c# .net core barcode generator

c# .net core barcode generator

c# .net core barcode generator

c# .net core barcode generator

c# .net core barcode generator,

c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,

c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,

c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,
c# .net core barcode generator,

OBJECT-ORIENTED PROGRAMMING Object-oriented (OO) programming is a more recent development that provides approaches that further advance software reliability and reuse, and that often allow the software to fit better with our understanding of the real world that our programs may be reacting to, or trying to control Instead of procedures, OO programming relies on software objects as the units of modularity An individual object is an instance of a type, or class One creates an instance by using the specifications of the class As an analogy, my car is an instance of the class automobile it has four wheels, a motor, seats, etc, like all cars do, but my car is one specific car among the many automobiles in the world An instance of a class has its own state, or values of its characteristics My car is red; your car is blue; both are automobiles.

2 I1 0

CHAP. 4]

Example 1.7. Find the z parameters for the two-port network of Fig. 1-9. With port 2 (on the right) open-circuited, I2 0 and the use of (1.10) gives V R R R3 R1 k R2 R3 1 2 z11 1 R1 R2 R3 I1 I2 0

The variable E used in lines 1 6 of Example 4.2 is called a type parameter. Like a method parameter, it stands for a type that can be substituted for it. The actual type that is substituted for the type parameter is called a type argument. For example:

My car has 170 hp; yours has 200 hp My car is not moving at this moment; your car is traveling at 34 mph The class automobile specifies that all automobiles have color, horsepower, and speed (among other things) as attributes or instance variables Objects also have behavior Behavior is determined by procedures of the class, and such procedures are called methods An automobile class will have methods such as changeSpeed (to accelerate or decelerate), park, refuel, and turn Given an instance of the automobile class, a program could invoke the changeSpeed method, for example, to cause that particular car to go faster The changeSpeed method is called an instance method, because it affects an instance of the class automobile (one particular automobile) Making the software object the unit of modularity has some important advantages First, OO programming encapsulates the state and behavior of objects.

I1 + V1 _ R1 R2 I2 + V2 _

Queue<String> stringQueue = new Queue<String>(); Here, the collection stringQueue is instantiated by substituting the type argument String for the type parameter E.

Fig. 1-9 Also, the current IR2 owing downward through R2 is, by current division, IR2 But, by Ohm s law, V2 IR2 R2 Hence, by (1.12), z21 V2 R1 R2 I1 I2 0 R1 R2 R3 R1 R2 I R1 R2 R3 1 R1 I R1 R2 R3 1

This program uses two special user-defined types at line 3: an enum Month type defined at line 11 and a generic Pair type defined at lines 13 32:

Programs wishing to use the code of an object can access that code only through public instance variables and public instance methods When a program invokes the changeSpeed method of an automobile, the invoking program has no visibility of how the change is effected This prevents programmers from taking advantage of details of implementation It may sound like a disadvantage to prevent programmers from taking advantage of knowledge of implementation details However, over many years programmers have learned that things change When one takes advantage of some particular implementation detail, one risks having one s program fail when the class is upgraded So, in OO programming, the contract between the class and the user is entirely in the specification.

Similarly, with port 1 open-circuited, I1 0 and (1.13) leads to V R R R3 R2 k R1 R3 2 1 z22 2 R1 R2 R3 I2 I1 0 The use of current division to nd the current downward through R1 yields IR1 and Ohm s law gives V1 R1 IR1 R1 R2 I R1 R2 R3 2 R2 I R1 R2 R3 2

Example 1.8. Find the h parameters for the two-port network of Fig. 1-9. With port 2 short-circuited, V2 0 and, by (1.16), V R1 R3 h11 1 R1 kR3 I1 V2 0 R1 R3 By current division, I2 so that, by (1.18), h21 I2 R1 I1 V2 0 R1 R3 R1 I R1 R3 1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

If port 1 is open-circuited, voltage division and (1.17) lead to V1 and h12 R1 V R1 R3 2 V R1 1 V2 I1 0 R1 R3