Re: ! function

Path	csiph.com!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!news.solani.org!.POSTED!not-for-mail
From	"Christoph M. Becker" <cmbecker69@arcor.de>
Newsgroups	comp.lang.javascript
Subject	Re: ! function
Date	Thu, 07 May 2015 21:31:56 +0200
Organization	solani.org
Lines	28
Message-ID	<migej4$beq$1@solani.org> (permalink)
References	<ddSdncub_tOuptbInZ2dnUVZ8gidnZ2d@westnet.com.au> <mig09m$not$1@speranza.aioe.org> <XnsA493D6D7F9E67eejj99@194.109.133.246>
Mime-Version	1.0
Content-Type	text/plain; charset=utf-8
Content-Transfer-Encoding	7bit
X-Trace	solani.org 1431027108 11738 eJwNysEBwEAEBMCWDmtPykHov4Rk3uNGYV/QCV/fXhyIxYNivKOZqFEJ80py+6j/4djc7lbmBxYbEOw= (7 May 2015 19:31:48 GMT)
X-Complaints-To	abuse@news.solani.org
NNTP-Posting-Date	Thu, 7 May 2015 19:31:48 +0000 (UTC)
User-Agent	Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0
X-User-ID	eJwNyckBgEAIA8CW0CVByuEw/Zeg8x0cXpxwgg5B5u+kngaIezPdd6trA2Y61JKDfyppnREfIEkRFg==
In-Reply-To	<XnsA493D6D7F9E67eejj99@194.109.133.246>
Cancel-Lock	sha1:3DTIyn/KJwIqQC0qGbZNRbsQuf8=
X-NNTP-Posting-Host	eJwFwQkRADAIAzBLPKWAHI5t/iUsCadyEwwiXjxgUoaQvqxUdxfrLeRRu2LjKm3QOrdkfeMD8rgPog==
Xref	csiph.com comp.lang.javascript:27556

Show key headers only | View raw

Evertjan. wrote:

> Joao Rodrigues <groups_jr-1@yahoo.com.br> wrote on 07 mei 2015 in 
> comp.lang.javascript:
> 
>> An Immediately-Invoked Function Expression (IIFE) is usually written as:
>> (function() { /* etc. */ })();
>>
>> But we can use unary operators instead of the wrapping parentheses too,
>> if we don't care about the return value of the IIFE:
>>
>> Even the void operator can be used:
>> void function () { /*...*/ }();
> 
> Even nothing can be used,
> the final parenteses with parameters work then too,
> try:
> 
> alert( function(a){alert(a)} ) // function(a){alert(a)}
> // [no execution of the function here]

That works, because the IIFE is parsed in an expression context.  If the
IIFE is placed where a statement is expected, that would be a syntax
error. The whole point of using parens or an operator is to enforce an
expression context.

-- 
Christoph M. Becker

Thread

! function Andrew Poulos <ap_prog@hotmail.com> - 2015-05-07 20:15 +1000
  Re: ! function "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-07 13:04 +0200
  Re: ! function "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2015-05-07 05:02 -0700
  Re: ! function Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-07 12:27 -0300
    Re: ! function JJ <jj4public@vfemail.net> - 2015-05-08 00:09 +0700
    Re: ! function "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-07 21:07 +0200
      Re: ! function "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-05-07 21:31 +0200
        Re: ! function "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-07 22:20 +0200
          Re: ! function "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-05-07 23:27 +0200
            Re: ! function "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-05-08 00:26 +0200
              Re: ! function "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-08 11:00 +0200
                Re: ! function James Lewis <lewisje@gmail.com> - 2015-06-05 09:10 -0700
          Re: ! function Scott Sauyet <scott.sauyet@gmail.com> - 2015-05-18 13:31 -0700
            Re: ! function "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-05-19 01:39 +0200
              Re: ! function Scott Sauyet <scott.sauyet@gmail.com> - 2015-05-19 05:48 -0700
        Re: ! function Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-07 17:47 -0300
          Re: ! function "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-07 23:22 +0200
            Re: ! function Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-07 19:08 -0300
              Re: ! function "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-08 12:08 +0200

csiph-web