Re: Yes or No Options
On Thursday, 30 July 2015 at 15:14:28 UTC, Chris wrote: On Thursday, 30 July 2015 at 14:20:41 UTC, Alex wrote: My father owns a small software company, specialized in market data products. www.bccgi.com (in case anyone is interested) So programming was basically around all my life. I do a small job in his company and my next task was to learn D. There are two trainees and the three of us have to learn D. Ofc the two trainees have to learn other languages as well. My dad said the reason why we learn this language is that he personally finds it to be a very intuitive language that produces machine code. If he just wanted us to teach programming he said he'd just told us to learn C#. In addition to that he wants to keep up and always have new languages and features in the company (only 8 people). And since we have experts for almost any language here but not a single one for D, it was time for someone to start! Once I started I found it to be really interesting and challenging plus I like solving problems. Thank you for being so nice! I have seen very few communities where beginners are welcomed so well! Very interesting indeed! Care to write an article about it one day? "Learning D as an absolute beginner" or something like that. I wonder, is your father's company listed among those using D? I think there's a list somewhere on Wiki, if not we should have one :-) Sure I'd do something like that! Maybe refering to the Ali Çehreli's book! Question is if my English skills are sufficient.. They aren't in the list because right now nothing is written in D in our company. But the future will look different I according to what my dad told me. Is there a reddit community? How is D generally seen in the internet?
Re: Yes or No Options
On Thursday, 30 July 2015 at 17:48:51 UTC, Ali Çehreli wrote: On 07/30/2015 08:14 AM, Chris wrote: I wonder, is your father's company listed among those using D? I think there's a list somewhere on Wiki, if not we should have one :-) I don't think they use D yet but the page is here: http://wiki.dlang.org/Current_D_Use Ali That's the link. Thanks! I find the reasons Alex gave for using D very interesting. It's beyond all hype and reddit and stuff like that. It shows that D attracts users for what it is, without any hype or sh*t like that.
Re: Yes or No Options
On 07/30/2015 08:14 AM, Chris wrote: I wonder, is your father's company listed among those using D? I think there's a list somewhere on Wiki, if not we should have one :-) I don't think they use D yet but the page is here: http://wiki.dlang.org/Current_D_Use Ali
Re: Yes or No Options
On Thursday, 30 July 2015 at 14:20:41 UTC, Alex wrote: My father owns a small software company, specialized in market data products. www.bccgi.com (in case anyone is interested) So programming was basically around all my life. I do a small job in his company and my next task was to learn D. There are two trainees and the three of us have to learn D. Ofc the two trainees have to learn other languages as well. My dad said the reason why we learn this language is that he personally finds it to be a very intuitive language that produces machine code. If he just wanted us to teach programming he said he'd just told us to learn C#. In addition to that he wants to keep up and always have new languages and features in the company (only 8 people). And since we have experts for almost any language here but not a single one for D, it was time for someone to start! Once I started I found it to be really interesting and challenging plus I like solving problems. Thank you for being so nice! I have seen very few communities where beginners are welcomed so well! Very interesting indeed! Care to write an article about it one day? "Learning D as an absolute beginner" or something like that. I wonder, is your father's company listed among those using D? I think there's a list somewhere on Wiki, if not we should have one :-)
Re: Yes or No Options
My father owns a small software company, specialized in market data products. www.bccgi.com (in case anyone is interested) So programming was basically around all my life. I do a small job in his company and my next task was to learn D. There are two trainees and the three of us have to learn D. Ofc the two trainees have to learn other languages as well. My dad said the reason why we learn this language is that he personally finds it to be a very intuitive language that produces machine code. If he just wanted us to teach programming he said he'd just told us to learn C#. In addition to that he wants to keep up and always have new languages and features in the company (only 8 people). And since we have experts for almost any language here but not a single one for D, it was time for someone to start! Once I started I found it to be really interesting and challenging plus I like solving problems. Thank you for being so nice! I have seen very few communities where beginners are welcomed so well!
Re: Yes or No Options
On Monday, 27 July 2015 at 15:50:11 UTC, Alex wrote: Hey guys! I am super new to programming and still trying to learn the very basics via a book that I bought. Out of interest: what made you start with D? It's not the most obvious choice for a programming novice.
