Understanding the use of Tcl namespace variable -

-

i have namespace variable defined below: 

   namespace eval ::smb::{       variable smbinfo       ------       ------      proc ::smb::smbcreate {name dutport} {         variable smbinfo         global dutports dutport_2 dutports_3 smb          ------         ------         if{"" != [info command smb::$name]} {            return -code error "command name \"$name\" exists"         }         set smbinfo($name -dutport) $dutport

i new tcl , trying understand above piece of code. few questions, please correct me if wrong @ point:

  1. the variable smbinfo defined on top in namespace getting overridden 1 declared in procedure smbcreate. unable figure out objective of line: 

         set smbinfo($name -dutport) $dutport

    i can see 'dutports' defined global not find 'dutport'. have not executed code yet. error?

  2. is ($name - dutport) creating array index variable smbinfo , value of $dutport being set particular array variable?

  3. i have similar code structures in file below

    set smbinfo($name - smbsetdmac) [buildmac1 $smbinfo($from_name-dutport)]

    where buildmac1 procedure. bit explanation of above code might make thing clear.

if missed post in question, kindly point me, edit question. in advance.

  1. the second declaration doesn't override, it's same variable in both cases.
  2. the command syntax error because of space after $name. intent seems to assign value of $dutport member of smbinfo has name "$name -dutport" (where $name replaced variable value).
  3. a similar assignment, here value comes result of command.

there few syntax errors in code, many or few spaces here , there. seems unlikely code has ever been executed.

the purpose of smb::smbcreate command seem to 1) create new command in smb namespace named first parameter (unless such command exists) , 2) store metadata in smbinfo namespace variable, indexed a) name parameter , b) keyword such -dutport or -smbsetdmac.

code implements ad-hoc object-oriented interface. if whitespace issues resolved, should work fine.


Comments

Post a Comment

Popular posts from this blog

java - Run spring boot application error: Cannot instantiate interface org.springframework.context.ApplicationListener -

-
i have spring project , try make use spring boot , run @ embadded tomcat following : https://spring.io/guides/gs/rest-service/ this application //@configuration //@enableaspectjautoproxy @springbootapplication @componentscan(basepackages = "gux.prome") public class application { public static void main(string[] args) { springapplication.run(application.class, args); } } if use maven command: mvn spring-boot:run , project starts fine, need debug , run main method @ intelij, exception occurs: exception in thread "main" java.lang.illegalargumentexception: cannot instantiate interface org.springframework.context.applicationlistener : org.springframework.boot.logging.classpathloggingapplicationlistener @ org.springframework.boot.springapplication.createspringfactoriesinstances(springapplication.java:414) @ org.springframework.boot.springapplication.getspringfactoriesinstances(springapplication.java:394) @ org.springframework.bo...
Read more

reactjs - React router and this.props.children - how to pass state to this.props.children -

-
i'm using react-router first time , don't know how think in yet. here's how i'm loading components in nested routes. entry point .js reactdom.render( <router history={hashhistory} > <route path="/" component={app}> <route path="models" component={content}> </route> </router>, document.getelementbyid('app') ); app.js render: function() { return ( <div> <header /> {this.props.children} </div> ); } so child of app content component sent in. i'm using flux , app.js has state , listens changes, don't know how pass state down this.props.children. before using react-router app.js defines children explicitly, passing state natural don't see how now. using couple of react helper methods can add state, props , whatever else this.props.children render: function() { var children = react.ch...
Read more

Excel VBA "Microsoft Windows Common Controls 6.0 (SP6)" Location Changes -

-
i have excel workbook used generate quotations customers. there main page user inputs data, , there buttons generate various pdfs , send them customer. however, 1 user consistently getting error preventing generating , sending pdfs. i beleive "microsoft windows common controls 6.0 (sp6)". it's installed on users' computers. on mine, location "c:\windows\syswow64\mscomctl.ocx" on others "c:\windows\system32\mscomctl.ocx" the user experiencing issues on 32-bit machine, "mscomctl.ocx" file should in system32. have manually put in there, , pointed common controls reference in vba it. issue seems keep reverting looking in syswow64. since folder doesn't exist, can't find it, , can't produce pdfs. i thought perhaps issue user running older version of office (2007) there users on 2013 , 2016. thought perhaps mixture of 64-bit , 32-bit users. user gets sent workbook other users (as quotation process goes further, gets passed ...
Read more