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Template `std.functional.unaryFun`

Transforms a string representing an expression into a unary function. The string must either use symbol name a as the parameter or provide the symbol via the parmName argument.


						
				template unaryFun(alias fun, string parmName = "a")
				;

Contained Functions

Name	Description
unaryFun

Parameters

Name	Description
fun	a `string` or a callable
parmName	the name of the parameter if `fun` is a string. Defaults to `"a"`.

Returns

If fun is a string, a new single parameter function

If fun is not a string, an alias to fun.

Example

// Strings are compiled into functions:
alias isEven = unaryFun!("(a & 1) == 0");
assert(isEven(2) && !isEven(1));

Authors

Andrei Alexandrescu

License

Boost License 1.0.