Proposal: Add concatMapM function (#2042)

[Henning Thielemann]

On Tue, 29 Jan 2008, Bulat Ziganshin wrote:

> Hello Henning,
>
> Tuesday, January 29, 2008, 6:35:28 PM, you wrote:
>
> >  In consider Bulat's point as preservation of unfavorable coding style
> > (namely unqualified anonymous import). This method does not scale well and
> > you can motivate stop of any development this way. So I object to Bulat's
> > argument, but not necessarily vote particularly for concatMapM, since I
> > didn't need it so far - which can also mean, that I have always
> > worked-around it without noticing it.
>
> so you will prefer to add it immediately to 6.8.*?

Why a GHC version? I thought that we speak about the 'base' package.

> i wonder how much code you write

enough each day

> and which tool you use.

NEdit. I use almost only qualified imports and named imports and have my
modules designed to be used in this way, write signatures for all
top-level variables and use -Wall.

> my tools can't automatically insert these imports and i don't have time
> to do this monkey work by hand - and anyway i consider as bad
> programming style trying to replace package manager with home-grown
> tricks.

What tricks?