.net pdf 417

.net pdf 417

.net pdf 417

.net pdf 417

.net pdf 417

.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,
.net pdf 417,

25:

public IComparer<T> Comparer { get; } public T Max { get; } public T Min { get; } Comparer obtains the comparer for the invoking set The Max property obtains the largest value in the set, and Min obtains the smallest value To see an example of SortedSet<T> in action, simply substitute SortedSet for HashSet in the program in the preceding section

The NET Framework version 40 adds a new namespace called SystemCollectionsConcurrent It contains collections that are thread-safe and designed to be used for parallel programming This means they are safe to use in a multithreaded program in which two or more concurrently executing threads might access a collection simultaneously The concurrent collections are shown here

Concurrent Collection BlockingCollection<T> ConcurrentBag<T> Description Provides a wrapper for a blocking implementation of the IProducerConsumerCollection<T> interface An unordered implementation of the IProducerConsumerCollection<T> interface that works best when a single thread produces and consumes the information Stores key/value pairs Thus, it implements a concurrent dictionary Implements a concurrent queue Implements IProducerConsumerCollection<T> Implements a concurrent stack Implements IProducerConsumerCollection<T>

(a) (b) (c) (d) (e) (f)

Notice that several of the collections implement the IProducerConsumerCollection interface This interface is also defined in SystemCollectionsConcurrent It extends IEnumerable, IEnumerable<T>, and ICollection It also specifies the TryAdd( ) and TryTake( ) methods that support the producer/consumer pattern (The classic producer/ consumer pattern is characterized by two tasks One task creates items and the other consumes them) TryAdd( ) attempts to add an item to the collection, and TryTake( ) attempts to remove an item from the collection These methods are shown here: bool TryAdd(T item) bool TryTake(out T item) TryAdd( ) returns true if item was added to the collection, and TryTake( ) returns true if an object was removed from the collection If TryTake( ) is successful, then item will contain the object (IProducerConsumerCollection also specifies an overload to CopyTo( ) defined by ICollection and ToArray( ) that copies a collection to an array) The concurrent collections are often used in conjunction with the Task Parallel Library or PLINQ Because of the specialized nature of these collections, not every class is examined in detail However, a brief overview with examples of BlockingCollection<T> will be given Once you know the basics related to BlockingCollection<T>, the other classes will be easy to understand

Part II:

for(int i = 0; i < 8; i++) { for(int t=128; t > 0; t = t/2) { if((val & t) != 0) ConsoleWrite("1 "); if((val & t) == 0) ConsoleWrite("0 "); } ConsoleWriteLine(); val = val << 1; // left shift } ConsoleWriteLine(); val = 128; for(int i = 0; i < 8; i++) { for(int t=128; t > 0; t = t/2) { if((val & t) != 0) ConsoleWrite("1 "); if((val & t) == 0) ConsoleWrite("0 "); } ConsoleWriteLine(); val = val >> 1; // right shift } } }

3 Use the method of u-substitution to evaluate each of the following indefinite integrals (a) (b) (c) (d) (e) (1 + cos x)2 2 sin x cos x dx cos x dx x sin(ln x) cos(ln x) dx x e sin x cos x dx cos x 1 + sin x sec x 1 tan x

The output from the program is shown here:

0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1