?
...
Pay attention to the fact that if you have layout constraints attached to it, you must refresh this as follows in your UIView subclass:
override func layoutSubviews() {
super.layoutSubviews()
roundCorners(corners: [.topLeft, .topRight], radius: 3.0)
}
If you don't do tha...
Django : How can I see a list of urlpatterns?
...om list_urls(lis[1:], acc)
for p in list_urls(urlconf.urlpatterns):
print(''.join(p))
This code prints all URLs, unlike some other solutions it will print the full path and not only the last node. e.g.:
admin/
admin/login/
admin/logout/
admin/password_change/
admin/password_change/done/
admi...