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I'm reading through AngularJS developer guidelines, and although I'm not so new to JavaScript, and although Google talks down to developers I don't understand some portions of the documentation.
Namely, I don't understand what hash object is. I thought I knew what object hash was, but they use it differently. I'll put few quotes to illustrate:
About scope parameter of $compile function
If set to {} (object hash), then a new "isolate" scope is created
The 'isolate' scope takes an object hash which defines a set of local scope properties derived from the parent scope. These local properties are useful for aliasing values for templates. Locals definition is a hash of local scope property to its source:
Talking about link function for creationg of directives
attrs is a hash object with key-value pairs of normalized attribute names and their corresponding attribute values
object hash and hash object same thing? If so, they should probably revise their documentation.Comment to answers:
As I asked several questions, each answerer seems to have answered best to a single part. For future reference, each of them is valuable and worth the read.
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A hash object is dynamically created in memory at run-time. The size of a hash object grows as items are added and it contracts as items are removed. A hash object consists of key columns, data columns, and methods such as DECLARE, FIND, etc. A hash object's scope is limited to the DATA step in which it is created.
A JavaScript Object is an example of a Hash Table because data is represented a key/value pairs. A hashing function can be used to map the key to an index by taking an input of any size and returning a hash code identifier of a fixed size.
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