On Saturday, 7 November 2015 at 17:13:33 UTC, Namal wrote:
On Saturday, 5 September 2015 at 14:49:13 UTC, deed wrote:
On Saturday, 5 September 2015 at 14:44:19 UTC, deed wrote:
.map!(s => chomp(s, "\"")
.map!(s => chompPrefix(s, "\"")
should be
.map!(s => chomp(s, "\""))
.map!(s =>
On Saturday, 5 September 2015 at 14:49:13 UTC, deed wrote:
On Saturday, 5 September 2015 at 14:44:19 UTC, deed wrote:
.map!(s => chomp(s, "\"")
.map!(s => chompPrefix(s, "\"")
should be
.map!(s => chomp(s, "\""))
.map!(s => chompPrefix(s, "\""))
Hello again,
Now I have a file that
On Friday, 18 September 2015 at 10:48:25 UTC, Namal wrote:
On Friday, 18 September 2015 at 10:34:41 UTC, Edwin van Leeuwen
wrote:
On Friday, 18 September 2015 at 10:26:46 UTC, Namal wrote:
Hello guys, is there a nice functional way to read the file
which is like
1,2,3,4,5,6
2,3,4,5,6,7
Hello guys, is there a nice functional way to read the file which
is like
1,2,3,4,5,6
2,3,4,5,6,7
8,9,0,9,2,3
line by line, split numbers and remove each ','
convert it to int and save in a matrix int[][] arr?
On Friday, 18 September 2015 at 10:34:41 UTC, Edwin van Leeuwen
wrote:
On Friday, 18 September 2015 at 10:26:46 UTC, Namal wrote:
Hello guys, is there a nice functional way to read the file
which is like
1,2,3,4,5,6
2,3,4,5,6,7
8,9,0,9,2,3
line by line, split numbers and remove each ','
On Friday, 18 September 2015 at 11:37:15 UTC, Edwin van Leeuwen
wrote:
On Friday, 18 September 2015 at 11:11:51 UTC, Namal wrote:
compiles but crashes
For me it works fine. You probably have extra spaces or
something in your file. It would help if you posted the error
message you get when
On Friday, 18 September 2015 at 10:26:46 UTC, Namal wrote:
Hello guys, is there a nice functional way to read the file
which is like
1,2,3,4,5,6
2,3,4,5,6,7
8,9,0,9,2,3
line by line, split numbers and remove each ','
convert it to int and save in a matrix int[][] arr?
Not tested, but I
On Friday, 18 September 2015 at 11:06:46 UTC, Edwin van Leeuwen
wrote:
On Friday, 18 September 2015 at 10:48:25 UTC, Namal wrote:
On Friday, 18 September 2015 at 10:34:41 UTC, Edwin van
Leeuwen wrote:
On Friday, 18 September 2015 at 10:26:46 UTC, Namal wrote:
Hello guys, is there a nice
So do I understand it right: does => in map! indicates a lambda
function?
On Friday, 18 September 2015 at 12:28:29 UTC, Namal wrote:
So do I understand it right: does => in map! indicates a
lambda function?
Yes exactly. There are a number of ways you can define a lambda
function in D. For example if the function is multiline I often
use:
(l) {
...; // do
On 09/18/2015 05:58 AM, Edwin van Leeuwen wrote:
On Friday, 18 September 2015 at 12:28:29 UTC, Namal wrote:
So do I understand it right: does => in map! indicates a lambda
function?
Yes exactly. There are a number of ways you can define a lambda function
in D. For example if the function is
On Monday, 14 September 2015 at 18:36:54 UTC, Meta wrote:
As an aside, you should use `sort()` instead of the
parentheses-less `sort`. The reason for this is that doing
`arr.sort` invokes the old builtin array sorting which is
terribly slow, whereas `import std.algorithm; arr.sort()` uses
the
On Monday, 7 September 2015 at 10:25:09 UTC, deed wrote:
Right, it's like
int x = 3;
// x + 5; // Just an expression evaluated to 8,
// but what do you want to do with it?