Re: Yes or No Options
On Monday, 27 July 2015 at 18:23:57 UTC, Alex wrote: On Monday, 27 July 2015 at 17:31:08 UTC, Ali Çehreli wrote: On 07/27/2015 08:50 AM, Alex wrote: > a book that I bought The program looks a lot like one of the exercises in this chapter: http://ddili.org/ders/d.en/if.html You didn't actually pay for it, right? Because it is free. :) Ali Yes! I am really sorry. I did not buy it. Thanks for this book, it is really cool to learn and understandable even for people like me that have never had any contact with programming! Good on you to pick it up and learn. It's a very interesting field once you get past the initial learning curve! Be sure to continue to ask questions here, I find most people here are very willing to help newbies :)
Re: Yes or No Options
So I now combined a few of the options here and got this, which
finally works:
import std.stdio;
import std.string;
import std.random;
void main()
{
while (true) {
string yesno;
int weiter;
char[] uschi;
write("Press ENTER to roll the dice!");
readln(uschi);
if (uschi == "\n") {
auto rng = uniform(1, 6);
writeln(rng);
if (rng < 4) {
writeln("You won!");
}
else if ((rng >= 4) && (rng <= 6)) {
writeln("I won!");
}
else if (rng > 6){
writeln("ERROR: Invalid Value");
}
writeln("Do you want to play again? Y/N?");
yesno = readln();
if (yesno.toLower() != "y\n") {
writeln("Damn it");
break;
}
}
}
}
Thank you ! :)
Re: Yes or No Options
On Monday, 27 July 2015 at 17:31:08 UTC, Ali Çehreli wrote: On 07/27/2015 08:50 AM, Alex wrote: > a book that I bought The program looks a lot like one of the exercises in this chapter: http://ddili.org/ders/d.en/if.html You didn't actually pay for it, right? Because it is free. :) Ali Yes! I am really sorry. I did not buy it. Thanks for this book, it is really cool to learn and understandable even for people like me that have never had any contact with programming!
Re: Yes or No Options
On Monday, 27 July 2015 at 16:48:00 UTC, Alex wrote:
Okay. By pure trying I found out what I did wrong:
Apparently by typing Y I entered the shift key. Could that have
been the problem?
I changed it to a small y and it at least jumped back to the
commandline instead of just being stuck.
And by changing:
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno == "y") {
writeln("Yeah!");
}
to:
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno != "y") {
writeln("Yeah!");
}
So instead of == I used !=
Now it works. But I still do not know why..
readln includes the '\n' at the end, so when you typed "Y" and
pressed enter, readln returned "Y\n" which != "Y".
Re: Yes or No Options
On Monday, 27 July 2015 at 17:21:33 UTC, Anonymous wrote:
On Monday, 27 July 2015 at 16:48:00 UTC, Alex wrote:
Okay. By pure trying I found out what I did wrong:
Apparently by typing Y I entered the shift key. Could that
have been the problem?
I changed it to a small y and it at least jumped back to the
commandline instead of just being stuck.
And by changing:
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno == "y") {
writeln("Yeah!");
}
to:
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno != "y") {
writeln("Yeah!");
}
So instead of == I used !=
Now it works. But I still do not know why..
Check out what is the length of yesno after you do your readln.
Ex. writeln(yesno.length)
std.string.chomp may help.
Also, notice in Namespace's answer above the use of:
if (yesno.toLower() != "y")
This ensures that whether the user typed 'Y' or 'y' then check
works properly. Which is likely what the user expects.
The 'Shift' key does not add any new symbols to the string (it
only modifies what symbols are added).
Re: Yes or No Options
On 07/27/2015 08:50 AM, Alex wrote: > a book that I bought The program looks a lot like one of the exercises in this chapter: http://ddili.org/ders/d.en/if.html You didn't actually pay for it, right? Because it is free. :) Ali
Re: Yes or No Options
On Monday, 27 July 2015 at 16:48:00 UTC, Alex wrote:
Okay. By pure trying I found out what I did wrong:
Apparently by typing Y I entered the shift key. Could that have
been the problem?
I changed it to a small y and it at least jumped back to the
commandline instead of just being stuck.
And by changing:
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno == "y") {
writeln("Yeah!");
}
to:
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno != "y") {
writeln("Yeah!");
}
So instead of == I used !=
Now it works. But I still do not know why..
Check out what is the length of yesno after you do your readln.
Ex. writeln(yesno.length)
std.string.chomp may help.
