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Is a symbol table a dictionary?

Symbol tables and dictionaries perform essentially the same function; they contain entries that are database objects that can be looked up using a text string key. You can add entries to these container objects, and you can use an iterator to step through the entries and query their contents.

What is the symbol table used for?

The symbol table is used to store essential information about every symbol contained within the program. Virtually every phase of the compiler will use the symbol table: The initialization phase will place keywords, operators, and standard identifiers in it.

What is in a symbol table?

The symbol table is used to store essential information about every symbol contained within the program. Virtually every phase of the compiler will use the symbol table: The initialization phase will place keywords, operators, and standard identifiers in it.

What does a symbol table hash do?

A hash table is an array with an index range: 0 to table size 1. These entries are pointers pointing to the names of the symbol table. To search for a name we use a hash function that will result in an integer between 0 to table size 1. Insertion and lookup can be made very fast O(1).

How do I access a symbol table?

A compiler maintains two types of symbol tables: a global symbol table which can be accessed by all the procedures and scope symbol tables that are created for each scope in the program. To determine the scope of a name, symbol tables are arranged in hierarchical structure as shown in the example below: . . .

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