// It won't affect your program and the
// compiler will give you an
On Sunday, 13 September 2015 at 03:20:31 UTC, deed wrote:
string s = "Some text";
s.retro.find("e"); // `Some te` (Surprising to me.
Error? 2.067.1)
Sorry, the above is wrong, .retro.find does indeed return what's
expected.
string s = "Some text";
s.retro.find("e").writeln; //
On Sunday, 13 September 2015 at 03:20:31 UTC, deed wrote:
...
and since `string` is an alias for `const(char)[]`, it's not ...
string is an alias for immutable(char)[], not const(char)[].
http://dlang.org/arrays.html#strings
Sorry about the noise.
On Saturday, 12 September 2015 at 12:51:04 UTC, Namal wrote:
Anyway, there is no .reverse for strings I guess, what is the
way to completely reverse a string in D?
What do you want to do? Do you want to keep your data in original
order, but get a reversed view of it for something, or do you
On Monday, 7 September 2015 at 10:28:20 UTC, deed wrote:
On Monday, 7 September 2015 at 10:25:09 UTC, deed wrote:
writeln(x);// or you can pass it to a function.
I meant `writeln(x + 5)`
If I have just red your post before I started using reverse on
dynamic arrays...
Anyway, there is
On Sunday, 6 September 2015 at 22:04:55 UTC, Namal wrote:
oh, sorry. But I found out what I have been doing wrong besides
that.
arr.sort.uniq;
uniq(arr) or arr.sort.uniq; compiles but doesn't store it in
the arr array, I need to store it in a new one.
Right, it's like
int x = 3;
// x + 5;
On Monday, 7 September 2015 at 10:25:09 UTC, deed wrote:
writeln(x);// or you can pass it to a function.
I meant `writeln(x + 5)`
On Sunday, 6 September 2015 at 20:39:27 UTC, deed wrote:
On Sunday, 6 September 2015 at 17:57:49 UTC, Namal wrote:
Yeah, I just checked, it is 2.066, how can I install the new
version on ubuntu with sudo apt-get?
sudo apt-get install dmd
will give you dmd v2.067.1. Don't know when it will
That should be it though... Could you try this minimal complete
test?
import std.stdio;
import std.algorithm;
void main(string[] args) {
int[] arr = [1, 2, 4, 2, 3, 4, 1];
arr.sort.uniq.writeln;
}
// [1, 2, 3, 4]
yes, it works likte that.
unique(arr) I get
Error: undefined
Well, if you don't type function names right, it will be hard
to help you.
oh, sorry. But I found out what I have been doing wrong besides
that.
arr.sort.uniq;
uniq(arr) or arr.sort.uniq; compiles but doesn't store it in the
arr array, I need to store it in a new one.
On Sunday, 6 September 2015 at 21:01:09 UTC, Namal wrote:
On Sunday, 6 September 2015 at 20:39:27 UTC, deed wrote:
On Sunday, 6 September 2015 at 17:57:49 UTC, Namal wrote:
Yeah, I just checked, it is 2.066, how can I install the new
version on ubuntu with sudo apt-get?
sudo apt-get
On Sunday, 6 September 2015 at 21:18:28 UTC, Namal wrote:
That should be it though... Could you try this minimal
complete test?
import std.stdio;
import std.algorithm;
void main(string[] args) {
int[] arr = [1, 2, 4, 2, 3, 4, 1];
arr.sort.uniq.writeln;
}
// [1, 2, 3, 4]
yes, it
On Sunday, 6 September 2015 at 17:57:49 UTC, Namal wrote:
Yeah, I just checked, it is 2.066, how can I install the new
version on ubuntu with sudo apt-get?
sudo apt-get install dmd
will give you dmd v2.067.1. Don't know when it will be upgraded
to 2.068 though.
Are you on 2.066 or older? Back then std.algorithm hasn't been
split into submodules yet. Just import std.algorithm then
instead of std.algorithm.comparison, std.algorithm.iteration,
etc.
