Struct RAssertion

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struct RAssertion {
    message: String,
    condition: String,
}

Expand description

A single stopifnot() assertion: "message" = condition.

When formatted, produces a named argument for R’s stopifnot(): "'x' must be numeric" = is.numeric(x).

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§message: String

Human-readable error message shown when the assertion fails.

§condition: String

R expression that must evaluate to TRUE for the check to pass.

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impl RAssertion

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fn new(message: impl Into<String>, condition: impl Into<String>) -> Self

Create a new assertion with the given error message and R condition expression.

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fn to_stopifnot_arg(&self) -> String

Format as a stopifnot() named argument: "message" = condition.

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fn nullable(self, param: &str) -> Self

Wrap for nullable: prepend is.null(param) || to the condition, and adjust the message to mention NULL.

Auto Trait Implementations§

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impl RefUnwindSafe for RAssertion

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impl UnsafeUnpin for RAssertion

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impl UnwindSafe for RAssertion

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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