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Updated SC2082 (markdown)

koalaman
2015-05-13 11:51:21 -07:00
parent b17abf4415
commit c90dd3c948
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SC2082.md

@@ -15,9 +15,9 @@
### Rationale: ### Rationale:
You can expand a variable `var_1` with `${var_1}`, but you can not generate the string `var_1` with an embedded expansion, like `var_$n`. Instead, you have to use an indirect reference. You can expand a variable `var_1` with `${var_1}`, but you can not generate the string `var_1` with an embedded expansion, like `${var_$n}`. Instead, you have to use an indirect reference.
You can do this by creating a variable containing the variable name you want, e.g. `myvar="var_$n"` and then expanding it indirectly with `${!myvar}`. This will give the contents of the variable `var_1`. You do this by creating a variable containing the variable name you want, e.g. `myvar="var_$n"` and then expanding it indirectly with `${!myvar}`. This will give the contents of the variable `var_1`.
### Exceptions: ### Exceptions: