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Template std.functional.binaryFun
Transforms a string
representing an expression into a binary function. The
string
must either use symbol names a
and b
as the parameters or
provide the symbols via the parm1Name
and parm2Name
arguments.
template binaryFun(alias fun, string parm1Name = "a", string parm2Name = "b")
;
Contained Functions
Name | Description |
---|---|
binaryFun |
Parameters
Name | Description |
---|---|
fun | a string or a callable |
parm1Name | the name of the first parameter if fun is a string.
Defaults to "a" . |
parm2Name | the name of the second parameter if fun is a string.
Defaults to "b" . |
Returns
If fun
is not a string, binaryFun
aliases itself away to
fun
.
Example
alias less = binaryFun!("a < b");
assert(less(1, 2) && !less(2, 1));
alias greater = binaryFun!("a > b");
assert(!greater("1", "2") && greater("2", "1"));
Authors
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.