1
00:00:00,440 --> 00:00:05,800
Similarly, to hash keys, Ruby provides
us methods for working with hash values.

2
00:00:07,150 --> 00:00:09,930
Let's take a look of some of
those now using WorkSpaces.

3
00:00:10,960 --> 00:00:14,220
Okay, so I've just created
a new ruby WorkSpace here and

4
00:00:14,220 --> 00:00:15,910
here we are in the console.

5
00:00:15,910 --> 00:00:20,039
Let's go ahead and launch an irb session
and start working with hash values.

6
00:00:21,810 --> 00:00:24,080
So let's create a hash to work with.

7
00:00:24,080 --> 00:00:29,475
The item here is gonna be "Bread",
quantity of 1 and

8
00:00:29,475 --> 00:00:35,260
the brand is still gonna
be "Treehouse Bread Company".

9
00:00:37,340 --> 00:00:39,280
All right, so here is a hash to work with.

10
00:00:40,280 --> 00:00:46,260
Now just like the method for looking at
all the keys was called hash dot keys,

11
00:00:46,260 --> 00:00:50,380
we have a similar method to look
at all the values called values.

12
00:00:51,510 --> 00:00:56,260
And that will return an array of all of
the different values inside of the hash.

13
00:00:57,500 --> 00:01:03,650
And again how we asked the hash if it
had a key, and passed in an argument,

14
00:01:03,650 --> 00:01:06,680
we can do the same thing
to see if it has a value.

15
00:01:06,680 --> 00:01:09,721
So we could say hash.has_value, and

16
00:01:09,721 --> 00:01:15,710
then pass in a value it does not have
the value "brand" because that's a key, but

17
00:01:15,710 --> 00:01:21,813
let's see if it has a value for the number
one which is the quantity and it does.

18
00:01:25,046 --> 00:01:30,100
And we can also use the method value and
pass in an argument.

19
00:01:30,100 --> 00:01:34,520
It's pretty much the exact same thing,
an alias under a different name.

20
00:01:36,110 --> 00:01:39,700
If we wanted to get a couple
values back from the hash,

21
00:01:39,700 --> 00:01:45,370
we could use the values_at method and
pass in the keys that we want.

22
00:01:45,370 --> 00:01:48,850
We'll say we want "item" and "quantity", and

23
00:01:48,850 --> 00:01:53,450
that will return an array of the values
for the keys that we passed in.

24
00:01:54,730 --> 00:01:59,760
Try practicing with hashes and hash
values on your own now using WorkSpaces.