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What does the symbol '@' mean in JavaScriptCore?
What characters are valid for JavaScript variable names?What does the at symbol (@) do in ES6 javascript? (ECMAScript 2015)Does the '@' symbol have special meaning in Javascript, Coffeescript or Jquery?What is the most efficient way to deep clone an object in JavaScript?What is the scope of variables in JavaScript?How does JavaScript .prototype work?What is the !! (not not) operator in JavaScript?What is the JavaScript version of sleep()?What does “javascript:void(0)” mean?What does “use strict” do in JavaScript, and what is the reasoning behind it?What is the difference between call and apply?What is JSONP, and why was it created?Why does Google prepend while(1); to their JSON responses?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I was reading JavaScriptCore' s source code and I stumbled upon this after a short while. The code sort of makes sense, but what happens exactly when '@' is used ?
[...]
if (@isArray(currentElement))
constructor = currentElement.constructor;
[...]
if (@isArrayConstructor(constructor) && @Array !== constructor)
constructor = @undefined;
else if (@isObject(constructor))
constructor = constructor.@speciesSymbol;
if (constructor === null)
constructor = @Array;
[...]
I checked this and this but they didn't help much ('@' is not a reserved character in Javascript)
javascript webkit javascriptcore
asked Mar 27 at 19:41
shxdowshxdow
111 silver badge3 bronze badges
add a comment |
I was reading JavaScriptCore' s source code and I stumbled upon this after a short while. The code sort of makes sense, but what happens exactly when '@' is used ?
[...]
if (@isArray(currentElement))
constructor = currentElement.constructor;
[...]
if (@isArrayConstructor(constructor) && @Array !== constructor)
constructor = @undefined;
else if (@isObject(constructor))
constructor = constructor.@speciesSymbol;
if (constructor === null)
constructor = @Array;
[...]
I checked this and this but they didn't help much ('@' is not a reserved character in Javascript)
javascript webkit javascriptcore
asked Mar 27 at 19:41
shxdowshxdow
111 silver badge3 bronze badges
Possibly related: What does the at symbol (@) do in ES6 javascript? (ECMAScript 2015)
– p.s.w.g
Mar 27 at 19:43
The first link I posted was probably outdated, hence why I concluded it isn't a keyword. They may be indeed decorators. I can't find where they are defined inside the code base though
– shxdow
Mar 27 at 20:06
add a comment |
I was reading JavaScriptCore' s source code and I stumbled upon this after a short while. The code sort of makes sense, but what happens exactly when '@' is used ?
[...]
if (@isArray(currentElement))
constructor = currentElement.constructor;
[...]
if (@isArrayConstructor(constructor) && @Array !== constructor)
constructor = @undefined;
else if (@isObject(constructor))
constructor = constructor.@speciesSymbol;
if (constructor === null)
constructor = @Array;
[...]
I checked this and this but they didn't help much ('@' is not a reserved character in Javascript)
javascript webkit javascriptcore
asked Mar 27 at 19:41
shxdowshxdow
111 silver badge3 bronze badges
I was reading JavaScriptCore' s source code and I stumbled upon this after a short while. The code sort of makes sense, but what happens exactly when '@' is used ?
[...]
if (@isArray(currentElement))
constructor = currentElement.constructor;
[...]
if (@isArrayConstructor(constructor) && @Array !== constructor)
constructor = @undefined;
else if (@isObject(constructor))
constructor = constructor.@speciesSymbol;
if (constructor === null)
constructor = @Array;
[...]
