469 lines
No EOL
9.5 KiB
HTML
469 lines
No EOL
9.5 KiB
HTML
<!DOCTYPE HTML>
|
|
<HTML LANG="en-us"
|
|
><HEAD
|
|
><TITLE
|
|
>import | Common Lisp Nova Spec</TITLE
|
|
><META CHARSET="US-ASCII"
|
|
><LINK REL="canonical" HREF="f_import.html"
|
|
><LINK REL="next" HREF="f_list-all-packages.html" TYPE="text/html" TITLE="list-all-packages"
|
|
><LINK REL="prev" HREF="f_find-all-symbols.html" TYPE="text/html" TITLE="find-all-symbols"
|
|
><LINK REL="up" HREF="11_2_Packages_Dictionary.html" TYPE="text/html" TITLE="11.2 Packages Dictionary"
|
|
><LINK REL="start" HREF="index.html" TYPE="text/html" TITLE="Common Lisp Nova Spec"
|
|
><META NAME="VIEWPORT" CONTENT="width=device-width, initial-scale=1.0"
|
|
><LINK REL="STYLESHEET" HREF="dpans.css%3F3909942064.css"
|
|
><SCRIPT SRC="dpans.js%3F3909942064"
|
|
></SCRIPT
|
|
><SCRIPT SRC="apropos.js%3F3909942064"
|
|
></SCRIPT
|
|
></HEAD
|
|
><BODY
|
|
><DIV
|
|
><DIV CLASS="topnav"
|
|
><DIV CLASS="breadcrumb"
|
|
><SPAN CLASS="breadcrumb-item"
|
|
><A HREF="index.html"
|
|
>Common Lisp Nova Spec</A
|
|
></SPAN
|
|
> <SPAN CLASS="breadcrumb-item"
|
|
>→ <A HREF="11_Packages.html"
|
|
>11. Packages</A
|
|
></SPAN
|
|
> <SPAN CLASS="breadcrumb-item"
|
|
>→ <A HREF="11_2_Packages_Dictionary.html"
|
|
>11.2 Packages Dictionary</A
|
|
></SPAN
|
|
> <SPAN CLASS="breadcrumb-item"
|
|
>→ <A HREF="f_import.html"
|
|
>import</A
|
|
></SPAN
|
|
></DIV
|
|
><DIV CLASS="apropos"
|
|
><DIV CLASS="apropos-io"
|
|
><A HREF="f_find-all-symbols.html" CLASS="prev"
|
|
>←</A
|
|
><SPAN ID="apropos-label"
|
|
>Apropos </SPAN
|
|
><INPUT ID="apropos" AUTOFOCUS="AUTOFOCUS" PLACEHOLDER="Type here to search" ONINPUT="aproposInput(this);" ONKEYUP="aproposKeyup(event);" ONCHANGE="aproposChange(this);" ONFOCUS="aproposFocus(this);" ONFOCUSOUT="aproposFocusout(this);"
|
|
><A HREF="f_list-all-packages.html" CLASS="next"
|
|
>→</A
|
|
></DIV
|
|
><DIV ID="apropos-res"
|
|
></DIV
|
|
></DIV
|
|
></DIV
|
|
><DIV CLASS="matter"
|
|
><DIV CLASS="com"
|
|
><DIV CLASS="begincom"
|
|
><HR
|
|
><TABLE WIDTH="100%" CELLSPACING="0" CELLPADDING="0"
|
|
><TR
|
|
><TD ALIGN="LEFT" VALIGN="BASELINE" WIDTH="100%" CLASS="name"
|
|
><SPAN CLASS="idx" DATA-KIND="idxref" DATA-TERM="import"
|
|
></SPAN
|
|
><B
|
|
>import</B
|
|
></TD
|
|
><TD ALIGN="RIGHT" VALIGN="BASELINE" WIDTH="0" NOWRAP="NOWRAP" CLASS="ftype"
|
|
><I
|
|
>Function</I
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
></DIV
|
|
><UL CLASS="subtoc"
|
|
></UL
|
|
><DL
|
|
><DT
|
|
><B
|
|
>Syntax</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
><B
|
|
>import</B
|
|
> <SPAN CLASS="cmssi"
|
|
>symbols</SPAN
|
|
> <SPAN CLASS="cmtt"
|
|
>&optional</SPAN
|
|
> <SPAN CLASS="cmssi"
|
|
>package</SPAN
|
|
> <SPAN CLASS="arrow"
|
|
>→</SPAN
|
|
> <SPAN CLASS="misc"
|
|
><B
|
|
>t</B
|
|
></SPAN
|
|
></P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Arguments and Values</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
