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Javascript ES6 - Check if a Symbol is available in global registry without creating it


Javascript ES6 - Check if a Symbol is available in global registry without creating it

By : Sam Richardson
Date : November 20 2020, 03:01 PM
I think the issue was by ths following ,
Is it possible to check if a symbol is available in global registry?
code :


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WSO2 Governance Registry - Error Creating registry extension file (RXT)

WSO2 Governance Registry - Error Creating registry extension file (RXT)


By : Dmitriy Porollo
Date : March 29 2020, 07:55 AM
seems to work fine Do you get this error when trying to upload the RXT file via the management console? If so, please try adding the RXT file to the following location: G-Reg_home/repository/resources/rxts
What is 'global symbol registry'?

What is 'global symbol registry'?


By : Luiz Fernando de Sou
Date : March 29 2020, 07:55 AM
I hope this helps you . ,
code :
var sym = Symbol();
var sym1 = Symbol("shared");

var sym2 = Symbol("shared");
var sym1 = Symbol.for("shared");

var sym2 = Symbol.for("shared");
Is the global symbol registry directly accessible?

Is the global symbol registry directly accessible?


By : rim ayari
Date : March 29 2020, 07:55 AM
I hope this helps . The window object is very different from the GSR (and less "global" of course).
No, the GSR is not represented as an object that is accessible to JS code, with properties for key-value pairs or so (or as a Map maybe). It cannot be enumerated, if that is what you are looking for. The only ways to access it are Symbol.for and Symbol.keyFor, which suffices to expose the bijective property of the relation.
Javascript Replace with Global not working on Caret Symbol

Javascript Replace with Global not working on Caret Symbol


By : Anantha Teja
Date : March 29 2020, 07:55 AM
it should still fix some issue i have following code for replacing
code :
 temp = temp.replace(/\^/g, '');
 temp = temp.replace(/\^/g, '');
Global Symbol Registry and cross realm symbols

Global Symbol Registry and cross realm symbols


By : user2793669
Date : March 29 2020, 07:55 AM
seems to work fine I'm trying to understand the difference between Symbol() and Symbol.for() in regard to cross realm. , The distinction here is that when you do
code :
const value = content.obj[content.sym]
<iframe srcdoc="<script>var sym = Symbol('foo');</script>">
  </iframe>
<script>
  const obj = {};
  const sym = Symbol('foo');
  obj[sym] = 'value';

  const iframe = document.querySelector('iframe');
  const content = iframe.contentWindow;
  const value = obj[content.sym];
  console.log(value); // undefined
</script>
<iframe srcdoc="<script>var sym = Symbol('foo');</script>">
  </iframe>
<script>
  const obj = {};
  const crossRealmSymbol = document.querySelector('iframe').contentWindow.sym;
  obj[crossRealmSymbol] = 'value';
  console.log(obj[crossRealmSymbol]);
</script>
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