英語 での Enumerable の使用例とその 日本語 への翻訳
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Programming
Enumerable- same as for data properties.
In loop iterates over all enumerable properties.
Enumerable- if true, then listed in loops, otherwise not listed.
Are there any countable sets that are not computably enumerable?
They are not enumerable, they cannot be accessed.
Description A for… in loop only iterates over enumerable properties.
It copies own enumerable properties from a provided object onto a new object.
If we don't like it, then we can set enumerable: false.
It takes an instance of the enumerable node, and it must return its title as string.
Keys() Returns an arraycontaining the names of all of the given object's own enumerable string properties.
Entries(obj)- returns an array of enumerable own string property names/values/key-value pairs.
Entries() Returns an array containing all of the[key, value]pairs of a given object's own enumerable string properties.
The best examples of this are Enumerable map and Enumerable select:.
Object. values() Returns an array containing thevalues that correspond to all of a given object's own enumerable string properties.
Since collect() is part of the Enumerable contract, you can safely use it to get a Collection instance.
The collect method isespecially useful when you have an instance of Enumerable and need a non-lazy collection instance.
You can use any of the Enumerable methods such as'map','select', and'take', because Enumerator includes Enumerable.
The collect method isespecially useful when you have an instance of Enumerable and need a non-lazy collection instance.
Since Enumerator includes all Enumerable methods, you can use'first' method to take the first ten rows.
A bitstring generator can be mixed with“regular” enumerable generators, and supports filters as well.
Because these classes perform Mix-in of the module'Enumerable', you can use such methods as'find','sort', and so on.
Also, when iterating over the properties of an object, every enumerable property that is on the prototype chain will be enumerated.
One difference to Map objectsis that WeakMap keys are not enumerable i.e., there is no method giving you a list of the keys.
It doesn't log array elements 3, 5,7 or hello because those are not enumerable properties, in fact they are not properties at all, they are values.