Yeah, I just checked, it is 2.066, how can I install the new
version on ubuntu with sudo apt-get? I
On Sunday, 6 September 2015 at 15:41:34 UTC, Namal wrote:
is there any function that removes double elements in a sorted
array?
std.algorithm.iteration.uniq
http://dlang.org/phobos/std_algorithm_iteration.html#uniq
Note that there's a specialized `std.algorithm.iteration.sum`.
is there any function that removes double elements in a sorted
array?
On Sunday, 6 September 2015 at 15:52:38 UTC, anonymous wrote:
On Sunday, 6 September 2015 at 15:41:34 UTC, Namal wrote:
is there any function that removes double elements in a sorted
array?
std.algorithm.iteration.uniq
http://dlang.org/phobos/std_algorithm_iteration.html#uniq
Hmm, I get
On Sunday, 6 September 2015 at 16:17:29 UTC, Namal wrote:
Error: module comparison is in file
'std/algorithm/comparison.d' which cannot be read
import path[0] = /usr/include/dmd/phobos
import path[1] = /usr/include/dmd/druntime/import
when I try to load the headers like in the example
Are
On Saturday, 5 September 2015 at 18:57:52 UTC, deed wrote:
On Saturday, 5 September 2015 at 17:31:39 UTC, Namal wrote:
Yeah, I have have been trying this example from wiki books
https://en.wikibooks.org/wiki/Learning_D_With_Project_Euler
It is not even compiling.
What exactly is not
On Saturday, 5 September 2015 at 17:31:39 UTC, Namal wrote:
Yeah, I have have been trying this example from wiki books
https://en.wikibooks.org/wiki/Learning_D_With_Project_Euler
It is not even compiling.
What exactly is not compiling?
On Saturday, 5 September 2015 at 14:49:13 UTC, deed wrote:
On Saturday, 5 September 2015 at 14:44:19 UTC, deed wrote:
.map!(s => chomp(s, "\"")
.map!(s => chompPrefix(s, "\"")
should be
.map!(s => chomp(s, "\""))
.map!(s => chompPrefix(s, "\""))
Yeah, I have have been trying this
On Saturday, 5 September 2015 at 12:41:37 UTC, Namal wrote:
Thx guys. Now I try out the split function. I read the file as
a single string?
auto arr = split(cast(string)read(filename),",");
where the file has "A", "B", "C"
and I get the output ["\"A\"", " \"B\"", " \"C\"\n"]
I can
On Friday, 4 September 2015 at 12:09:19 UTC, Edwin van Leeuwen
wrote:
On Friday, 4 September 2015 at 12:06:08 UTC, Edwin van Leeuwen
wrote:
On Friday, 4 September 2015 at 11:50:23 UTC, deed wrote:
import std.algorithm, std.range, std.array, std.string,
std.stdio,
std.conv;
int[] arr1 = [1,
On Saturday, 5 September 2015 at 14:44:19 UTC, deed wrote:
.map!(s => chomp(s, "\"")
.map!(s => chompPrefix(s, "\"")
should be
.map!(s => chomp(s, "\""))
.map!(s => chompPrefix(s, "\""))
On Friday, 4 September 2015 at 07:27:54 UTC, Namal wrote:
On Friday, 4 September 2015 at 01:55:13 UTC, deed wrote:
On Friday, 4 September 2015 at 01:31:28 UTC, Namal wrote:
How can I get just the maximum element? Do I need to give a
range for it?
Use max?
On Friday, 4 September 2015 at 12:06:08 UTC, Edwin van Leeuwen
wrote:
On Friday, 4 September 2015 at 11:50:23 UTC, deed wrote:
import std.algorithm, std.range, std.array, std.string,
std.stdio,
std.conv;
int[] arr1 = [1, 2, 30];
//arr1.max.writeln; // Doesn't work, as you say
On Friday, 4 September 2015 at 11:50:23 UTC, deed wrote:
import std.algorithm, std.range, std.array, std.string,
std.stdio,
std.conv;
int[] arr1 = [1, 2, 30];
//arr1.max.writeln; // Doesn't work, as you say
arr1.reduce!max.writeln;// This does. Prints 30.
