On 7/5/19 9:56 PM, ag0aep6g via Digitalmars-d-learn wrote:
On 05.07.19 20:49, Samir wrote:
As a follow-on to my earlier question, is there a way to pass a
variable to the `map` function that specifies the column, rather than
hard-coding it? I'm thinking of something like:
p.map!("a[column]").maxElement.writeln;
You can't do that with the string style, because the string is turned
into a function inside of `map`. Your `column` isn't visible there.
It works when you pass an actual callable instead, e.g. a lambda:
p.map!(a => a[column]).maxElement.writeln;
Furthermore, Samir, the parameter `a` can be renamed to whatever you
prefer or what fits the code at hand best, e.g. `(row => row[column])`,
as opposed to the string version, where only a small set of mostly
single character names is supported.
