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Jul 9, 2024
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12 changes: 8 additions & 4 deletions xml/chapter1/section1/subsection6.xml
Original file line number Diff line number Diff line change
Expand Up @@ -231,7 +231,9 @@ abs(-5);
<META>alternative-expression</META> and returns its value as the value of the
conditional.<FOOTNOTE>
<INDEX>conditional expression<SUBINDEX>non-boolean value as predicate</SUBINDEX></INDEX>
Conditionals in full JavaScript accept any value, not just a boolean, as the result of evaluating
Conditionals
<LABEL NAME="foot:any-value-as-predicate"/>
in full JavaScript accept any value, not just a boolean, as the result of evaluating
the <META>predicate</META> expression (see footnote<SPACE/><REF NAME="foot:truthy"/>
in section<SPACE/><REF NAME="sec:eval-data-structures"/> for details). The programs in this book
use only boolean values as predicates of conditionals.
Expand Down Expand Up @@ -591,8 +593,10 @@ $\vdots$
<INDEX>evaluation<SUBINDEX>of <JAVASCRIPTINLINE>&amp;&amp;</JAVASCRIPTINLINE><ORDER>of ;1</ORDER></SUBINDEX><FRAGILE/></INDEX>
<EM>logical conjunction</EM>, meaning roughly
the same as the English word <QUOTE>and.</QUOTE>
This syntactic form is syntactic sugar<FOOTNOTE>
Syntactic forms that are simply convenient
We assume<FOOTNOTE>This assumption is justified by the restriction mentioned
in footnote<SPACE/><REF NAME="foot:any-value-as-predicate"/>. Full JavaScript
needs to consider the case where the result of evaluating <META>expression</META><LATEXINLINE>$_1$</LATEXINLINE> is neither true nor false.</FOOTNOTE> this syntactic form to be syntactic
sugar<FOOTNOTE>Syntactic forms that are simply convenient
alternative surface structures for things that can be written in more
uniform ways are sometimes called <EM>syntactic sugar</EM>, to use a
phrase coined by
Expand All @@ -617,7 +621,7 @@ $\vdots$
<INDEX>evaluation<SUBINDEX>of {\tt "|"|}<ORDER>of ;2</ORDER></SUBINDEX><FRAGILE/></INDEX>
<EM>logical disjunction</EM>, meaning roughly
the same as the English word <QUOTE>or.</QUOTE>
This syntactic form is syntactic sugar for<BR/>
We assume this syntactic form to be syntactic sugar for<BR/>
<META>expression</META><LATEXINLINE>$_1$</LATEXINLINE> <JAVASCRIPTINLINE>?</JAVASCRIPTINLINE>
<JAVASCRIPTINLINE>true</JAVASCRIPTINLINE> <JAVASCRIPTINLINE>:</JAVASCRIPTINLINE>
<META>expression</META><LATEXINLINE>$_2$</LATEXINLINE>.
Expand Down
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