p40 yoga

instances (objects) are always stored in heap, and static variables are also;Value types cannot be derived from other types;(P40) when you call the GetType () method of the type variable value, it is always accompanied by the packing process because it cannot be overloaded. If you are dealing with unboxed variables, you should already know the specific type, so use typeof instead;(P41)Objects of the reference type are always on the stack. Values of t

User: 3291191 (qingrun) ========================================================== ============Message group: tech-savvy (157)========================================================== ============Message Type: Chat History========================================================== ============ --------------------------------------------------Message object: ********* (fengwu qingqiu)--------------------------------------------------15:58:59 fengwu qingqiuHello :) Let's get started .. I am not v

reasoning (Y indicates consent, N indicates opposition ): P1 P20 100N y P1 P2 p31 0 99Y n y P1 P2 P3 P40 1 0 99N y P1 P2 P3 P4 P51 0 1 0 98Y n y ...... P1 P2 P3 P4 P5 P6 P7 P8 P9 p100 1 0 1 0 1 0 1 0 96N y Now we will promote the issue of money sharing: 1) to change the rules, the voting plan must receive more than 50% votes (only those who receive the 50% votes will be thrown into the sea to feed the fish ), so how can we solve the problem of 10 pir

meaningful behavior should be migrated to an existing or undiscovered class. P40 (21)We often introduce a proxy class when creating an application analysis model. In the design phase, we often find that many agents are useless and should be removed. P43 (22)Minimize the number of collaborators of classes. P52 The number of other classes used by a class should be as small as possible. (

The law of construction temporarily read only the fourth chapter of the project, some problems in reading the first few chapters:1, P18 Some software enterprises not only free, and even the source code is also a gift, but require the source code developers to comply with some kind of convention, I do not understand how they profit for this software enterprise?2. The P40 page mentions that random number testing does not produce repeatable, consistent r

The most common project risks in software development are poor requirement analysis and poor project design. A good project planner can eliminate the major risks as early as possible, so that most of the work of the project can be carried out as smoothly as possible, so the preparation work tends to focus on improving demand analysis and project planning. ----------- Chapter 3.1 P25 My opinion: when I saw this passage, I thought of two projects in the school. I took the lead. at that time, ther

, to avoid all-encompassing principles, and to centralize the placement of relevant data and behavior ). P36(18) Remove unnecessary classes from your design. SpO2In general, we will downgrade this class to an attribute.(19) Remove classes outside the system. P39Classes outside the system are abstracted to send messages only to the system domain, but do not accept messages sent from other classes in the system domain.(20) do not change operations into classes. Question any class whose name is a v

Some scattered, instant knowledge points to be dealt with.The above section is the question, the following part is the answerSome important concepts: A type defines not only the contents of the data elements, but also the operations that can be performed on such data p3 C + + Each data item has its type P14 Every name in a C + + program must first be declared and then used P14 One of the first design focuses of C + + is the ability to define class types that use the same nat

multi-taskinga) Multi-user indicates that at the same time multiple users can use UNIX operating system simultaneously and they do not interfere with each other;b) Multitasking means that any user can run multiple programs on the UNIX operating system at the same time. 2. Learn about the brief History of Unix(see Bird's p40-p52 or Linux system Management P13)3.GNU projects and free software1) The idea of the gun program was publicly launched by Richa

computer operating system, a control program used to coordinate, manage and control computer hardware and software resources.2) Understand the features of the UNIX operating system: multiuser and multi-taskingA) Multi-user indicates that at the same time multiple users can use UNIX operating system simultaneously and they do not interfere with each other;b) Multitasking means that any user can run multiple programs on the UNIX operating system at the same time.2. Learn about the brief History o

AWC logo (SQL SERVER2008 advanced design P40)Because you can't where p.name=a and p.name=bInstance:SELECT DISTINCT pp. Firstname,pp. LastNameFrom Person.person as ppJoin (select SC. PersonID from Sales.Customer SCJoin Sales.SalesOrderHeader as SohOn SC. Customerid=soh. CustomerIDJoin Sales.SalesOrderDetail as SodOnsoh. Salesorderid=sod. SalesOrderIDJoin Production.Product as POn Sod. Productid=p.productidwhere p.name= ' minipump ') pumpsOn pp. Busine

. such as D:=a, the D is a deposit access, to a is fetched access, so the value in variable a does not change.P37: The fractional portion of the double field width is rounded, but the number in memory is still the original accuracy.P39:random are random functions that produce random real numbers between 0~1.Trunc (random*900) +100 This type can produce a random integer between 100~999The P40:randomize statement, which is the function of making the ran

centralizing the relevant data and behavior). P36(18) Remove unwanted classes from your design. P38In general, we will downgrade this class to an attribute.(19) Remove the class outside the system. P39Classes outside the system are characterized by the abstract view that they only send messages to the system domain but do not accept messages from other classes in the system domain.(20) Do not turn the operation into a class. Challenge any class whose name is a verb or derive an automatic word,

. P40 (21)We often introduce a proxy class when creating an application analysis model. In the design phase, we often find that many agents are useless and should be removed. P43 (22)Minimize the number of collaborators of classes. P52 The number of other classes used by a class should be as small as possible. (23)Minimize the number of messages transmitted b

default paging (LESS-FRSX) git installation Get the latest version and discard local modifications: git fetch Git clean-fdx git reset--hard git tag git checkout v1.7.4.1 Command? /etc/bash_completion Chinese support: git config--global core.quotepath false On Linux, it is best not to use a character set other than UTF-8 (GBK) Install git:$ Brew install git on Mac OS x P