Re: Yes or No Options
Okay. By pure trying I found out what I did wrong:
Apparently by typing Y I entered the shift key. Could that have
been the problem?
I changed it to a small y and it at least jumped back to the
commandline instead of just being stuck.
And by changing:
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno == "y") {
writeln("Yeah!");
}
to:
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno != "y") {
writeln("Yeah!");
}
So instead of == I used !=
Now it works. But I still do not know why..
Re: Yes or No Options
Thank you! That helped me a lot.
I'm sure that - in order to get to the point to repeat the whole
first part of the program - I'll have to read further in the
instructions I have BUT let's just say that I don't want it to
repeat the first part of the program but just writeln something
like "Ok let's do it again!" if I enter Y and press enter.
I now got to the point where the program doesn't quit but if I
enter "Y" and hit Enter, nothing happens.
I do understand how to define an int and then compare it to a
number I entered and do something if the number was
smaller/bigger/the same etc.
But how do I get the programm to simply write a line if I enter a
letter like Y?
With the code I got here it does not work. What is wrong with
this part here:
writeln("Do you want to play again? Y/N?");
readf(" %s", &yesno);
readln();
if (yesno == "Y") {
writeln("Yeah!");
}
Doesn't the code mean: Write "Do you want to play again? Y/N?".
Read keyboard input and define "yesno" by what was entered. And
then: If what was entered was a "Y", write the following line
"Yeah!".
Where is my error in thinking?
Sorry guys, I know it's probably something very easy..
Re: Yes or No Options
Look at my example:
import std.stdio;
import std.string;
import std.conv : to;
void main()
{
while (true) {
write("Roll the dice: Enter a number: ");
int dieNumber = readln.strip.to!int;
if (dieNumber < 4) {
writeln("You won!");
}
else if ((dieNumber >= 4) && (dieNumber <= 6)) {
writeln("I won!");
}
else if (dieNumber > 6){
writeln("ERROR: Invalid Value");
}
writeln("Do you want to play again? Y/N?");
immutable string yesno = readln.strip;
if (yesno.toLower() != "y")
break;
writeln("Let's go again!");
}
}
With the while loop you really can "go again" ;)
Re: Yes or No Options
On Monday, 27 July 2015 at 15:50:11 UTC, Alex wrote:
readf(" %s", &dieNumber);
What happens here is a bit tricky and trips up a lot of
programmers: readf leaves the end-of-line character in the
buffer, which readln then sees as meaning its job is done.
When you enter, say, 5, then press enter, the input looks like:
"5\n". (\n represents the newline aka end-of-line character).
readf " %s" first skips any spaces. There's none, so it doesn't
matter.
Then it reads in a number. So it takes the 5, leaving the rest of
the input behind so that \n from pressing enter is still
there.
readln reads everything it can until it hits a \n, picking up
where readf left off. So the result is it immediately sees the \n
that readf stopped on and it also stops.
An easy fix is to stick an extra readln() after the readf:
readf(" %s", &dieNumber);
readln(); // tell it to skip the rest of the line
// the rest of your code is unchanged
The next thing you'll have to face is actually going again when
they enter Y. (BTW be aware that this is case sensitive and
readln leaves the newline at the end of the input too! So
entering "y" won't work. And when you enter "Y"... the program
will see "Y\n", so it won't match "let's go again" either.)
But to actually go again, you'll probably want to read about
loops. I'll let you play with it a little from here though.
Yes or No Options
Hey guys!
I am super new to programming and still trying to learn the very
basics via a book that I bought.
My problem is the following:
import std.stdio;
import std.string;
void main()
{
char[] yesno;
write("Roll the dice: Enter a number!");
int dieNumber;
readf(" %s", &dieNumber);
if (dieNumber < 4) {
writeln("You won!");
}
else if ((dieNumber >= 4) && (dieNumber <= 6)) {
writeln("I won!");
}
else if (dieNumber > 6){
writeln("ERROR: Invalid Value");
}
writeln("Do you want to play again? Y/N?");
readln(yesno);
if (yesno == "Y") {
writeln("Let's go again!");
}
}
The program quits after "writeln("Do you want to play again?
Y/N?");"
It ignores readln.
Furthermore: What I am actually trying to do is: If I type "Y",
the programm should just rerun from the beginning.
I am really new to programming and there is probably a much
easier way but this is all I know to this point.
Thanks in advance!
