On Monday, 3 September 2018 at 07:38:51 UTC, Chris Katko wrote:
On Monday, 3 September 2018 at 06:28:38 UTC, bauss wrote:
On Monday, 3 September 2018 at 06:25:23 UTC, bauss wrote:
On Monday, 3 September 2018 at 03:19:39 UTC, Neia Neutuladh
wrote:
On Monday, 3 September 2018 at 03:04:57 UTC, Chris Katko
wrote:
This should be simple? All I want to do is load an entire
file, and access individual bytes. The entire thing. I
don't want to have know the file size before hand, or
"guess" and have a "maximum size" buffer.
So far, all google searches for "dlang binary file read"
end up not working for me.
Thank you.
http://dpldocs.info/experimental-docs/std.file.read.1.html
import std.file : read;
auto bytes = read("filename");
This gives you a void[], which you can cast to ubyte[] or
char[] or whatever you need.
Or he could do readText() which returns a string, which in
turn will give a proper char array when casted.
Actually ignore the casting thing, looking at readText it
takes a template parameter.
So:
char[] a = readText!(char[])("filename");
Thanks, that works!
But... I'm so confused by D's fifty different string types.
I can run .strip() on a char[]. But I can't run
.replace('\n','?') ?
So then I convert char[] to a temporary string and run replace
on that.
but then writefln("%s") doesn't accept strings! Only char[].
char []t = cast(char[])(c[i-15 .. i+1]).strip();
string s = text(t); //s.replace('\n','?')
writefln(" - [%s]", s); // fail
main.d(89): Error: template std.array.replace cannot deduce
function from argument types !()(char[], char, char),
candidates are:
/usr/include/dmd/phobos/std/array.d(2122):
std.array.replace(E, R1, R2)(E[] subject, R1 from, R2 to) if
(isDynamicArray!(E[]) && isForwardRange!R1 && isForwardRange!R2
&& (hasLength!R2 || isSomeString!R2))
/usr/include/dmd/phobos/std/array.d(2255):
std.array.replace(T, Range)(T[] subject, size_t from, size_t
to, Range stuff) if (isInputRange!Range &&
(is(ElementType!Range : T) || isSomeString!(T[]) &&
is(ElementType!Range : dchar)))
What's going on here?
WAIT! This is my fault (not that I was saying it was "D's" fault,
just that I was confused).
it's not replace '' ''. It's replace "" "". For some reason, I
must have been thinking it was per-character (which is what I'm
doing) so I should be using single quotes.
So I CAN run .replace("","") on a char[], just as I can a string.
And THANK GOODNESS because I thought one of the major advantages
of D was being relatively orthogonal/type agnostic and if I was
going to have to remember "X() runs only on Y" for 3+ different
string types that would be a nightmare!
