Removing whitespace duplicates

["Nordlöw" via Digitalmars-d-learn]

How can I extend

string line = "car wash";

line.strip.splitter!isWhite.joiner("_").to!string

so that

car wash

becomes

car_wash

and not

car___wash

?

Used at https://github.com/nordlow/justd/blob/master/knet.d#L1142

["Nordlöw" via Digitalmars-d-learn]

Post by "Nordlöw" via Digitalmars-d-learn
line.strip.splitter!isWhite.joiner("_").to!string

Doh, that was too easy:

line.strip.splitter!isWhite.filter!(a =>
!a.empty).joiner(lineSeparator).to!S;

Sorry, for being lazy ;)

[bearophile via Digitalmars-d-learn]

Post by "Nordlöw" via Digitalmars-d-learn
How can I extend
string line = "car wash";
line.strip.splitter!isWhite.joiner("_").to!string
so that
car wash
becomes
car_wash
and not
car___wash
?

Use std.string.tr.

Bye,
bearophile

[Justin Whear via Digitalmars-d-learn]

Post by bearophile via Digitalmars-d-learn
Use std.string.tr.
Bye,
bearophile

std.string.squeeze might be more appropriate.

[bearophile via Digitalmars-d-learn]

Post by Justin Whear via Digitalmars-d-learn
std.string.squeeze might be more appropriate.

But with tr you can also replace the spaces with the underscore.

Bye,
bearophile

["Nordlöw" via Digitalmars-d-learn]

Post by bearophile via Digitalmars-d-learn
But with tr you can also replace the spaces with the underscore.

std.string.tr is my preferred choice here :)

Thanks!

["Nordlöw" via Digitalmars-d-learn]

Post by "Nordlöw" via Digitalmars-d-learn
std.string.tr is my preferred choice here :)

It would be nice to have a lambda-variant of std.string.tr to
call like

x.tr!isWhite(['_'])

[bearophile via Digitalmars-d-learn]

Post by "Nordlöw" via Digitalmars-d-learn
It would be nice to have a lambda-variant of std.string.tr to
call like
x.tr!isWhite(['_'])

If your text is ASCII, then there is std.ascii.whitespace that
can be given as argument to std.string.tr.

Bye,
bearophile

["Nordlöw" via Digitalmars-d-learn]

Post by bearophile via Digitalmars-d-learn
If your text is ASCII, then there is std.ascii.whitespace that
can be given as argument to std.string.tr.
Bye,
bearophile

http://dlang.org/phobos/std_ascii.html#.whitespace

is of string but

std.string.tr needs [string] as argument.

How does that work?

[via Digitalmars-d-learn]

Post by "Nordlöw" via Digitalmars-d-learn

Post by bearophile via Digitalmars-d-learn
If your text is ASCII, then there is std.ascii.whitespace that
can be given as argument to std.string.tr.
Bye,
bearophile

http://dlang.org/phobos/std_ascii.html#.whitespace
is of string but
std.string.tr needs [string] as argument.
How does that work?

string a = "test \t \t test";

writeln(a.tr(std.ascii.whitespace,"_","s"));