cannot implicitly convert char[] to string
I made a PR to phobos where I modified `std.format.format`. https://github.com/D-Programming-Language/phobos/pull/3528 However the auto builder fails, with the error message: runnable/test23.d(1219): Error: cannot implicitly convert expression (format(s = %s, s)) of type char[] to string The line which fails is `p = std.string.format(s = %s, s);` I don't understand why I can't convert a char[] to string.
Re: Compare types with `static if` in template function.
On Wednesday, 29 July 2015 at 17:52:45 UTC, Ali Çehreli wrote:
On 07/29/2015 10:48 AM, vladde wrote:
static if(is(typeof(c) == dchar) || is(typeof(c) ==
char))
{
slots[xy.y][xy.x].character = c;
}
else if(is(typeof(c) == fg))
I don't know whether it is the reason here but you fell for one
of the D traps. :( Most definitely, you want an 'else static
if' there.
Otherwise, for the fg case, what ends up in your code to be
compiled is this:
if(is(typeof(c) == fg))
Ali
Apparently, if I only check for a character the code compiles
without the need of static if.
if(is(typeof(c) == dchar) || is(typeof(c) == char)){
slots[xy.y][xy.x].character = c; } //Compiles and works as
expected
Re: Compare types with `static if` in template function.
On Wednesday, 29 July 2015 at 18:04:48 UTC, vladde wrote:
Apparently, if I only check for a character the code compiles
without the need of static if.
if(is(typeof(c) == dchar) || is(typeof(c) == char)){
slots[xy.y][xy.x].character = c; } //Compiles and works as
expected
And changing all if statements to static if still does not
compile.
Compare types with `static if` in template function.
I want to have a template function where I can throw in some
stuff in the parameters, then run foreach+static ifs and check
what type the current is. From my project clayers[1], I've taken
out some parts. (Note the current code does not compile.)
This is what I have so far:
struct XY {size_t x, y;}
alias fg = colorize.fg; //[2]
[...]
void changeSlot(C...)(XY xy, C changes){
foreach(c; changes){
static if(is(typeof(c) == dchar) || is(typeof(c) == char))
{
slots[xy.y][xy.x].character = c;
}
else if(is(typeof(c) == fg))
{
slots[xy.y][xy.x].fg = C;
}
}
}
[...]
changeSlot(XY(10, 15), fg.red);
For this demonstation I've chosen to only check for `char` and
`fg`, but it's intended to check for multiple different types.
(See [1])
Now when I try to compile, I get Error: more than one argument
for construction of int for checking against fg. HOWEVER, the
code functions properly when checking the type for characters.
From what I understand, my thinking works, but checking with `fg`
is causing some crux-flux. `fg` is created from a template,
please take a look at [2].
What am I doing wrong when I check for the type of `fg`?
TL;DR: Is there a way to check the type of `fg` with an static if?
[1] =
https://github.com/vladdeSV/clayers/blob/change-slot/source/clayers.d#L323
[2] =
https://github.com/yamadapc/d-colorize/blob/master/source/colorize/colors.d#L37
Re: Compare types with `static if` in template function.
On Wednesday, 29 July 2015 at 18:14:11 UTC, Ali Çehreli wrote:
else if(is(typeof(c) == fg))
{
// slots[xy.y][xy.x].fg = C;
}
The error occurs when the commented line is run. The full code
can be viewed at
https://github.com/vladdeSV/clayers/blob/change-slot/source/clayers.d
Re: Multi-dimensional fixed arrays
I am pretty surprised, as the following code gives errors.
void main(){
int [1][2] foo;
foo[0][0] = 1;
foo[0][1] = 2;
foo[1][0] = 3;
foo[1][1] = 4;
}
Those errors are:
app.d(5): Error: array index 1 is out of bounds foo[0][0 .. 1]
app.d(7): Error: array index 1 is out of bounds foo[1][0 .. 1]
Could anyone more experienced than me explain why this is, and
why not it's the other way around?
Re: Multi-dimensional fixed arrays
Oh, seems I should learn to refresh the page :)
