├── Font.swift
└── README.md


/Font.swift:
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 1 | //
 2 | //  Font.swift
 3 | //  SaferFonts
 4 | //
 5 | //  Created by Renato Rodrigues on 24/08/2015.
 6 | //  Copyright © 2015 SaferFonts. All rights reserved.
 7 | //
 8 | 
 9 | protocol Font {
10 |     func name() -> String
11 | }
12 | 
13 | extension UIFont {
14 |     convenience init(font: Font, size: CGFloat) {
15 |         self.init(name: font.name(), size: size)!
16 |     }
17 | }
18 | 


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/README.md:
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 1 | # Why "Safer"?
 2 | 
 3 | Let's imagine we want to set a `UILabel`'s font:
 4 | 
 5 | ```swift
 6 | myLabel.font = UIFont(name: "ArialMT", size: 14)!
 7 | ```
 8 | 
 9 | This approach is error prone and inherently invites for duplication.
10 | 
11 | 1. We could easily misspell `"ArialMT"` and  crash the app. Since `UIFont`'s `name:size:` returns an optional, for practical reasons we would just force unwrap it. (in this particular case it doesn't make sense to use optional binding)
12 | 2. If we need to use the same font in some other place, we might be tempted to just copy/paste it.
13 | 
14 | SaferFonts, in this case, just bundles the font in a convenient `enum`:
15 | 
16 | ```swift
17 | myLabel.font = UIFont(name: ArialMT.Default.rawValue, size: 14)!
18 | ```
19 | 
20 | As you might have noticed by now, SaferFont is not a 3rd party library that you can just get using Carthage or Cocopods. It would be a significant burden to use a library with dozens of fonts, when you just need one or two. So instead, this can be viewed as an approach and a database of fonts that you can use. 
21 | 
22 | ### The Font Protocol
23 | 
24 | The [Font protocol](https://github.com/RuiAAPeres/SaferFonts/blob/master/Font.swift) (suggested by [renatorodrigues](https://github.com/renatorodrigues)), can also be used to make this enum easier to consume. For example with the font `FooBar` :
25 | 
26 | ```swift
27 | let fooBarFont = UIFont(font: FooBar.Bold, size: 15)
28 | ```
29 | 
30 | In order to make the enum compliant:
31 | 
32 | ```swift
33 | private enum FooBar: String, Font {
34 |     case Bold = "FooBar-Bold"
35 | 
36 |     func name() -> String {
37 |         return self.rawValue
38 |     }
39 | }
40 | ```
41 | 
42 | ### ArialMT
43 | 
44 | ```swift
45 | enum ArialMT: String {
46 |     case Regular = "ArialMT"
47 |     case Bold = "Arial-BoldMT"
48 |     case Italic = "Arial-ItalicMT"
49 |     case BoldItalic = "Arial-BoldItalicMT"
50 | }
51 | ```
52 | ### HelveticaNeue
53 | 
54 | ```swift
55 | enum HelveticaNeue: String {
56 |     case Regular = "HelveticaNeue"
57 |     case Italic = "HelveticaNeue-Italic"
58 |     case Bold = "HelveticaNeue-Bold"
59 |     case BoldItalic = "HelveticaNeue-BoldItalic"
60 |     case Medium = "HelveticaNeue-Medium"
61 |     case MediumItalic = "HelveticaNeue-MediumItalic"
62 |     case Light = "HelveticaNeue-Light"
63 |     case LightItalic = "HelveticaNeue-LightItalic"
64 |     case UltraLight = "HelveticaNeue-UltraLight"
65 |     case UltraLightItalic = "HelveticaNeue-UltraLightItalic"
66 |     case Thin = "HelveticaNeue-Thin"
67 |     case ThinItalic = "HelveticaNeue-ThinItalic"
68 |     case CondensedBlack = "HelveticaNeue-CondensedBlack"
69 |     case CondensedBold = "HelveticaNeue-CondensedBold"
70 | }
71 | ```
72 | 


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