On Wednesday, 16 July 2014 at 23:24:24 UTC, Joseph Rushton
Wakeling via Digitalmars-d-learn wrote:
Are you interested in having each character in the sequence
randomly chosen independently of all the others, or do you want
a random subset of all available characters (i.e. no character
appears
Alternative:
randomSample(lowercase, 10, lowercase.length).writeln;
No, I don't think that's appropriate, because it will pick 10 individual
characters from a, b, c, ... , z (i.e. no character will appear more than once),
and the characters picked will appear in alphabetical order.
Nordlöw:
Could someone elaborate shortly which cases this means?
All cases where you really can't live without it :-) It's like a
cast(.
Bye,
bearophile
On Tuesday, 15 July 2014 at 00:03:04 UTC, bearophile wrote:
to avoid using @trusted in most cases.
Could someone elaborate shortly which cases this means?
On Tuesday, 15 July 2014 at 18:50:06 UTC, bearophile wrote:
All cases where you really can't live without it :-) It's like
Hmm. I guess I'm gonna have to remove some @trusted tagging then
;)
Nordlöw:
Is there a natural way of generating/filling a
string/wstring/dstring of a specific length with random
contents?
Do you mean something like this?
import std.stdio, std.random, std.ascii, std.range, std.conv;
string genRandomString(in size_t len) {
return len
.iota
On Monday, 14 July 2014 at 22:21:36 UTC, bearophile wrote:
Nordlöw:
Is there a natural way of generating/filling a
string/wstring/dstring of a specific length with random
contents?
Do you mean something like this?
import std.stdio, std.random, std.ascii, std.range, std.conv;
string
On Monday, 14 July 2014 at 22:27:57 UTC, Brad Anderson wrote:
Alternative:
randomSample(lowercase, 10, lowercase.length).writeln;
std.ascii should really be using std.encoding.AsciiString. Then
that length wouldn't be necessary.
Brad Anderson:
Alternative:
randomSample(lowercase, 10, lowercase.length).writeln;
From randomSample docs:
Selects a random subsample out of r, containing exactly n
elements. The order of elements is the same as in the original
range.
Bye,
bearophile
On Monday, 14 July 2014 at 22:21:36 UTC, bearophile wrote:
Nordlöw:
Is there a natural way of generating/filling a
string/wstring/dstring of a specific length with random
contents?
Do you mean something like this?
import std.stdio, std.random, std.ascii, std.range, std.conv;
string
Nordlöw:
I was specifically interested in something that exercises
(random samples) potentially _all_ code points for string,
wstring and dstring (all code units that is).
That's harder. Generating all uints and then testing if it's a
Unicode dchar seems possible.
Bye,
bearophile
On Monday, 14 July 2014 at 22:35:59 UTC, Nordlöw wrote:
On Monday, 14 July 2014 at 22:32:51 UTC, Nordlöw wrote:
I believe defining a complete random sampling of all code units
in dchar is a good start right? This can then be reused to
lazily convert while filling in a string and wstring.
On Monday, 14 July 2014 at 22:32:51 UTC, Nordlöw wrote:
I believe defining a complete random sampling of all code units
in dchar is a good start right? This can then be reused to lazily
convert while filling in a string and wstring.
Nordlöw:
I believe defining a complete random sampling of all code units
in dchar is a good start right? This can then be reused to
lazily convert while filling in a string and wstring.
Several combinations of unicode chars are not meaningful/valid
(like pairs of ligatures). Any thing that
On Monday, 14 July 2014 at 22:39:08 UTC, Nordlöw wrote:
might be were to start.
Is it really this simple?
bool isValidCodePoint(dchar c)
{
return c 0xD800 || (c = 0xE000 c 0x11);
}
On Monday, 14 July 2014 at 22:39:15 UTC, bearophile wrote:
Several combinations of unicode chars are not meaningful/valid
(like pairs of ligatures). Any thing that has to work correctly
with Unicode is complex.
So I guess we need something more than just isValidCodePoint
right?
On Monday, 14 July 2014 at 22:32:25 UTC, bearophile wrote:
Brad Anderson:
Alternative:
randomSample(lowercase, 10, lowercase.length).writeln;
From randomSample docs:
Selects a random subsample out of r, containing exactly n
elements. The order of elements is the same as in the original
On Monday, 14 July 2014 at 22:45:29 UTC, Nordlöw wrote:
So I guess we need something more than just isValidCodePoint
right?
Here's a first try:
https://github.com/nordlow/justd/blob/master/random_ex.d#L53
Nordlöw:
https://github.com/nordlow/justd/blob/master/random_ex.d#L53
Isn't @trusted mostly for small parts of Phobos code? I suggest
to avoid using @trusted in most cases.
Bye,
bearophile
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