大约有 1,162 项符合查询结果（耗时：0.0355秒） [XML]
Why do this() and super() have to be the first statement in a constructor?
...iewed reordered by other threads, unless precautions are made.
Edit March 2018: In message Records: construction and validation Oracle is suggesting this restriction be removed (but unlike C#, this will be definitely unassigned (DU) before constructor chaining).
Historically, this() or super() ...
How to read keyboard-input?
...d_keyboard_input.py
Gabriel Staples
www.ElectricRCAircraftGuy.com
14 Nov. 2018
References:
- https://pyserial.readthedocs.io/en/latest/pyserial_api.html
- *****https://www.tutorialspoint.com/python/python_multithreading.htm
- *****https://en.wikibooks.org/wiki/Python_Programming/Threading
- https:...
What is the maximum amount of RAM an app can use?
...
It's the end of 2018 so things have changed.
First of all: run your app and open Android Profiler tab in Android Studio.
You will see how much memory it consumes, you will be surprised but it can allocate a lot of RAM.
Also here is a great...
HTML table with fixed headers?
...ular way. It supports Internet Explorer9+ and Firefox/Chrome.
Currently (2018-05) it has:
405 commits and 998 stars on GitHub
Many (not all) of the answers here are quick hacks that may have solved the problem one person was having, but will work not for every table.
Some of the other plu...
How many socket connections can a web server handle?
....com/benchmarks/#section=data-r16&hw=ph&test=plaintext
Test date: 2018-06-06
Hardware used: Dell R440 Xeon Gold + 10 GbE
The leader has ~7M plaintext reponses per second (responses not connections)
The second one Fasthttp for golang advertises 1.5M concurrent connections - see https://githu...
best practice to generate random token for forgot password
...r
$token = bin2hex(openssl_random_pseudo_bytes(16));
1. Adi, Mon Nov 12 2018, Celeritas, "Generating an unguessable token for confirmation e-mails", Sep 20 '13 at 7:06, https://security.stackexchange.com/a/40314/
share
...
Why does C++ require a user-provided default constructor to default-construct a const object?
...
I was watching Timur Doumler's talk at Meeting C++ 2018 and I finally realised why the standard requires a user-provided constructor here, not merely a user-declared one. It has to do with the rules for value initialisation.
Consider two classes: A has a user-declared constr...
Why does the C# compiler not fault code where a static method calls an instance method?
...: Below answer was written in 2012, before the introduction of C# 7.3 (May 2018). In What's new in C# 7.3, the section Improved overload candidates, item 1, it is explained how the overload resolution rules have changed so that non-static overloads are discarded early. So the below answer (and this ...
How to declare a structure in a header that is to be used by multiple files in c?
...t C99 struct declaration, as rightfully remarked by Jonathan Leffler.
Edit 2018-06-01:
Craig Barnes reminds us in his comment that you don't need to keep separate names for the struct "tag" name and its "typedef" name, like I did above for the sake of clarity.
Indeed, the code above could well be wr...
React.js: Wrapping one component into another
...han performances, sometimes not. Choose wisely and don't bindly follow the 2018 trend of converting everything to render-props.
share
|
improve this answer
|
follow
...