Since Immutable.js never directly mutates given data, it always needs to make another copy of it, performing multiple iterations like this can be very expensive. Seq is lazy immutable sequence of data, meaning it will perform as few operations as possible to do its task while skipping creation...
A map is like a JavaScript object. It's a keyed collection, meaning that the same types of keys that you would use with JavaScript objects also work with maps. Immutable.js maps are also like native JavaScript Map instances in that they can use anything as a key—not just strings:...
In the English language, the term "mutable" refers to the ability to change or be modified, while "immutable" denotes the opposite, meaning something that cannot be changed. When we talk about an "immutable object," we are referring to an object whose state or properties remain fixed and u...
Note the section "Callback Types > Optional Parameters in Callbacks" of this dos and don'ts document from the TypeScript docs Don’t use optional parameters in callbacks unless you really mean it: This has a very specific meaning: the done callback might be invoked with 1 argument or might...
In practice it's used to allow for a single instance of an entity to be stored in one place, with any other uses of it referring back to the original. It's implemented as a State type using State.create, meaning that a reference is just another Immutable.Map of a specific shape. A...
In a blockchain, data written to a block are immutable, meaning it cannot be changed. Through cryptographic hash functions and consensus algorithms, each block has a unique hash value, and only the majority of participating nodes agree to write it into the chain. Any change in the block will...
2. Using Reverse Indexes of Tuples in Python Much similar to regular indexing, here, we use the index inside the square brackets to access the elements, with only one difference, that is, we use the index in a reverse manner. Meaning, that the indexing of the elements would start from ...
The name "sp2" is derived from the name of orbital of chemical bond used in phenyl group. This was once a core function of Phenyl framework and extracted from the library. Another meaning of "sp2" is State-operating Procedures with Portability. Portability means that procedures are expressed ...
JavaScript uses a reference assignment, meaning that the new object simply refers to the original object, changing the new will also affect the old: foo={a:1};bar=foo;bar.a=2;foo.a// 2 Although this can save memory, when the application is complex, it can result in the state not be...
Constraints and/or definitions, such as the way in which data and transactions written to the cryptographically secured ledger are represented in the database table, how they interact relative to other objects in the cryptographically secured ledger, and/or the semantic meaning of any given row, ...