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Explain difference between Scanning and parsing.
Scanning and parsing: Scanning process is the process of recognizing the lexical components in a source string whereas parsing is the process of checking the validity of a source string, and to find out its syntactic structure. The purpose for separating scanning from parsing is that the lexical characteristics of a language can be specified by using Type-3 grammars. All Type-3 production identifies lexical components is also a Type-2 production. Conversely, a recognizer for Type-3 productions is easier, simple to build and more efficient throughout execution than a recognizer for Type-2 productions. Therefore it is better to handle the lexical and syntactic elements of a source language separately.
Suppose that the working register W contains the value 0x4F, the register FSR contains the value 0x2B; the register with address 0x2B contains 0x2F and the instruction ADDWF INDF,
What are the features of ABAP/4 Dictionary? The most significant features are: Integrated to aABAP/4 Development Workbench. Active in the runtime environment.
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State The Benefits of Encapsulation To hide the details of a class, you can declare that data or implementation in the private part of class so that other class clients will n
In a DTMF phone, digits are represented by: (A) Orthogonal frequencies. (B) Orthogonal Phases. (C) Orthogonal codes. (D) Orthogonal pulses. Ans: Di
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applications of context free grammar
Define about the Objects The object notation is the same in basic form as that for a class. There are three differences among the notations, these are given below: With
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