init

问题 I want to show a Now Playing button in a UINavigationController's bar. I have a class (NowPlayingManager) that I am using to keep track of whether an audio file is currently being played. I use a notification posted in another class (AudioViewController) to indicate playing status. AudioViewController creates an instance of the NowPlayingManager with alloc/init and releases it. In NowPlayingManager's target of the received notification I set NowPlayingManager's isNowPlaying Boolean to YES.

问题 I have a subclass of UIView that I would like to pass a property to. As much as I've tried, I don't truly understand all elements of initializing. Here is a simplified version of my code: class inputWithIncrementView : UIView, UITextFieldDelegate { var inputName : String // This is the property I want to receive and init override init (frame : CGRect) { super.init(frame : frame) // [this is where i will use the inputName property passed on initialization] } required init?(coder aDecoder:

问题 I'm developing an application with Restlet, GAE and Eclipse. Oks, I got this: public class MainRestletApplication extends Application { public MainRestletApplication() { //init code? } @Override public Restlet createInboundRoot() { Router router = new Router(getContext()); router.attach("/v1/mainstatus",MainStatus.class); router.attach("/v1/game/{id}/result",GameResult.class); return router; } } and this: <servlet> <servlet-name>RestletServlet</servlet-name> <servlet-class>org.restlet.ext

问题 First of all, as I understand it, init in Objective-C , functionally is similar to a constructor in Java , as it is used to initialize instance variables and prepare a class to do some work. Is this correct? I understand that NSObject implements init and as such it does not need to be declared in any .h files. But how about custom implementation of init for a given class, for example: (id) initWithName:(NSString *) name Should declaration like this be listed as part of .h , or it is not

问题 I have this class: from threading import Thread import time class Timer(Thread): def __init__(self, interval, function, *args, **kwargs): Thread.__init__() self.interval = interval self.function = function self.args = args self.kwargs = kwargs self.start() def run(self): time.sleep(self.interval) return self.function(*self.args, **self.kwargs) and am calling it with this script: import timer def hello(): print \"hello, world t = timer.Timer(1.0, hello) t.run() and get this error and I can't

问题 I've always set up metaclasses something like this: class SomeMetaClass(type): def __new__(cls, name, bases, dict): #do stuff here But I just came across a metaclass that was defined like this: class SomeMetaClass(type): def __init__(self, name, bases, dict): #do stuff here Is there any reason to prefer one over the other? Update : Bear in mind that I'm asking about using __new__ and __init__ in a metaclass. I already understand the difference between them in another class. But in a metaclass

问题 In creating a login screen with static logins I'm trying to store them privately in the following class implementation. When a button creates IONServer objects I initialize it with the function -(void)login:(NSString *)username password:(NSString *)pw and pass it two UITextField.text strings. If you notice in the init I am testing stuff with NSLog but at every breakpoint it seems like the storedLogins NSMutable array is nil . IONServer.m #import "IONServer.h" #import "IONLoginResult.h"

问题 Please, help me How can i solve this problem? Starting static webserver: /home/ubuntu/node/node_modules/express/lib/express.js:89 throw new Error('Most middleware (like ' + name + ') is no longer bundle ^ Error: Most middleware (like cookieParser) is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect#middleware. at Function.Object.defineProperty.get (/home/ubuntu/node/node_modules/express/lib/express.js:89:13) at Object.<anonymous

问题 We use nodetool escript to stop the node io:format("~p\n", [rpc:call(TargetNode, init, stop, [], 60000)]) Sometimes, probably 1 of 40-50 calls (using OTP 20.3/21.3) rcp:call returns ok, node has done terminates tasks but pid is still alive. I can't connect to it using remsh and node doesn't respond to pings, also any crash dumps etc. Any suggestions where to look? 来源： https://stackoverflow.com/questions/57871313/erlang-node-still-running-after-initstop-ok

问题 In the android system (pie 9.0) I want to read a value from a file (/cache/sticky/lcdlive) and write it to a system property (persist.vendor.lcd.live) in a init.vendor.rc in a exe.sh : lcdfiletmp="cache/sticky/lcdlive" lcdlivetmp=$(cat "$lcdfiletmp") setprop persist.vendor.lcd.live $lcdlivetmp , but according to SElinux I don't have a right. I have tried in vendor.rc: copy /cache/sticky/lcdlive persist.vendor.lcd.live write persist.vendor.lcd.live /cache/sticky/lcdlive result : persist.vendor