Re: Array is already defined
On Friday, 5 January 2018 at 16:55:50 UTC, Steven Schveighoffer
wrote:
On 1/5/18 11:39 AM, Vino wrote:
Hi Steve,
if we add the braces we are getting the Error: undefined
identifier Datacol
void main () {
Array!int Keycol;
static foreach(i; 0 .. 3) {
{
typeof(read()[i]) Datacol;
Datacol.insertBack(sort(read[i].dup[]).uniq);
foreach(k; read[i]) {
Keycol.insertBack(Datacol[].countUntil(k));}
}
}
writeln (Datacol[], Keycol[]);
}
That's because writeln is outside the loop that defines Datacol.
Without knowing what you are trying to do, it's hard to further
help.
-Steve
Hi Steve,
Thank you very much, was able to resolve the issue after adding
the writeln within the braces, I am trying to implement a data
dictionary compressing using D, and had 2 issue and this is one
of the issue, and the other issue is detailed in the post "Error:
variable i cannot be read at compile time", which contains the
details of this program, if possible can you please help on on
the other issue in the post "Error: variable i cannot be read at
compile time".
From,
Vino.B
Re: Array is already defined
On 1/5/18 11:39 AM, Vino wrote:
Hi Steve,
if we add the braces we are getting the Error: undefined identifier
Datacol
void main () {
Array!int Keycol;
static foreach(i; 0 .. 3) {
{
typeof(read()[i]) Datacol;
Datacol.insertBack(sort(read[i].dup[]).uniq);
foreach(k; read[i]) { Keycol.insertBack(Datacol[].countUntil(k));}
}
}
writeln (Datacol[], Keycol[]);
}
That's because writeln is outside the loop that defines Datacol.
Without knowing what you are trying to do, it's hard to further help.
-Steve
Re: Array is already defined
On Friday, 5 January 2018 at 16:07:49 UTC, Steven Schveighoffer
wrote:
On 1/5/18 10:56 AM, Vino wrote:
On Friday, 5 January 2018 at 15:28:58 UTC, Jonathan M Davis
wrote:
On Friday, January 05, 2018 15:22:49 Vino via
Digitalmars-d-learn wrote:
Hi All,
Request your help on how to unset or delete an array, in
the
below example, we get an error "Common is already defined".
Auto fn1 () {
Array!string Text;
Array!string Number;
return tuple(Text, Number);
}
Void main () {
static foreach(i; 0 .. 2) {
typeof(fn1()[i]) Common;
writeln(Common[]);
Common.delete or Common.Unset // Something similar like this
}
From,
Vino.B
static foreach does not create a new scope (if it did, it
wouldn't work very well at module or class/struct scope). If
you declare any variables inside a static foreach, give it an
extra set of braces.
- Jonathan m Davis
Hi Jonathan,
Sorry , not able to get you, can you please point our as to
where we need to added the braces in the below example.
void main () {
Array!int Keycol;
static foreach(i; 0 .. 3) {
{
typeof(read()[i]) Datacol;
Datacol.insertBack(sort(read[i].dup[]).uniq);
foreach(k; read[i]) {
Keycol.insertBack(Datacol[].countUntil(k));}
}
}
writeln (Datacol[], Keycol[]);
}
-Steve
Hi Steve,
if we add the braces we are getting the Error: undefined
identifier Datacol
void main () {
Array!int Keycol;
static foreach(i; 0 .. 3) {
{
typeof(read()[i]) Datacol;
Datacol.insertBack(sort(read[i].dup[]).uniq);
foreach(k; read[i]) {
Keycol.insertBack(Datacol[].countUntil(k));}
}
}
writeln (Datacol[], Keycol[]);
}
From,
Vino.B
Re: Array is already defined
On Fri, Jan 05, 2018 at 03:56:30PM +, Vino via Digitalmars-d-learn wrote:
[...]
