Re: D2 map trouble
On Wed, Jul 28, 2010 at 01:06, Nick Sabalausky a...@a.a wrote:
Nick Sabalausky a...@a.a wrote in message
news:i2no7g$eu...@digitalmars.com...
Trying to convert some D1 code to D2:
On 2.047, I'm trying to do this:
import std.string;
void foo(string str)
{
str =
std.algorithm.map!(
(char a) { return inPattern(a, [digits, letters])? a : '_'; }
)(str);
}
And I'm getting:
delegate std.algorithm.__dgliteral1 cannot access frame of function
__dgliteral1
What's going on? How do I do it right? I figure I probably have some sort
of problem with strings being immutable(char)[] instead of char[], but it
doesn't look like that's the issue it's complaining about. Also, in this
particular case, I'm not concerned about multi-unit UTF-8 characters.
In my particular case, I've just switched to regex:
import std.regex;
str = replace(str, regex([^a-zA-Z0-9]), _);
But I am still curious to hear what exactly was going on with map.
It's an error I get on a weekly basis :-(
Either returning a map with an anonymous function or using it as you do. I
gather the Map template in std.algo is unable to have access to your closure
literal, as it is inside foo.
A possible workaround is having the anonymous function as a standard, named,
free function and use this inside foo. But in that case, why have anonymous
functions in D?
Another is to use 'string functions', I think. I can test right now, but
something like might work:
void foo(string str)
{
str =
std.algorithm.map!q{
inPattern(a, [digits, letters])? a : '_';
}
(str);
}
But then I guess inPattern must be visible from std.algorithm.
So my current conclusion it that it's more a limitation of anonymous
closures than a limitation in map.
Philippe
Re: D2 map trouble
On 07/28/2010 12:57 AM, Nick Sabalausky wrote:
Trying to convert some D1 code to D2:
On 2.047, I'm trying to do this:
import std.string;
void foo(string str)
{
str =
std.algorithm.map!(
(char a) { return inPattern(a, [digits, letters])? a : '_'; }
)(str);
}
And I'm getting:
delegate std.algorithm.__dgliteral1 cannot access frame of function
__dgliteral1
What's going on? How do I do it right? I figure I probably have some sort of
problem with strings being immutable(char)[] instead of char[], but it
doesn't look like that's the issue it's complaining about. Also, in this
particular case, I'm not concerned about multi-unit UTF-8 characters.
This is a compiler bug. Easy workaround:
auto fn = (char a) { ... };
str = map!fn(str);
Re: D2 map trouble
On Wed, Jul 28, 2010 at 16:51, Pelle pelle.mans...@gmail.com wrote:
This is a compiler bug. Easy workaround:
auto fn = (char a) { ... };
str = map!fn(str);
Is it on bugzilla?
Philippe
Re: D2 map trouble
Philippe Sigaud: Is it on bugzilla? If not present you can add it here: http://d.puremagic.com/issues/show_bug.cgi?id=4264 Bye, bearophile
D2 map trouble
Trying to convert some D1 code to D2:
On 2.047, I'm trying to do this:
import std.string;
void foo(string str)
{
str =
std.algorithm.map!(
(char a) { return inPattern(a, [digits, letters])? a : '_'; }
)(str);
}
And I'm getting:
delegate std.algorithm.__dgliteral1 cannot access frame of function
__dgliteral1
What's going on? How do I do it right? I figure I probably have some sort of
problem with strings being immutable(char)[] instead of char[], but it
doesn't look like that's the issue it's complaining about. Also, in this
particular case, I'm not concerned about multi-unit UTF-8 characters.
Re: D2 map trouble
Nick Sabalausky a...@a.a wrote in message
news:i2no7g$eu...@digitalmars.com...
Trying to convert some D1 code to D2:
On 2.047, I'm trying to do this:
import std.string;
void foo(string str)
{
str =
std.algorithm.map!(
(char a) { return inPattern(a, [digits, letters])? a : '_'; }
)(str);
}
And I'm getting:
delegate std.algorithm.__dgliteral1 cannot access frame of function
__dgliteral1
What's going on? How do I do it right? I figure I probably have some sort
of problem with strings being immutable(char)[] instead of char[], but it
doesn't look like that's the issue it's complaining about. Also, in this
particular case, I'm not concerned about multi-unit UTF-8 characters.
In my particular case, I've just switched to regex:
import std.regex;
str = replace(str, regex([^a-zA-Z0-9]), _);
But I am still curious to hear what exactly was going on with map.
Re: D2 map trouble
On 28.07.2010 3:06, Nick Sabalausky wrote:
Nick Sabalauskya...@a.a wrote in message
news:i2no7g$eu...@digitalmars.com...
Trying to convert some D1 code to D2:
On 2.047, I'm trying to do this:
import std.string;
void foo(string str)
{
str =
std.algorithm.map!(
(char a) { return inPattern(a, [digits, letters])? a : '_'; }
)(str);
}
And I'm getting:
delegate std.algorithm.__dgliteral1 cannot access frame of function
__dgliteral1
What's going on? How do I do it right? I figure I probably have some sort
of problem with strings being immutable(char)[] instead of char[], but it
doesn't look like that's the issue it's complaining about. Also, in this
particular case, I'm not concerned about multi-unit UTF-8 characters.
In my particular case, I've just switched to regex:
import std.regex;
str = replace(str, regex([^a-zA-Z0-9]), _);
But I am still curious to hear what exactly was going on with map.
AFAIK weird compiler bug. See also thread about std.find which involves
the problem with map
http://www.digitalmars.com/d/archives/digitalmars/D/Improving_std.algorithm.find_113545.html#N113558
--
Dmitry Olshansky
