Spread Close
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Spread Close
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Open-Close spread means: (Spread during the day's Open) minus (Spread during the day's Close) ??
– Nok Imchen
Jul 14 '13 at 23:24
yeah, thats correct.
– zuiqo
Jul 14 '13 at 23:33
Not that phi was wrong, but I suspect the OP was confused by the word "spread". He thought that "spread" could only be used for the ask-minus-bid. It looks like the screenshot is also using "spread" for the high-minus-low and the open-minus-close. These are not related to the bid and the ask at all. The OP's comment to this answer was not correct. The comment seems to say "open-close spread" = (ask at open minus bid at open) - (ask at close minus bid at close). That would be incorrect.
– RaveTheTadpole
Jul 25 '13 at 18:49
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Spread is the difference between Bid and Ask. I'm confused what is High-Low Spread and Open-Close spread?
It's simply the difference between the two values.
High-Low gives you an idea about the total price movement over the tick period, Open-Close gives you an indication of the direction of the move. If Open-Close is negative, the price went up, and vice versa. High-Low obviously is always positive.
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close spread - это... Что такое close spread ?
equities - What is (High-Low) and (Open- Close ) spread ? - Quantitative...
Spread syntax (...) - JavaScript | MDN
The "opening" spread vs The " closing " spread - Forex Spreads - MQL4 and...
close spread 🎓 перевод с английского на русский
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Rest parameters (also
‘ ... ’)
Function.prototype.apply() (also ‘ ... ’)
Spread syntax ( ... ) allows an iterable such as an array
expression or string to be expanded in places where zero or more arguments (for
function calls) or elements (for array literals) are expected, or an object expression
to be expanded in places where zero or more key-value pairs (for object literals) are
expected.
Spread syntax can be used when all elements from an object or array need to be included
in a list of some kind.
In the above example, the defined function takes x , y , and
z as arguments and returns the sum of these values. An array value is also
defined.
When we invoke the function, we pass it all the values in the array using the spread
syntax and the array name — ...numbers .
If the array contained more than three numbers, e.g. [1, 2, 3, 4] , then it
would still work fine, except that all four would be passed, but only the first three
would be used unless you added more arguments to the function, e.g.:
The above example is somewhat rigid; the real value in spread syntax is that it works
with the same value, no matter how many elements are contained in the object, array,
etc.
It is commonly used when you want to add a new item to a local data store, or display
all stored items plus a new addition. A very simple version of this kind of action
could look like so:
In the above example you can rerun the last line as many times as you like, to keep
adding an additional 12 to the end of the array.
For object literals (new in ECMAScript 2018):
Rest syntax looks exactly like spread syntax. In a way, rest syntax is the opposite of
spread syntax. Spread syntax "expands" an array into its elements, while rest syntax
collects multiple elements and "condenses" them into a single element. See
rest parameters .
It is common to use Function.prototype.apply() in cases where you want to
use the elements of an array as arguments to a function.
With spread syntax the above can be written as:
Any argument in the argument list can use spread syntax, and the spread syntax can be
used multiple times.
When calling a constructor with new it's not possible to
directly use an array and apply() ( apply()
does a [[Call]] and not a [[Construct]] ). However, an array
can be easily used with new thanks to spread syntax:
To use new with an array of parameters without spread syntax, you would
have to do it indirectly through partial application:
Without spread syntax, to create a new array using an existing array as one part of it,
the array literal syntax is no longer sufficient and imperative code must be used
instead using a combination of push() ,
splice() , concat() , etc. With spread syntax this becomes much more succinct:
Just like spread for argument lists, ... can be used anywhere in the array
literal, and may be used more than once.
Note: Spread syntax effectively goes one level deep while copying
an array. Therefore, it may be unsuitable for copying multidimensional arrays, as
the following example shows. (The same is true with Object.assign()
and spread syntax.)
Array.prototype.concat() is often used to concatenate an array to the end
of an existing array. Without spread syntax, this is done as:
Array.prototype.unshift() is often used to insert an array of values at
the start of an existing array. Without spread syntax, this is done as:
Note: Unlike unshift() , this creates a new
arr1 , and does not modify the original arr1 array
in-place.
The Rest/Spread
Properties for ECMAScript proposal (ES2018) added spread properties to
object literals . It copies own
enumerable properties from a provided object onto a new object.
Shallow-cloning (excluding prototype) or merging of objects is now possible using a
shorter syntax than Object.assign() .
Note that Object.assign() triggers setters , whereas spread syntax doesn't.
Note that you cannot replace or mimic the Object.assign() function:
In the above example, the spread syntax does not work as one might expect: it spreads
an array of arguments into the object literal, due to the rest parameter.
Objects themselves are not iterable, but they become iterable when used in an Array, or
with iterating functions such as map() , reduce() , and
assign() . When merging 2 objects together with the spread operator, it is
assumed another iterating function is used when the merging occurs.
Spread syntax (other than in the case of spread properties) can be applied only to iterable
objects:
When using spread syntax for function calls, be aware of the possibility of exceeding
the JavaScript engine's argument length limit. See apply() for more details.
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