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<a class = mltona href="Home">MLton MLTONWIKIVERSION</a>
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Identifier
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In <a href="StandardML">Standard ML</a>, there are syntactically two kinds of identifiers.
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Alphanumeric: starts with a letter or prime (<tt>'</tt>) and is followed by letters, digits, primes and underbars (<tt>_</tt>).
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Examples: <tt>abc</tt>, <tt>ABC123</tt>, <tt>Abc_123</tt>, <tt>'a</tt>.
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Symbolic: a sequence of the following
<pre> ! % & $ # + - / : < = > ? @ | ~ ` ^ | *</pre>
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Examples: <tt>+=</tt>, <tt><=</tt>, <tt>>></tt>, <tt>$</tt>.
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With the exception of <tt>=</tt>, reserved words can not be identifiers.
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There are a number of different classes of identifiers, some of which have additional syntactic rules.
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Identifiers not starting with a prime.
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value identifier (includes variables and constructors)
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type constructor
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structure identifier
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signature identifier
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functor identifier
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Identifiers starting with a prime.
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type variable (must start with prime)
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Identifiers + numeric labels (<tt>1</tt>, <tt>2</tt>, ...).
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record label
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Last edited on 2005-01-18 15:02:21 by <span title="cfs32.cs.cornell.edu"><a href="MatthewFluet">MatthewFluet</a></span>.
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