><VAR CLASS="param"
|
|
>symbols</VAR
|
|
> — a <A HREF="26_1_Glossary.html#designator"
|
|
><EM CLASS="term"
|
|
>designator</EM
|
|
></A
|
|
> for a <A HREF="26_1_Glossary.html#list"
|
|
><EM CLASS="term"
|
|
>list</EM
|
|
></A
|
|
> of <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbols</EM
|
|
></A
|
|
>. </P
|
|
><P CLASS="j"
|
|
><VAR CLASS="param"
|
|
>package</VAR
|
|
> — a <A HREF="26_1_Glossary.html#package_designator"
|
|
><EM CLASS="term"
|
|
>package designator</EM
|
|
></A
|
|
>. The default is the <A HREF="26_1_Glossary.html#current_package"
|
|
><EM CLASS="term"
|
|
>current package</EM
|
|
></A
|
|
>.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Description</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
><A HREF="f_import.html" CLASS="funref"
|
|
><B
|
|
>import</B
|
|
></A
|
|
> adds <VAR CLASS="param"
|
|
>symbol</VAR
|
|
> or <VAR CLASS="param"
|
|
>symbols</VAR
|
|
> to the internals of <VAR CLASS="param"
|
|
>package</VAR
|
|
>, checking for name conflicts with existing <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbols</EM
|
|
></A
|
|
> either <A HREF="26_1_Glossary.html#present"
|
|
><EM CLASS="term"
|
|
>present</EM
|
|
></A
|
|
> in <VAR CLASS="param"
|
|
>package</VAR
|
|
> or <A HREF="26_1_Glossary.html#accessible"
|
|
><EM CLASS="term"
|
|
>accessible</EM
|
|
></A
|
|
> to it. Once the <VAR CLASS="param"
|
|
>symbols</VAR
|
|
> have been <A HREF="26_1_Glossary.html#import"
|
|
><EM CLASS="term"
|
|
>imported</EM
|
|
></A
|
|
>, they may be referenced in the <A HREF="26_1_Glossary.html#import"
|
|
><EM CLASS="term"
|
|
>importing</EM
|
|
></A
|
|
> <VAR CLASS="param"
|
|
>package</VAR
|
|
> without the use of a <A HREF="26_1_Glossary.html#package_prefix"
|
|
><EM CLASS="term"
|
|
>package prefix</EM
|
|
></A
|
|
> when using the <A HREF="26_1_Glossary.html#Lisp_reader"
|
|
><EM CLASS="term"
|
|
>Lisp reader</EM
|
|
></A
|
|
>. </P
|
|
><P CLASS="j"
|
|
>A name conflict in <A HREF="f_import.html" CLASS="funref"
|
|
><B
|
|
>import</B
|
|
></A
|
|
> between the <VAR CLASS="param"
|
|
>symbol</VAR
|
|
> being imported and a symbol inherited from some other <A HREF="26_1_Glossary.html#package"
|
|
><EM CLASS="term"
|
|
>package</EM
|
|
></A
|
|
> can be resolved in favor of the <VAR CLASS="param"
|
|
>symbol</VAR
|
|
> being <A HREF="26_1_Glossary.html#import"
|
|
><EM CLASS="term"
|
|
>imported</EM
|
|
></A
|
|
> by making it a shadowing symbol, or in favor of the <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> already <A HREF="26_1_Glossary.html#accessible"
|
|
><EM CLASS="term"
|
|
>accessible</EM
|
|
></A
|
|
> by not doing the <A HREF="f_import.html" CLASS="funref"
|
|
><B
|
|
>import</B
|
|
></A
|
|
>. A name conflict in <A HREF="f_import.html" CLASS="funref"
|
|
><B
|
|
>import</B
|
|
></A
|
|
