66 lines
1.7 KiB
Text
66 lines
1.7 KiB
Text
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class::Boolean
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summary:: abstract class whose instances represent a logical value
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categories::Core
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related:: Reference/Control-Structures
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description::
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Boolean is the superclass of link::Classes/True:: and link::Classes/False:: which are the concrete realizations.
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In code True and False are represented by the literal values code::true:: and code::false::.
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instanceMethods::
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private:: while
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private:: storeOn
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private:: trace
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private:: printOn
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private:: archiveAsCompileString
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method::xor
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returns:: the exclusive or of the receiver and another Boolean.
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method::and
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If the receiver is true then answer the evaluation of function.
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If the receiver is false then function is not evaluated and the message answers false.
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method::or
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If the receiver is false then answer the evaluation of function.
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If the receiver is true then function is not evaluated and the message answers true.
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method::&&
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returns:: true if the receiver is true and aBoolean is true.
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method::||
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returns:: true if either the receiver is true or aBoolean is true.
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method::nand
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returns:: true unless both the operands are true (Sheffer stroke)
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method::not
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returns:: true if the receiver is false, and false if the receiver is true.
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method::if
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If the receiver is true, answer the evaluation of the trueFunc. If the receiver is false, answer the evaluation of the falseFunc.
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method::asInteger
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method::binaryValue
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returns:: 1 if the receiver is true, and 0 if the receiver is false.
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method::asBoolean
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method::booleanValue
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Returns:: The receiver. The same message is understood by link::Classes/SimpleNumber:: and can be used to convert it to boolean.
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method::keywordWarnings
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turn on/off warnings if a keyword argument is not found
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