Reprint address:http://www.cnblogs.com/yangmingming/archive/2010/01/27/1657850.htmlOverview of the. NET Framework:. NET Framework, which itself is one of the two main aspects of. NET technology. In a narrow sense, that is what is usually said. NET Framework. But just. NET technology in terms of. NET technology can be divided into two parts: the. NET FrameWork, which we often emphasize and lift, mainly including the Common language runtime (Common Language runtime,clr) and . NET Framework Class
Extensive programming capabilities, including features such as Web services and data services, are obtained by accessing the BCL (base class Livrary)
CLI Common Language InfrastructureThe built-in types of programming languages were different in the past due to language and platform differences.For example, the number of digits that make up an integer varies widely between languages and platforms.For unified collaboration, there must be a set of standards, which is the CLI (Common Lang
First, the basic concept1. Intermediate Language Il (CTS, CLS Specification, language calls to each other), CLR runtime Environment (. NET virtual machine load assembly compiled into machine language, memory management (allocation and recycling), event framework mechanism staging mechanism, application domain creation and component communication, code security check, and exception handling)CTS (Common type
1. Hidden terminal: A, B and C, A and C cannot hear each other, if they both send packets to B, the collision wil L happen.2. exposed terminal: A and B can hear each other, but actually B can send packets to D.3. IEEE802.11 Wireless communication has no collision detection. Thus, firstly, use the ACK frame to comfirm the correct frame, and it's short interframe space (SIFS); Then use rts/cts to reserve the channel for large frames, a duration field in
referenced variable. Normally, dynamic Association editing will take effect.The reference can be converted to the interface type or from the interface type. The instanceof operator can be used to determine whether the class of an object implements the interface.
Interfaces can inherit interfaces.Image extraction class can be implemented (implements) InterfaceWhether the image class can inherit the concrete class, but the premise is that the object class must have a clear constructor.
[. Net
AfterC # after a long period of study and practice, I constantly feel the essence of the. NET Framework. However, it seems that the concept is confusing. Especially after reading the ". Net you must know" by The anytao bloggerArticleSo that I can clarify the concept and relationship of the. NET Framework:
. NET Framework Overview:
. NET Framework, that is,. NET Framework, as one of the two major aspects of. NET technology. In a narrow sense, it is generally referred to as the. NET Framework.
checking is allowedPublic fOutxCtsFlow As Integer '// specifies whether the CTS is used to detect sending control. If the value TRUE indicates that the CTS is OFF, the sending will be suspended. CTS output flow controlPublic fOutxDsrFlow As Integer '// specifies whether the CTS is used to detect the transmission contr
Association editing will take effect.The reference can be converted to the interface type or from the interface type. The instanceof operator can be used to determine whether the class of an object implements the interface.
Interfaces can inherit interfaces.Image extraction class can be implemented (implements) InterfaceWhether the image class can inherit the concrete class, but the premise is that the object class must have a clear constructor.
[. Net (C #)]What is an application domain? W
vendors.CLRThe compiler must support a minimum set of features.
CLR/CTSSupported featuresCLSThere are many definitions of your own. If you don't care about the operability between languages, you can develop a set of rich types of functions, which are limited by the functional set of the language you calculate. Specifically, when developing types and methods, if you want them to be "visible" externallyCLSIn any programming languageCLSRule. Note,For exampleProgramThe CLs rules are not applica
properties, logical power and various signal functions are defined, as follows:
On the txd and rxd data lines:
(1) logic 1 is-3 ~ -15 V voltage
(2) logic 0 is 3 ~ 15 V voltage
On the control line such as RTS, CTS, DSR, DTR, and DCD:
(1) The signal is valid (on status) 3 ~ 15 V voltage
(2) The signal is invalid (off status)-3 ~ -15 V voltage
It can be seen that the RS-232C is to use positive and negative voltage to represent the logic sta
. A sample reference design circuit provided in the subsequent sections solves this problem.
7. hdmi rx tmds differential Impedance
A large number of devices cannot pass this test, even if many system design engineers are aware of the need to adopt an input differential impedance. Most of the time, the reason the system fails this test is because of the large Parasitic Capacitance from the input ESD protection device or EMI throttling. Most manufacturers of High-speed signal ESD protection devic
methods that control the hardware.Tx_empty (Port)This function checks whether the send FIFO and the shift are empty by the port described in "port". If it is empty, the function should return TIOCSER_TEMT, otherwise return 0. If the port does not support this operation, return TIOCSER_TEMT.Lock: NoneInterrupt: Depends on the caller;This call does not hibernate.Set_mctrl (port, Mctrl)This function sets the serial modem control mode. Mctrl related bits are:-Tiocm_rts RTS signal.-TIOCM_DTR DTR sig
operation. It also ensures that the logical call context of the initial thread can be used in the worker thread. (This has a certain effect on performance)
You can use the ExecutionContext method to prevent context flow and improve the performance of your application. This is also true in Apm,task.
Support for collaborative cancellation
For long-used threads, "Cancel" should be supported
CancellationTokenSource. The caller applies the
typically the host only runs the KDC program. In this article we chose vmw201 as the host running the KDC.After the above software is installed, the configuration files/etc/krb5.conf and/var/kerberos/krb5kdc/kdc.conf are generated on the KDC host, which reflect the realm name and Domain-to-realm Mappings.
2.2.3 Configuration kdc.conf
The default is placed in/var/kerberos/krb5kdc/kdc.conf. or modify the configuration file location by overwriting the KRB5_KDC_PROFILE environment variable.
Conf
types would introduce subtle bugs and performance issues in to their code.) ". This requires that we understand and use value types and reference types correctly.1. Common Type SystemIn C #, whether a variable is a value or a reference depends only on its data type.The basic data types of C # are defined in a platform-independent manner. C # Predefined types are not built into the language, but are built into the. NET Framework: NET uses the common type System (
arrays in memory
4.2 nesting of value type and reference type
5. Use the value type and reference type correctly
5.1 usage of value types and reference types
5.2 implement value types as constant and atomic types as much as possible
5.3 make sure that 0 is a valid status of the Value Type
5.4 reduce packing and unpacking as much as possible
6. Summary
7. Reference
1. General Type System
In C #, whether a variable is a value or a reference only depends on its data type
(compatibilitydefinitiondocument, compatibility test outline) and the CTS Suite (compatibilitytestsuiteThe device manufacturer must first comply with the specifications in the CDD documents, the Specification defines the functional items that must be included in different Android versions, as well as the software and hardware capabilities, performance levels, and security requirements to be supported, and then tests the
(CTS)
The CTS defines predefined data types that can be used in intermediate languages, and all languages that target the. NET framework can generate compiled code that is ultimately based on these types.
The CTS also allows you to define your own type of code.
The hierarchical structure of the CTS r
I think it is still quite detailed in this article. Let's share it with you.
1. General Type System
In C #, whether a variable is a value or a reference only depends on its data type.
The basic data types of C # are defined in a platform-independent manner. The pre-defined type of C # is not built into the language, but is built into the. NET Framework .. . NET uses a general type System (CTS) to define predefined data types that can be used in the in
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