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assign default values for object's members
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| import macros | |
| template value(x: untyped) {.pragma.} | |
| proc init[T](t: typedesc[T]): T = | |
| for k, v in result.fieldPairs: | |
| if v.hasCustomPragma(value): | |
| v = v.getCustomPragmaVal(value) | |
| type | |
| MyObj = object | |
| number {.value: 15}: int | |
| hello {.value: "world".}: string | |
| var o = init MyObj | |
| assert o.number == 15 | |
| assert o.hello == "world" |
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