[Newbies] Re: translateFrom:to:table:

[David Shaffer]

Thomas Keller wrote:

> That works for lots of methods. But for some methods there are no
> decent comments or examples. This is what I get from "Senders of
> translateFrom:to:table:"
>  translateWith: table
>     "translate the characters in the string by the given table, in place"
>     ^ self translateFrom: 1 to: self size table: table


Keep going...senders of #translateWith: and so on until you find a
meaningful method.  With Kom loaded in my image I find:

ModDoc>>relativeFilePathFrom: path
    ^((path notEmpty and: [path first = $/])
        ifTrue: [path copyFrom: 2 to: path size]
        ifFalse: ['']) translateWith: DelimiterTranslation

and if I inspect DelimiterTranslation I find:

a ByteArray(0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94
95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131
132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149
150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167
168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185
186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203
204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221
222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255)

I see that it is a class variable of ModDoc so I look at the /class
side/ initialize method to see where it gets assigned and find:

initialize
    "self initialize"

    DelimiterTranslation _ (0 to: 255) as: ByteArray.
    DelimiterTranslation
        at: ($/ asciiValue + 1)
        put: FileDirectory pathNameDelimiter asciiValue.

    "Register this class for startUp notification (in case we are
started on a
    platform with a differen path name delimiter"
    Smalltalk addToStartUpList: self.


>
> I don't find see anything called "references".
> I cannot find a single example of what a table arguments should look
> like.

It is available for classes so in the class pane of your browser bring
up the right-click menu and you should see it (alt-N is shortcut which
also works in text panes if you have a class name selected).

Hope that helps....

David