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fixes/clarfication for hashes #11

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14 changes: 12 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -438,7 +438,11 @@ you're actually saying that the key to "bar" is a *variable* called foo, not the
Adding elements to a Map is easy:

```scala
val newHash = myHash + (anotherkey -> "another value")
var myHash = Map(key -> val)
myHash += (anotherKey -> anotherValue)

```scala
val newHash = myHash + (anotherKey -> "another value")
```

You can also easily join two Maps:
Expand All @@ -452,7 +456,13 @@ in this case, just like when you do it in Perl, any duplicate keys will point to
Deleting keys is also pretty simple:

```scala
myHash - "someKey"
myHash -= "someKey"
```

but when you would like to get a new hash without this element, use this:

```scala
val newHash = myHash - "someKey"
```

There's also a cool thing: we often want to fetch values from Maps or set a default. In Perl, you could
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