> Hi Jonathan,
>
> Sorry , not able to get you, can you please point our as to where we
> need to added the braces in the below example.
Try this:
void main () {
Array!int Keycol;
static foreach(i; 0 .. 3) {{
typeof(read()[i]) Datacol;
Datacol.insertBack(sort(read[i].dup[]).uniq);
foreach(k; read[i]) {
Keycol.insertBack(Datacol[].countUntil(k));
}
}}
writeln (Datacol[], Keycol[]);
}
T
--
Tech-savvy: euphemism for nerdy.
Re: Array is already defined
On 1/5/18 10:56 AM, Vino wrote:
On Friday, 5 January 2018 at 15:28:58 UTC, Jonathan M Davis wrote:
On Friday, January 05, 2018 15:22:49 Vino via Digitalmars-d-learn wrote:
Hi All,
Request your help on how to unset or delete an array, in the
below example, we get an error "Common is already defined".
Auto fn1 () {
Array!string Text;
Array!string Number;
return tuple(Text, Number);
}
Void main () {
static foreach(i; 0 .. 2) {
typeof(fn1()[i]) Common;
writeln(Common[]);
Common.delete or Common.Unset // Something similar like this
}
From,
Vino.B
static foreach does not create a new scope (if it did, it wouldn't
work very well at module or class/struct scope). If you declare any
variables inside a static foreach, give it an extra set of braces.
- Jonathan m Davis
Hi Jonathan,
Sorry , not able to get you, can you please point our as to where we
need to added the braces in the below example.
void main () {
Array!int Keycol;
static foreach(i; 0 .. 3) {
{
typeof(read()[i]) Datacol;
Datacol.insertBack(sort(read[i].dup[]).uniq);
foreach(k; read[i]) { Keycol.insertBack(Datacol[].countUntil(k));}
}
}
writeln (Datacol[], Keycol[]);
}
-Steve
Re: Array is already defined
On Friday, 5 January 2018 at 15:28:58 UTC, Jonathan M Davis wrote:
On Friday, January 05, 2018 15:22:49 Vino via
Digitalmars-d-learn wrote:
Hi All,
Request your help on how to unset or delete an array, in the
below example, we get an error "Common is already defined".
Auto fn1 () {
Array!string Text;
Array!string Number;
return tuple(Text, Number);
}
Void main () {
static foreach(i; 0 .. 2) {
typeof(fn1()[i]) Common;
writeln(Common[]);
Common.delete or Common.Unset // Something similar like this
}
From,
Vino.B
static foreach does not create a new scope (if it did, it
wouldn't work very well at module or class/struct scope). If
you declare any variables inside a static foreach, give it an
extra set of braces.
- Jonathan m Davis
Hi Jonathan,
Sorry , not able to get you, can you please point our as to
where we need to added the braces in the below example.
void main () {
Array!int Keycol;
static foreach(i; 0 .. 3) {
typeof(read()[i]) Datacol;
Datacol.insertBack(sort(read[i].dup[]).uniq);
foreach(k; read[i]) {
Keycol.insertBack(Datacol[].countUntil(k));} }
writeln (Datacol[], Keycol[]);
}
From,
Vino.B
Re: Array is already defined
On Friday, January 05, 2018 15:22:49 Vino via Digitalmars-d-learn wrote:
> Hi All,
>
> Request your help on how to unset or delete an array, in the
> below example, we get an error "Common is already defined".
>
> Auto fn1 () {
> Array!string Text;
> Array!string Number;
> return tuple(Text, Number);
> }
>
> Void main () {
> static foreach(i; 0 .. 2) {
> typeof(fn1()[i]) Common;
> writeln(Common[]);
> Common.delete or Common.Unset // Something similar like this
> }
>
> From,
> Vino.B
static foreach does not create a new scope (if it did, it wouldn't work very
well at module or class/struct scope). If you declare any variables inside a
static foreach, give it an extra set of braces.
- Jonathan m Davis
