how to understand this line of code? static void * a = &a; I saw it on the source code of AFN. static void *AFHTTPRequestSerializerObserverContext = &AFHTTPRequestSerializerObserverContext; The AFURLRequestSerialization.h file is used wh...
Preface: 2003~ problem description: existing store Id collection [List < Integer >], and execute static method [staticizeIndexBySubsite (Integer subId)], want to open 3 threads to let staticizeIndexBySubsite method consume store collection List, ...
1. According to Google s official machine learning course code, there is no problem when executing in an interactive environment, but an error will be reported when executed in vscode; the 2.python code is as follows: import numpy as np np.random.p...
when I read vue VNode s API today, I saw that some grammars are very advanced, and some don t find relevant answers. Do you know what the following writing methods are all about? github address the previous one? I don t know what it means, and why...
how to detect which permissions are on or off in app ...
for example, if you get a random number of 0 to 10, you can think of the following two kinds of Math.ceil(Math.random()*10); Math.floor(Math.random()*(10+1)); but see that someone says to use Math.ceil (Math.random () * 10); the chance of taking 0 is ...