9d57a53 · urbit.org · git.iko.soy

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add /, docs; minor fix to earlier docs

9d57a53Ted Blackman9 years ago

docs/arvo/internals/ford/runes.md+20−1

@@ -129,6 +129,8 @@ Example:

129goo

130```

131

132+produces: `2`

133+

132Here's a slightly more complex example with runes that use the filesystem:

134Here's a slightly more complex example with runes that use the filesystem:

133```

135```

134/= file-length

136/= file-length

@@ -139,4 +141,21 @@ file-length

139```

141```

140produces the number of bytes in the file "/path/to/hoon/file."

142produces the number of bytes in the file "/path/to/hoon/file."

141

143

144+### `/,` switch by path

145+

146+`/,` is a switch statement, which picks a branch to evaluate based on

147+whether the current path matches the path in the switch statement.

148+

149+Example:

150+```

151+/= just-right

152+ /: /right-path :: set path to /right-path

153+ /,

154+ /wrong-path /~ ~

155+ /another-wrong-path /~ ~

156+ /right-path /~ %evaluate-me :: only evaluate this horn

157+ ==

158+`@t`just-right

159+```

160+

142−produces: `2`

161+produces: `'evaluate-me'`