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improve_pr
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2fbf82f8ab |
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@ -903,6 +903,13 @@ fn assert! {
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else panic! string ("Assert failed: ", msg, " with ", value)
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}
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fn assert {
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"Asserts a condition. Returns a result tuple: `(:ok, value)` if the value is truthy, and `(:err, value)` if it is falsy. Or, give it an error message, and that's what'll be in the error tuple instead."
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(value) -> if value then (:ok, value) else (:err, value)
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(msg, value) -> if value then (:ok, value) else (:err, msg)
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}
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&&& Turtle & other graphics
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& some basic colors
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@ -1282,6 +1289,7 @@ ns prelude {
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unwrap!
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unwrap_or
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assert!
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assert
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colors
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forward!, fd!
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back!, bk!
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