compile time variable 中文意思是什麼
compile time variable
解釋
編譯時變量-
Attempting to use an undeclared variable causes an error at compile time
試圖使用未聲明的變量將導致編譯時錯誤。 -
The dcs of i / a series is regarded as main reference object, and the control is separated from model. and the configuration of control is operatised at administration system, not to be added into model, not to build control sound code also. therefore it realizes on - line adjusting, real - time control and so on. users configurate by filling table. they only define i / o condition, fill certain operation variable, and name logic variable. the software offers a friendly user ' s interface, so personnel can compile and modify the control and logic program, change the value of logic and control variable conveniently, attach themselves to run, debug and control the system, not need to know the programs deeply. so the configuration software offer a flat that control engineers can attend to control loop, not to give their attention to the complicated program
在本課題中，採用填表的方式進行控制組態，用戶只需定義i / o條件、填寫具體的運算變量名即可。本軟體為建模人員提供了一個友好的用戶界面，使建模人員在建模時不必對模塊內部的控制、邏輯程序有很深的了解就可以方便的對其進行編寫和修改，實時改變各邏輯和控制變量在數據庫里的值，參與運行和調試，從而實現對系統的控制。因此，本組態軟體提供的這樣一個平臺，讓控制工程師能集中精力于控制迴路的構成，而不必拘泥於一些具體而煩瑣的程序操作。 -
Therefore it comes true the on - line adjusting, real - time control and so on. it sames as real locale. the software of logic protect ( include electric logic ) and control includes some usual algebraic and operation model of thermal control and logic operation of logic protect. it adopts foxboro ' s dcs as a example, so we configuration via filling table, user only define i / o condition, fill certain operation variable, and name logic variable. the software offers a friendly user ' s interface, personnel can compile and modify the control and logic program, change the value of logic and control variable conveniently, attach themselves to run, debug and control the set, not need to know about the inside of the old programs deeply. so the configuration software offer a flat that control engineer can attend to the structure of control loop and logic protect ( include electric logic ), not but to handle complicated program
它以foxboro的dcs控制系統為主要參考模式，採用填表的方式進行控制組態，用戶只需定義i / o條件、填寫具體的運算變量名、邏輯變量名即可。本軟體為建模人員提供了一個友好的用戶界面，使建模人員在建模時不必對模塊內部的控制、邏輯程序有很深的了解就可以方便的對其進行編寫和修改，實時改變各邏輯和控制變量在數據庫里的值，參與運行和調試，從而實現對機組的控制。因此，本組態軟體提供的這樣一個平臺，讓控制工程師能集中精力于控制迴路及邏輯保護（包含電氣邏輯）的構成，而不必拘泥於一些具體而煩瑣的程序操作。 -
If you attempt to use an undeclared variable name, an error occurs at compile time
語句顯式聲明所有變量。試圖使用未聲明的變量名將發生編譯時錯誤。 -
A variable is a storage location and has an a ociated type, sometimes called its compile - time type, that is either a primitive type ( 4. 2 ) or a reference type ( 4. 3 )
變量是關聯于特定類型的存儲單元，所關聯的類型有時叫做變量的編譯時類型，即，既可以是簡單類型也可以是引用類型。 -
A variable is a storage location and has an associated type, sometimes called its compile - time type, that is either a primitive type ( 4. 2 ) or a reference type ( 4. 3 )
變量是關聯于特定類型的存儲單元，所關聯的類型有時叫做變量的編譯時類型，即，既可以是簡單類型也可以是引用類型。 -
A variable is a storage location and has an associated type, sometimes called its compile - time type, that is either a primitive type ( @ sect ; 4. 2 ) or a reference type ( @ sect ; 4. 3 )
變量是關聯于特定類型的存儲單元，所關聯的類型有時叫做變量的編譯時類型，即，既可以是簡單類型也可以是引用類型。 -
If the local variable declaration includes multiple declarators, the initializers must all have the same compile - time type
如果局部變量聲明包含了多個聲明符，這些聲明符必須具備同樣的編譯期類型。 -
Keyword tells the compiler not to optimize out sections of code by predicting the value of the variable at compile time
關鍵字來聲明變量，就可以告訴編譯器在編譯的時候，不需要通過預測變量值來優化這部分的代碼。
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