Symbol

Symbol["name"]

refers to a symbol with the specified name.

Details

  • All symbols, whether explicitly entered using Symbol or not, have head Symbol.
  • x_Symbol can be used as a pattern to represent any symbol.
  • The string "name" in Symbol["name"] must be an appropriate name for a symbol. It can contain any letters, letter‐like forms, or digits, but cannot start with a digit.
  • Symbol["name"] creates a new symbol if none exists with the specified name.
  • A symbol such as x has a name "x".
  • If Symbol["name"] creates a new symbol, it does so in the context specified by $Context.

Examples

open allclose all

Basic Examples  (1)

Scope  (4)

Use Symbol to create new symbols in a program:

Use Symbol for pattern matching:

Create a symbol in a given context:

Create a symbol in the current context:

Applications  (1)

Create several symbols in a program:

Properties & Relations  (9)

Symbol creates new symbols in the current context:

Unique creates symbols with a unique new name:

Module creates new temporary symbols every time it is evaluated:

Symbol and SymbolName are inverses of each other:

Many functions of symbols also accept symbol names as arguments:

Context gives the context of a symbol:

Possible symbol names can be characterized by regular expressions:

Symbol resolves context aliases:

LocalSymbol and CloudSymbol provide for persistent storage of values:

Possible Issues  (1)

The name must satisfy the syntax for symbol names:

Wolfram Research (1988), Symbol, Wolfram Language function, https://reference.wolfram.com/language/ref/Symbol.html (updated 1996).

Text

Wolfram Research (1988), Symbol, Wolfram Language function, https://reference.wolfram.com/language/ref/Symbol.html (updated 1996).

CMS

Wolfram Language. 1988. "Symbol." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 1996. https://reference.wolfram.com/language/ref/Symbol.html.

APA

Wolfram Language. (1988). Symbol. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Symbol.html

BibTeX

@misc{reference.wolfram_2024_symbol, author="Wolfram Research", title="{Symbol}", year="1996", howpublished="\url{https://reference.wolfram.com/language/ref/Symbol.html}", note=[Accessed: 22-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_symbol, organization={Wolfram Research}, title={Symbol}, year={1996}, url={https://reference.wolfram.com/language/ref/Symbol.html}, note=[Accessed: 22-November-2024 ]}