I checked this and this but they didn't help much ('@' is not a reserved character in Javascript)
javascript webkit javascriptcore
javascript webkit javascriptcore
asked Mar 27 at 19:41
shxdowshxdow
111 silver badge3 bronze badges
asked Mar 27 at 19:41
shxdowshxdow
111 silver badge3 bronze badges
asked Mar 27 at 19:41
shxdowshxdow
111 silver badge3 bronze badges
asked Mar 27 at 19:41
shxdowshxdow
111 silver badge3 bronze badges
asked Mar 27 at 19:41
shxdowshxdow
111 silver badge3 bronze badges
111 silver badge3 bronze badges
Possibly related: What does the at symbol (@) do in ES6 javascript? (ECMAScript 2015)
– p.s.w.g
Mar 27 at 19:43
The first link I posted was probably outdated, hence why I concluded it isn't a keyword. They may be indeed decorators. I can't find where they are defined inside the code base though
– shxdow
Mar 27 at 20:06
add a comment |
Possibly related: What does the at symbol (@) do in ES6 javascript? (ECMAScript 2015)
– p.s.w.g
Mar 27 at 19:43
The first link I posted was probably outdated, hence why I concluded it isn't a keyword. They may be indeed decorators. I can't find where they are defined inside the code base though
– shxdow
Mar 27 at 20:06
Possibly related: What does the at symbol (@) do in ES6 javascript? (ECMAScript 2015)
– p.s.w.g
Mar 27 at 19:43
Possibly related: What does the at symbol (@) do in ES6 javascript? (ECMAScript 2015)
– p.s.w.g
Mar 27 at 19:43
The first link I posted was probably outdated, hence why I concluded it isn't a keyword. They may be indeed decorators. I can't find where they are defined inside the code base though
– shxdow
Mar 27 at 20:06
The first link I posted was probably outdated, hence why I concluded it isn't a keyword. They may be indeed decorators. I can't find where they are defined inside the code base though
– shxdow
Mar 27 at 20:06
add a comment |
1 Answer
1
active
oldest
votes
I found the answer myself. As @p-s-w-g pointed out, those are decorators. The defintions for the ones I was looking for can be found in:
webkit/Source/JavaScriptCore/runtime/ArrayConstructor.h
inline bool isArray(ExecState* exec, JSValue argumentValue)
if (!argumentValue.isObject())
return false;
JSObject* argument = jsCast<JSObject*>(argumentValue);
if (argument->type() == ArrayType
answered Mar 27 at 20:25
shxdowshxdow
111 silver badge3 bronze badges
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I found the answer myself. As @p-s-w-g pointed out, those are decorators. The defintions for the ones I was looking for can be found in:
webkit/Source/JavaScriptCore/runtime/ArrayConstructor.h
inline bool isArray(ExecState* exec, JSValue argumentValue)
if (!argumentValue.isObject())
return false;
JSObject* argument = jsCast<JSObject*>(argumentValue);
if (argument->type() == ArrayType
answered Mar 27 at 20:25
shxdowshxdow
111 silver badge3 bronze badges
add a comment |
I found the answer myself. As @p-s-w-g pointed out, those are decorators. The defintions for the ones I was looking for can be found in:
webkit/Source/JavaScriptCore/runtime/ArrayConstructor.h
inline bool isArray(ExecState* exec, JSValue argumentValue)
if (!argumentValue.isObject())
return false;
JSObject* argument = jsCast<JSObject*>(argumentValue);
if (argument->type() == ArrayType
answered Mar 27 at 20:25
shxdowshxdow
111 silver badge3 bronze badges
add a comment |
I found the answer myself. As @p-s-w-g pointed out, those are decorators. The defintions for the ones I was looking for can be found in:
webkit/Source/JavaScriptCore/runtime/ArrayConstructor.h
inline bool isArray(ExecState* exec, JSValue argumentValue)
if (!argumentValue.isObject())
return false;
JSObject* argument = jsCast<JSObject*>(argumentValue);
if (argument->type() == ArrayType
answered Mar 27 at 20:25
shxdowshxdow
111 silver badge3 bronze badges
I found the answer myself. As @p-s-w-g pointed out, those are decorators. The defintions for the ones I was looking for can be found in:
webkit/Source/JavaScriptCore/runtime/ArrayConstructor.h
inline bool isArray(ExecState* exec, JSValue argumentValue)
if (!argumentValue.isObject())
return false;
JSObject* argument = jsCast<JSObject*>(argumentValue);
if (argument->type() == ArrayType
answered Mar 27 at 20:25
shxdowshxdow
111 silver badge3 bronze badges
answered Mar 27 at 20:25
shxdowshxdow
111 silver badge3 bronze badges
answered Mar 27 at 20:25
shxdowshxdow
111 silver badge3 bronze badges
answered Mar 27 at 20:25
shxdowshxdow
111 silver badge3 bronze badges
111 silver badge3 bronze badges
add a comment |
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Possibly related: What does the at symbol (@) do in ES6 javascript? (ECMAScript 2015)
– p.s.w.g
Mar 27 at 19:43
The first link I posted was probably outdated, hence why I concluded it isn't a keyword. They may be indeed decorators. I can't find where they are defined inside the code base though
– shxdow
Mar 27 at 20:06