diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/manual/expressions/language-constructs.xml | 15 | ||||
| -rw-r--r-- | doc/manual/expressions/language-operators.xml | 40 | ||||
| -rw-r--r-- | doc/manual/expressions/language-values.xml | 14 |
3 files changed, 54 insertions, 15 deletions
diff --git a/doc/manual/expressions/language-constructs.xml b/doc/manual/expressions/language-constructs.xml index fe69dba837a1..2f0027d479cd 100644 --- a/doc/manual/expressions/language-constructs.xml +++ b/doc/manual/expressions/language-constructs.xml @@ -333,7 +333,20 @@ with (import ./definitions.nix); ...</programlisting> makes all attributes defined in the file <filename>definitions.nix</filename> available as if they were defined -locally in a <literal>rec</literal>-expression.</para> +locally in a <literal>let</literal>-expression.</para> + +<para>The bindings introduced by <literal>with</literal> do not shadow bindings +introduced by other means, e.g. + +<programlisting> +let a = 3; in with { a = 1; }; let a = 4; in with { a = 2; }; ...</programlisting> + +establishes the same scope as + +<programlisting> +let a = 1; in let a = 2; in let a = 3; in let a = 4; in ...</programlisting> + +</para> </simplesect> diff --git a/doc/manual/expressions/language-operators.xml b/doc/manual/expressions/language-operators.xml index a3323ced4c50..f1f75093461b 100644 --- a/doc/manual/expressions/language-operators.xml +++ b/doc/manual/expressions/language-operators.xml @@ -41,6 +41,11 @@ weakest binding).</para> argument <replaceable>e2</replaceable>.</entry> </row> <row> + <entry><literal>-</literal> <replaceable>e</replaceable></entry> + <entry>none</entry> + <entry>Arithmetic negation.</entry> + </row> + <row> <entry><replaceable>e</replaceable> <literal>?</literal> <replaceable>attrpath</replaceable></entry> <entry>none</entry> @@ -55,13 +60,24 @@ weakest binding).</para> <entry>List concatenation.</entry> </row> <row> - <entry><replaceable>e1</replaceable> <literal>+</literal> <replaceable>e2</replaceable></entry> + <entry> + <replaceable>e1</replaceable> <literal>*</literal> <replaceable>e2</replaceable>, + <replaceable>e1</replaceable> <literal>/</literal> <replaceable>e2</replaceable> + </entry> <entry>left</entry> - <entry>String or path concatenation.</entry> + <entry>Arithmetic multiplication and division.</entry> </row> <row> - <entry><literal>!</literal> <replaceable>e</replaceable></entry> + <entry> + <replaceable>e1</replaceable> <literal>+</literal> <replaceable>e2</replaceable>, + <replaceable>e1</replaceable> <literal>-</literal> <replaceable>e2</replaceable> + </entry> <entry>left</entry> + <entry>Arithmetic addition and subtraction. String or path concatenation (only by <literal>+</literal>).</entry> + </row> + <row> + <entry><literal>!</literal> <replaceable>e</replaceable></entry> + <entry>none</entry> <entry>Boolean negation.</entry> </row> <row> @@ -75,16 +91,22 @@ weakest binding).</para> attributes).</entry> </row> <row> - <entry><replaceable>e1</replaceable> <literal>==</literal> - <replaceable>e2</replaceable></entry> + <entry> + <replaceable>e1</replaceable> <literal><</literal> <replaceable>e2</replaceable>, + <replaceable>e1</replaceable> <literal>></literal> <replaceable>e2</replaceable>, + <replaceable>e1</replaceable> <literal><=</literal> <replaceable>e2</replaceable>, + <replaceable>e1</replaceable> <literal>>=</literal> <replaceable>e2</replaceable> + </entry> <entry>none</entry> - <entry>Equality.</entry> + <entry>Arithmetic comparison.</entry> </row> <row> - <entry><replaceable>e1</replaceable> <literal>!=</literal> - <replaceable>e2</replaceable></entry> + <entry> + <replaceable>e1</replaceable> <literal>==</literal> <replaceable>e2</replaceable>, + <replaceable>e1</replaceable> <literal>!=</literal> <replaceable>e2</replaceable> + </entry> <entry>none</entry> - <entry>Inequality.</entry> + <entry>Equality and inequality.</entry> </row> <row> <entry><replaceable>e1</replaceable> <literal>&&</literal> diff --git a/doc/manual/expressions/language-values.xml b/doc/manual/expressions/language-values.xml index 67da688a4fc5..bb2090c881fd 100644 --- a/doc/manual/expressions/language-values.xml +++ b/doc/manual/expressions/language-values.xml @@ -98,13 +98,17 @@ configureFlags = " <para>Since <literal>${</literal> and <literal>''</literal> have special meaning in indented strings, you need a way to quote them. - <literal>${</literal> can be escaped by prefixing it with + <literal>$</literal> can be escaped by prefixing it with <literal>''</literal> (that is, two single quotes), i.e., - <literal>''${</literal>. <literal>''</literal> can be escaped by + <literal>''$</literal>. <literal>''</literal> can be escaped by prefixing it with <literal>'</literal>, i.e., - <literal>'''</literal>. Finally, linefeed, carriage-return and - tab characters can be written as <literal>''\n</literal>, - <literal>''\r</literal>, <literal>''\t</literal>.</para> + <literal>'''</literal>. <literal>$</literal> removes any special meaning + from the following <literal>$</literal>. Linefeed, carriage-return and tab + characters can be written as <literal>''\n</literal>, + <literal>''\r</literal>, <literal>''\t</literal>, and <literal>''\</literal> + escapes any other character. + + </para> <para>Indented strings are primarily useful in that they allow multi-line string literals to follow the indentation of the |