> with a <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> already <A HREF="26_1_Glossary.html#present"
|
|
><EM CLASS="term"
|
|
>present</EM
|
|
></A
|
|
> in the <VAR CLASS="param"
|
|
>package</VAR
|
|
> may be resolved by uninterning that <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
>, or by not doing the <A HREF="f_import.html" CLASS="funref"
|
|
><B
|
|
>import</B
|
|
></A
|
|
>. </P
|
|
><P CLASS="j"
|
|
>The imported <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> is not automatically exported from the <A HREF="26_1_Glossary.html#current_package"
|
|
><EM CLASS="term"
|
|
>current package</EM
|
|
></A
|
|
>, but if it is already <A HREF="26_1_Glossary.html#present"
|
|
><EM CLASS="term"
|
|
>present</EM
|
|
></A
|
|
> and external, then the fact that it is external is not changed. If any <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> to be <A HREF="26_1_Glossary.html#import"
|
|
><EM CLASS="term"
|
|
>imported</EM
|
|
></A
|
|
> has no home package (<I CLASS="i"
|
|
><I
|
|
>i.e.</I
|
|
></I
|
|
>, <SPAN CLASS="cmtt"
|
|
>(symbol-package</SPAN
|
|
> <VAR CLASS="param"
|
|
>symbol</VAR
|
|
><SPAN CLASS="cmtt"
|
|
>)</SPAN
|
|
> <SPAN CLASS="arrow"
|
|
>→</SPAN
|
|
> <SPAN CLASS="cmtt"
|
|
>nil</SPAN
|
|
>), <A HREF="f_import.html" CLASS="funref"
|
|
><B
|
|
>import</B
|
|
></A
|
|
> sets the <A HREF="26_1_Glossary.html#home_package"
|
|
><EM CLASS="term"
|
|
>home package</EM
|
|
></A
|
|
> of the <VAR CLASS="param"
|
|
>symbol</VAR
|
|
> to <VAR CLASS="param"
|
|
>package</VAR
|
|
>. </P
|
|
><P CLASS="j"
|
|
>If the <VAR CLASS="param"
|
|
>symbol</VAR
|
|
> is already <A HREF="26_1_Glossary.html#present"
|
|
><EM CLASS="term"
|
|
>present</EM
|
|
></A
|
|
> in the importing <VAR CLASS="param"
|
|
>package</VAR
|
|
>, <A HREF="f_import.html" CLASS="funref"
|
|
><B
|
|
>import</B
|
|
></A
|
|
> has no effect.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Examples</B
|
|
></DT
|
|
><DD
|
|
><PRE CLASS="screen"
|
|
>(import 'common-lisp::car (make-package 'temp :use nil)) <SPAN CLASS="cmsy"
|
|
><SPAN CLASS="arrow"
|
|
>→</SPAN
|
|
></SPAN
|
|
> T
|
|
(find-symbol "CAR" 'temp) <SPAN CLASS="cmsy"
|
|
><SPAN CLASS="arrow"
|
|
>→</SPAN
|
|
></SPAN
|
|
> CAR, :INTERNAL
|
|
(find-symbol "CDR" 'temp) <SPAN CLASS="cmsy"
|
|
><SPAN CLASS="arrow"
|
|
>→</SPAN
|
|
></SPAN
|
|
> NIL, NIL</PRE
|
|
><P CLASS="j"
|
|
>The form <CODE CLASS="f"
|
|
>(import 'editor:buffer)</CODE
|
|
> takes the external symbol named <CODE CLASS="f"
|
|
>buffer</CODE
|
|
> in the <SPAN CLASS="packref"
|
|
><SPAN CLASS="cmtt"
|
|
>EDITOR</SPAN
|
|
></SPAN
|
|
> <A HREF="26_1_Glossary.html#package"
|
|
><EM CLASS="term"
|
|
>package</EM
|
|
></A
|
|
> (this symbol was located when the form was read by the <A HREF="26_1_Glossary.html#Lisp_reader"
|
|
><EM CLASS="term"
|
|
>Lisp reader</EM
|
|
></A
|
|
>) and adds it to the <A HREF="26_1_Glossary.html#current_package"