Again using reduce is
On Friday, 4 September 2015 at 01:55:13 UTC, deed wrote:
On Friday, 4 September 2015 at 01:31:28 UTC, Namal wrote:
How can I get just the maximum element? Do I need to give a
range for it?
Use max?
http://dlang.org/phobos/std_algorithm_comparison.html#max
Sorry, I don't understand the
On Wednesday, 2 September 2015 at 22:19:11 UTC, wobbles wrote:
On Wednesday, 2 September 2015 at 21:53:20 UTC, Namal wrote:
Thx guys, this helped alot. The next thing I want to do is
read the file line by line and split the stream into words. I
found this example of code that seems to do sort
On Thursday, 3 September 2015 at 22:48:01 UTC, Jordan Wilson
wrote:
On Thursday, 3 September 2015 at 22:21:57 UTC, Namal wrote:
ep18.d(10): Error: no property 'split' for type 'char[]'
/usr/include/dmd/phobos/std/algorithm.d(427):
instantiated from here: MapResult!(__lambda1,
Sorry, I didn't notice the "convert all the elements in it to
integer" part.
I think I saw reference to the to! before...that is one way to
convert.
auto words = file.byLine() // you've all lines in
range
.map!(a => a.split)
.map!(a =>
Actually, need an extra map I think:
auto word = file.byLine()
.map!(a => a.split)
.map!(a => map!(a => to!int(a))(a))
.array();
On Fri, Sep 04, 2015 at 12:18:14AM +, Namal via Digitalmars-d-learn wrote:
[...]
> That being said, when do I have to import std.array and std.string?
> Every time I use std.array? I can obviously use arrays and strings
> without those libs.
Arrays and strings are built into the language; but
On Thursday, 3 September 2015 at 23:54:44 UTC, H. S. Teoh wrote:
On Thu, Sep 03, 2015 at 11:38:54PM +, Namal via
Digitalmars-d-learn wrote:
On Thursday, 3 September 2015 at 23:31:27 UTC, Jordan Wilson
wrote:
>On Thursday, 3 September 2015 at 23:28:37 UTC, Namal wrote:
>>On Thursday, 3
On Thursday, 3 September 2015 at 22:21:57 UTC, Namal wrote:
ep18.d(10): Error: no property 'split' for type 'char[]'
/usr/include/dmd/phobos/std/algorithm.d(427):
instantiated from here: MapResult!(__lambda1, ByLine!(char,
char))
ep18.d(10):instantiated from here:
On Thursday, 3 September 2015 at 23:31:27 UTC, Jordan Wilson
wrote:
On Thursday, 3 September 2015 at 23:28:37 UTC, Namal wrote:
On Thursday, 3 September 2015 at 23:25:52 UTC, Jordan Wilson
wrote:
And also:
import std.algorithm
Sorry, I should have taken the time to answer properly and
fully.
On Thu, Sep 03, 2015 at 11:38:54PM +, Namal via Digitalmars-d-learn wrote:
> On Thursday, 3 September 2015 at 23:31:27 UTC, Jordan Wilson wrote:
> >On Thursday, 3 September 2015 at 23:28:37 UTC, Namal wrote:
> >>On Thursday, 3 September 2015 at 23:25:52 UTC, Jordan Wilson wrote:
> >>>And also:
ep18.d(10): Error: no property 'split' for type 'char[]'
/usr/include/dmd/phobos/std/algorithm.d(427):
instantiated from here: MapResult!(__lambda1, ByLine!(char,
char))
ep18.d(10):instantiated from here: map!(ByLine!(char,
char))
and then a long list to the end of my code
On Thursday, 3 September 2015 at 23:25:52 UTC, Jordan Wilson
wrote:
And also:
import std.algorithm
Sorry, I should have taken the time to answer properly and
fully.
import std.file, std.stdio, std.string, std.conv, std.algorithm;
void main(){
auto file = File("text.txt");
And also:
import std.algorithm
Sorry, I should have taken the time to answer properly and fully.
