# Cookbook/Lists and strings

Since strings are lists of characters, you can use any available list function.

# Combining strings

Problem Solution Examples
combining two strings (++)
```"foo" ++ "bar"                  --> "foobar"
```
combining many strings concat
```concat ["foo", "bar", "baz"]    --> "foobarbaz"
```

# Accessing substrings

Problem Solution Examples
```head "foo bar baz"      --> 'f'
```
accessing the last character last
```last "foo bar baz"      --> 'z'
```
accessing the character at a given index (!!)
```"foo bar baz" !! 4      --> 'b'
```
accessing the first `n` characters take
```take 3 "foo bar baz"    --> "foo"
```
accessing the last `n` characters TODO TODO
accessing the `n` characters starting from index `m` drop, take
```take 4 \$ drop 2 "foo bar baz"    --> "o ba"
```

# Splitting strings

Problem Solution Examples
splitting a string into a list of words words
```words "foo bar\t baz\n"        --> ["foo","bar","baz"]
```
splitting a string into two parts splitAt
```splitAt 3 "foo bar baz"    --> ("foo"," bar baz")
```

# Multiline strings

```"foo\
\bar"               --> "foobar"
```

# Converting between characters and values

Problem Solution Examples
converting a character to a numeric value ord
```import Char
ord 'A'    --> 65
```
converting a numeric value to a character chr
```import Char
chr 99     --> 'c'
```

# Reversing a string by words or characters

Problem Solution Examples
reversing a string by characters reverse
```reverse "foo bar baz"                        --> "zab rab oof"
```
reversing a string by words words, reverse, unwords
```unwords \$ reverse \$ words "foo bar baz"      --> "baz bar foo"
```
reversing a string by characters by words words, reverse, map, unwords
```unwords \$ map reverse \$ words "foo bar baz"  --> "oof rab zab"
```

# Converting case

Problem Solution Examples
converting a character to upper-case toUpper
```import Char
toUpper 'a'            --> "A"
```
converting a string to upper-case toUpper, map
```import Char
map toUpper "Foo Bar"  --> "FOO BAR"
```
converting a character to lower-case toLower
```import Char
toLower 'A'            --> "a"
```
converting a string to lower-case toLower, map
```import Char
map toLower "Foo Bar"  --> "foo bar"
```

TODO

# Performance

For high performance requirements (where you would typically consider C), consider using Data.ByteString.

TODO