☰
nano
time.nano
Functions
replace effect in the current context by this and abort current execution
does this effect support abort?
Redefining this to return `false` helps to detect unexptected calls to
`abort` at runtime and ensure that the static analysis finds that the
code executed with this effect will always return normally and produce
a result. This is used, e.g, in `mutate` to avoid static analysis
reporting `panic` as an effect of the use of a local mutate instance.
Redefining this to return `false` helps to detect unexptected calls to
`abort` at runtime and ensure that the static analysis finds that the
code executed with this effect will always return normally and produce
a result. This is used, e.g, in `mutate` to avoid static analysis
reporting `panic` as an effect of the use of a local mutate instance.
create a String from this instance. Unless redefined, `a.as_string` will
create `"instance[T]"` where `T` is the dynamic type of `a`
create `"instance[T]"` where `T` is the dynamic type of `a`
Get the dynamic type of this instance. For value instances `x`, this is
equal to `type_of x`, but for `x` with a `ref` type `x.dynamic_type` gives
the actual runtime type, while `type_of x` results in the static
compile-time type.
There is no dynamic type of a type instance since this would result in an
endless hierachy of types. So for Type values, dynamic_type is redefined
to just return Type.type.
equal to `type_of x`, but for `x` with a `ref` type `x.dynamic_type` gives
the actual runtime type, while `type_of x` results in the static
compile-time type.
There is no dynamic type of a type instance since this would result in an
endless hierachy of types. So for Type values, dynamic_type is redefined
to just return Type.type.
install this effect and run code that produces a result of
type T. panic in case abort is called.
type T. panic in case abort is called.
name of this type, including type parameters, e.g. 'option (list i32)'.
convenience prefix operator to create a string from a value.
This permits usage of `$` as a prefix operator in a similar way both
inside and outside of constant strings: $x and "$x" will produce the
same string.
This permits usage of `$` as a prefix operator in a similar way both
inside and outside of constant strings: $x and "$x" will produce the
same string.
abort the current execution and return from the surrounding call to
abortable with result == false.
abortable with result == false.
§(R type, f Function effect.run.R, def Function effect.run.R):Any => effect.run.R [Inherited from effect]
§(R
type
, f Function effect.run.R, def Function effect.run.R):
Any =>
effect.run.R [Inherited from effect]
execute the code of 'f' in the context of this effect
install this simple_effect and run code
In case of an `abort`, `use` returns silently (NYI: maybe this should better
return an oucome with the abort wrapped in an error?).
In case of an `abort`, `use` returns silently (NYI: maybe this should better
return an oucome with the abort wrapped in an error?).
Type Features
has an effect of the given type been installed?
has an effect of the given type been installed?
Get a type as a value.
This is a feature with the effect equivalent to Fuzion's `expr.type` call tail.
It is recommended to use `expr.type` and not `expr.type_value`.
`type_value` is here to show how this can be implemented and to illustrate the
difference to `dynamic_type`.
This is a feature with the effect equivalent to Fuzion's `expr.type` call tail.
It is recommended to use `expr.type` and not `expr.type_value`.
`type_value` is here to show how this can be implemented and to illustrate the
difference to `dynamic_type`.
time.nano is a timer that provides high precision but possibly low
accuracy. Such a timer is typically useful for timing the duration
of events, such as measuring the time it takes to perform some
calculation.
time.nano may have a signficant drift compared to actual time, it might
not be the right source of time to, e.g., feed an alarm clock that should
wake you up at 6h30 every morning.