On Thursday, 3 September 2015 at 23:28:37 UTC, Namal wrote:
On Thursday, 3 September 2015 at 23:25:52 UTC, Jordan Wilson
wrote:
And also:
import std.algorithm
Sorry, I should have taken the time to answer properly and
fully.
import std.file, std.stdio, std.string, std.conv, std.algorithm;
On Thu, Sep 03, 2015 at 11:22:09PM +, Namal via Digitalmars-d-learn wrote:
> >Sorry, I didn't notice the "convert all the elements in it to integer"
> >part.
> >I think I saw reference to the to! before...that is one way to convert.
> >
> >auto words = file.byLine() // you've all
On Thu, Sep 03, 2015 at 11:28:36PM +, Namal via Digitalmars-d-learn wrote:
> On Thursday, 3 September 2015 at 23:25:52 UTC, Jordan Wilson wrote:
> >And also:
> >import std.algorithm
> >
> >Sorry, I should have taken the time to answer properly and fully.
>
> import std.file, std.stdio,
On Friday, 4 September 2015 at 00:18:15 UTC, Namal wrote:
On Thursday, 3 September 2015 at 23:54:44 UTC, H. S. Teoh wrote:
[...]
Thx Theo, this and the lack of foolproof tutorials were the
reason why I gave up on D 2 years ago and went instead to C++.
But I am not giving up this time. That
On Friday, 4 September 2015 at 01:31:28 UTC, Namal wrote:
How can I get just the maximum element? Do I need to give a
range for it?
Use max? http://dlang.org/phobos/std_algorithm_comparison.html#max
Hope this helps.
Yes, it does. I have a question about arrays. I can sort an array
A by sort(A);
How can I get just the maximum element? Do I need to give a range
for it?
On Wednesday, 2 September 2015 at 15:04:10 UTC, cym13 wrote:
On Wednesday, 2 September 2015 at 13:46:54 UTC, Namal wrote:
Thx, cym. I have a question about a D strings though. In c++ I
would just reuse the string buffer with the "=" how can I
clear the string after i store a line in the buffer
On Wednesday, 2 September 2015 at 15:04:10 UTC, cym13 wrote:
You can also reset a variable to its initial state (what you
would hav had if you hadn't initialized it) using:
buffer.init();
Huh? That doesn't work... Instead, use:
buffer = buffer.init;
Thx guys, this helped alot. The next thing I want to do is read
the file line by line and split the stream into words. I found
this example of code that seems to do sort of something like it.
How can I modyfy it so I can store the words in an array of
strings? Is a => a.length the iterator
On Wednesday, 2 September 2015 at 21:53:20 UTC, Namal wrote:
Thx guys, this helped alot. The next thing I want to do is read
the file line by line and split the stream into words. I found
this example of code that seems to do sort of something like
it. How can I modyfy it so I can store the
On Wednesday, 2 September 2015 at 13:12:39 UTC, cym13 wrote:
On Wednesday, 2 September 2015 at 13:01:31 UTC, Namal wrote:
Hello,
I want to read a file line by line and store each line in a
string. I found this example with byLine and ranges. First of
all, do I need the range lib at all to do
Hello,
I want to read a file line by line and store each line in a
string. I found this example with byLine and ranges. First of
all, do I need the range lib at all to do this and if so what is
the range of the end of the file?
On Wednesday, 2 September 2015 at 13:01:31 UTC, Namal wrote:
Hello,
I want to read a file line by line and store each line in a
string. I found this example with byLine and ranges. First of
all, do I need the range lib at all to do this and if so what
is the range of the end of the file?
On Wednesday, 2 September 2015 at 13:46:54 UTC, Namal wrote:
On Wednesday, 2 September 2015 at 13:12:39 UTC, cym13 wrote:
On Wednesday, 2 September 2015 at 13:01:31 UTC, Namal wrote:
Hello,
I want to read a file line by line and store each line in a
string. I found this example with byLine
On Wednesday, 2 September 2015 at 13:46:54 UTC, Namal wrote:
Thx, cym. I have a question about a D strings though. In c++ I
would just reuse the string buffer with the "=" how can I clear
the string after i store a line in the buffer and do something
with it. I also tried to append a line to
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