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import std/with
import std/[assertions, formatfloat]
type
Foo = object
col, pos: string
name: string
proc setColor(f: var Foo; r, g, b: int) = f.col = $(r, g, b)
proc setPosition(f: var Foo; x, y: float) = f.pos = $(x, y)
var f: Foo
with(f, setColor(2, 3, 4), setPosition(0.0, 1.0))
doAssert f.col == "(2, 3, 4)"
doAssert f.pos == "(0.0, 1.0)"
f = Foo()
with f:
col = $(2, 3, 4)
pos = $(0.0, 1.0)
_.name = "bar"
doAssert f.col == "(2, 3, 4)"
doAssert f.pos == "(0.0, 1.0)"
doAssert f.name == "bar"
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