|
|
><EM CLASS="term"
|
|
>current package</EM
|
|
></A
|
|
> as an <A HREF="26_1_Glossary.html#internal_symbol"
|
|
><EM CLASS="term"
|
|
>internal symbol</EM
|
|
></A
|
|
>. The symbol <CODE CLASS="f"
|
|
>buffer</CODE
|
|
> is then <A HREF="26_1_Glossary.html#present"
|
|
><EM CLASS="term"
|
|
>present</EM
|
|
></A
|
|
> in the <A HREF="26_1_Glossary.html#current_package"
|
|
><EM CLASS="term"
|
|
>current package</EM
|
|
></A
|
|
>.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Side Effects</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
>The package system is modified.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Affected By</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
>Current state of the package system.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Exceptional Situations</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
><A HREF="f_import.html" CLASS="funref"
|
|
><B
|
|
>import</B
|
|
></A
|
|
> signals a <A HREF="26_1_Glossary.html#correctable"
|
|
><EM CLASS="term"
|
|
>correctable</EM
|
|
></A
|
|
> error of <A HREF="26_1_Glossary.html#type"
|
|
><EM CLASS="term"
|
|
>type</EM
|
|
></A
|
|
> <A HREF="t_package-error.html" CLASS="typeref"
|
|
><B
|
|
>package-error</B
|
|
></A
|
|
> if any of the <VAR CLASS="param"
|
|
>symbols</VAR
|
|
> to be <A HREF="26_1_Glossary.html#import"
|
|
><EM CLASS="term"
|
|
>imported</EM
|
|
></A
|
|
> has the <A HREF="26_1_Glossary.html#same"
|
|
><EM CLASS="term"
|
|
>same</EM
|
|
></A
|
|
> <A HREF="26_1_Glossary.html#name"
|
|
><EM CLASS="term"
|
|
>name</EM
|
|
></A
|
|
> (under <A HREF="f_string_eq.html" CLASS="funref"
|
|
><B
|
|
>string=</B
|
|
></A
|
|
>) as some distinct <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> (under <A HREF="f_eql.html" CLASS="funref"
|
|
><B
|
|
>eql</B
|
|
></A
|
|
>) already <A HREF="26_1_Glossary.html#accessible"
|
|
><EM CLASS="term"
|
|
>accessible</EM
|
|
></A
|
|
> in the <VAR CLASS="param"
|
|
>package</VAR
|
|
>, even if the conflict is with a <A HREF="26_1_Glossary.html#shadowing_symbol"
|
|
><EM CLASS="term"
|
|
>shadowing symbol</EM
|
|
></A
|
|
> of the <VAR CLASS="param"
|
|
>package</VAR
|
|
>.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>See Also</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
><A HREF="f_shadow.html" CLASS="funref"
|
|
><B
|
|
>shadow</B
|
|
></A
|
|
>, <A HREF="f_export.html" CLASS="funref"
|
|
><B
|
|
>export</B
|
|
></A
|
|
></P
|
|
></DD
|
|
></DL
|
|
></DIV
|
|
></DIV
|
|
><DIV CLASS="footer"
|
|
><DIV CLASS="btmnav"
|
|
><A HREF="f_find-all-symbols.html" CLASS="prev"
|
|
>←</A
|
|
><A HREF="f_list-all-packages.html" CLASS="next"
|
|
>→</A
|
|
></DIV
|
|
><DIV CLASS="trail"
|
|
>Conversion to HTML copyright 2023 by Gilbert Baumann</DIV
|
|
></DIV
|
|
></DIV
|
|
><SCRIPT
|
|
>domReady();</SCRIPT
|
|
></BODY
|
|
></HTML
|
|
> |