Adding buttons with a void method

為{幸葍}努か 提交于 2019-12-14 04:25:59
问题 I'm quite new to the programming circuit and I'm trying to learn Java systematically ending up at Swing for the moment. I think I get what void methods do and are used for but I can't wrap my head around this piece of example code (extracted from --BorderLayoutDemo): public

C++ differ between Linking with .o and with .a file: different behavior, why?

倾然丶 夕夏残阳落幕 提交于 2019-12-14 03:47:25
问题 I expected that: linking with .o file, and linking with .a file archived from the .o file, should have no difference. But the fact is not. I have got 2 source files, each declaring 1class+1 static object+1 function, and a main.cpp that called one of the functions $cat First.cpp #include<stdio.h>

PHP Static vs Instance

别来无恙 提交于 2019-12-14 03:47:12
问题 I am just about to write a method to convert some billing data into an invoice. So say i have and an array of objects that contain the data necessary to create the invocie items. While in the billing controller Which of the following way is correct $invoice = new Invoice(); $invoice-

Using $this inside static methods and methods called by this method

佐手、 提交于 2019-12-14 03:24:07
问题 How do I use $this->var1 inside a method that is called from a static method? I have this method: static public function getModuleConfigInputfields(array $data) { $fields = new InputfieldWrapper(); $modules = Wire::getFuel('modules'); $field = $modules->get("InputfieldText"); $field->attr('name

Using the static keyword to preserve the state of a Tic-tac-toe board in Android

僤鯓⒐⒋嵵緔 提交于 2019-12-14 03:16:27
问题 Yesterday I asked this question on the network about how to resume a simple Tic-tac-toe game after closing and opening the fragment. As I said in my question: I'm learning Android development by creating a test project: Tic-tac-toe. My Tic-tac-toe app starts with a Main Menu activity with a

Global Variables in Objective C

不打扰是莪最后的温柔 提交于 2019-12-14 00:25:39
问题 I have a counter which I use to get an object at that counters index and I need to access it in another class. How are static variables declared in Objective C? 回答1: Hi alJaree, You declare a static variable in the implementation of Your class and enable access to it through static accessors:

why can my browser still open an html file not served through a static file server?

时光怂恿深爱的人放手 提交于 2019-12-13 22:03:29
问题 Just wondering how/why this works, when I'm making a simple html file and linking in some css, then dragging my html file into the browser, no static web server is needed for me to view the file. Why is that so.. I'm looking at my browser's network tab, and no request is made for the css file,

Will value objects in a copy of a static ConcurrentHashMap reference the same value objects as the original?

♀尐吖头ヾ 提交于 2019-12-13 20:09:15
问题 I have a two part question. I have: private static ConcurrentHashMap<Integer, Servers> servers= null; which I later populate. In method getAllServers , I'm doing this: public static synchronized ConcurrentHashMap<Integer, Server> getAllServers() { ConcurrentHashMap<Integer, Server> toReturn = new