, and I have been adopted as the answer to the standard answers have some words to add, I think for each of the first to know the arc model of the people, will have this question, so may I also come to discuss with you.Someone asked, under the arc, Iboutlets should be defined as strong or weak? The answer is supported by the largest number of people, with only one excerpt from an official document:From a practical perspective, in IOS and OS X outlets should is defined as declared properties. Out
have noticed, this arrow also has a outlet (output port), outlet can be seen as a pointer from C to V, which is defined in C. Outlet gives us a lot of convenience, and it makes it easy and accurate to apply the order to V within C. C can have a lot of outlet, can have more than one, which also makes it more efficient
to ask C what. Remember the dotted line is unimpeded, so, C know all the things m, if the code to illustrate the matter, that is, C can import m header file or M interface (API). Because C can be through the API of M, so it can be unscrupulous to M request this request that.Let's look at another Green arrow, which is between C and V, and the meaning of the previous Green Arrow, which means that C can communicate directly to V. You can think of the C to put V on the screen and set the properties
to dictate to V, the display of the program will be very difficult, so C can speak to V without restriction.As you may have noticed, this arrow also has a outlet (output port), outlet can be seen as a pointer from C to V, which is defined in C. Outlet gives us a lot of convenience, and it makes it easy and accurate to apply the order to V within C. C can have a
. Switching control switchUse the single View application template to create a project and open the Main.storyboard file.Drag two switch controls (switches) from the object library to the interface and set their state property to the opposite.Because you want to control two switch controls to keep the opposite value in your code, you need to pin the output to the two switch controls, named Leftswitch and Rightswitch, respectively.(PS: Forget how to add export to see the previous article, "iOS se
to 100 times times.At present, the DPL technology is to modulate the distribution cable system so that it can transmit two or even multiple signals at the same time without any mutual loss. The frequencies of these signals are wide, ranging from ultra-low frequency (e.g. 50/60hz) to UHF (e.g. 500/600mhz). The modulation of the technique is achieved by installing a three-outlet directional coupling modulation unit (CU) at the corresponding network int
bury the cable pipe groove under the floor or decorative plate, information outlets to choose the embedded type, the bottom box buried in the wall.
3. Simple design
Because the number of information points is small, management is very convenient, so home wiring no longer need to use wiring racks. The end of the twisted pair is connected to the information outlet and the other end can be connected directly to the hub device, thus saving expenses and
set according to the room or space. The specific content mainly includes the layout of work areas, telecommunications rooms, equipment rooms, and cabling rooms, and cables.
Installation Process Requirements for integrated wiring systems
(L) work zone
1) the installation process of the Communication Terminal (also known as the information outlet) in the work area should comply with the following requirements.
① The Information socket junction box inst
Communication Technology. Power Line Communication has a history of decades. It is a technology that can transmit remote data and voice Communication over Power lines. Because the power grid has a huge coverage, people have come up with the idea of using power lines to achieve broadband access.
Power line network applications Power Line Carrier data signal), the low-voltage distribution network as the communication medium to achieve Internet broadband access, home users through the power socket
When it comes to Ethernet interfaces, it will always remind you of Coupled modular RJ plug and Jack connector. Since the concept of structured Telecom cabling, such interfaces have dominated the telecom market. Previously, from the late 1960s s, almost every sold phone headset had such two pair of connectors. There is no doubt that RJ plug and socket interfaces are widely used. However, as the data transmission speed approaches 10 Gb/s, they seem to be insufficient. Moreover, most manufacturers
System is highly flexible, with changes in the location of various devices and LAN without re-wiring. As long as the cabling is adjusted properly in the cabling system, the requirements can be met. Structured Cabling is generally divided into six subsystems.
1-1. workspace subsystem Work Area) and Network DesignThe workspace subsystem consists of a connection between a terminal device and an information outlet. The information points are composed of
, to ensure the reliability and stability of the entire system, the cabling engineers of Sihai optical fiber will work with the construction personnel throughout the construction site to lay cables in the building. The laying process will also be completed in strict accordance with the LUCENT and AMP standards, from horizontal cables, trunk cables to the installation of each information outlet. Connections to information sockets are implemented accord
exquisite Terminals-humanized combination of technology and AestheticsAs people work longer and longer, comfort and ergonomics have gradually become the most important topics in the workplace. Offices, meeting rooms, and hotel rooms are almost the places for every staff to perform daily activities. Actassi is a series of end products that combine the aesthetic and powerful functions of the technology to ensure real-time communication between users' personal data and voice information, so as to
Integrated WiringSystem Engineering, regardless of its importance or comprehensiveness, is a key project in the main project of intelligent building or intelligent community, especially the installation and construction, with a certain degree of creativity and perfection, so that the intention of the Integrated Wiring System Engineering design can be fully implemented.
Integrated Wiring work zone
1) the installation process of the communication terminal in the work area, also known as the inform
, we have summarized the cable types required for the two types of Console port connectors.
RJ45 console connection
The RJ45 connector looks like a telephone connector used at home, but it must be wider. The telephone connector (the small crystal head at the end of the telephone line that can be inserted into the telephone outlet) contains four wires, and RJ45 uses eight. The so-called rolover Cable looks like a Cable between a phone and a wall-mounte
application. It'll load the homepage of Appcoda. When you are scroll down, notice so can see the page scrolling underneath the translucent navigation bar. We ' ll disable this. Open Main.storyboard and select the View Controller. In the Attributes Inspector, uncheck the under Top Bars option in the Extend Edges group. When you run the app again, the Nav bar should now is solid and you won ' t see the webpage underneath it.Next we ll enable URL input from the user.In the storyboard file, drag a
Ry references between objects that does not imply ownership.
The strong outlets is frequently specified by framework classes (for example, Uiviewcontroller ' s view outlet, or Nswindow Controller ' s window outlet).@property (weak) IBOutlet MyView *viewContainerSubview;@property (strong) IBOutlet MyOtherClass *topLevelObject;
The main idea is that in ARC, the general
difficult, so C can speak to V without restriction.As you may have noticed, this arrow also has a outlet (output port), outlet can be seen as a pointer from C to V, which is defined in C. Outlet gives us a lot of convenience, and it makes it easy and accurate to apply the order to V within C. C can have a lot of outlet
Microsoft Summit invitation letter, school in read proof, MVP certificate, student card, hukou and so on a lot of material. I didn't expect to sign at the U.S. Embassy, the visa officer only saw a Microsoft MVP summit invitation, and then simply asked a few questions to pass. When I came out from the embassy, I could not help but sigh: Microsoft's invitation is quite powerful!November 1November 1 11 o'clock in the morning depart from the T2 terminal of Beijing Capital International Airport.The
window, initializing the Viewcontroller, adding the necessary view, Set their property, and add and process their various responses and responser chains. It's easy to get started with iOS, and Xcode and Xib/storyboard help developers hide too much detail, but many times if you don't understand what underhood is, why these xib/storyboard work, Often the card in some very ridiculous and the initial bug can not find North, which is actually a huge waste of time, it is not worth。 some IB tipsFinall
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.