Re: Do static variables in class consume memory of instances?
On Thursday, 22 July 2021 at 16:05:41 UTC, Adam D Ruppe wrote: On Thursday, 22 July 2021 at 15:50:59 UTC, Mark Lagodych wrote: Do static variables consume *any* memory in instances, perhaps just for pointers to the variables? nope Or does compiler automatically convert `someObject.someStaticMember` to `SomeClass.someStaticMember`? right Thank you! Didn't see your reply.
Re: Do static variables in class consume memory of instances?
On Thursday, 22 July 2021 at 15:50:59 UTC, Mark Lagodych wrote:
Do static variables consume *any* memory in instances, perhaps
just for pointers to the variables?
Figured it out.
Let's try:
```d
import std.stdio;
class A {
static int
a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z;
}
void main() {
writeln(__traits(classInstanceSize, A));
}
```
Prints: `16`
Without static: `120`
Difference: `104`, exactly `26 * int.sizeof`
So, the answer is **NO**, no memory is taken from instances.
Do static variables in class consume memory of instances?
[D documentation](https://dlang.org/spec/attribute.html#static) says: Static data has one instance per thread, not one per object. Do static variables consume *any* memory in instances, perhaps just for pointers to the variables? Or does compiler automatically convert `someObject.someStaticMember` to `SomeClass.someStaticMember`?
Re: Can static variables in methods be local for each object?
On Tuesday, 20 July 2021 at 09:24:07 UTC, Mark Lagodych wrote:
```d
void main()
{
X x1 = new X;
X x2 = new X;
x1.x(0).writeln;
x2.x(0).writeln;
x1.x(17).writeln;
x2.x(0).writeln;
}
```
Ow, sorry, I forgot to say. It prints:
```
1234
1234
17
17
```
Can static variables in methods be local for each object?
Let's say I have this code:
```d
import std.stdio;
class X {
int x(int param) {
static int myvar = 1234;
if (param == 0) return myvar;
else { myvar = param; return myvar; }
}
}
void main()
{
X x1 = new X;
X x2 = new X;
x1.x(0).writeln;
x2.x(0).writeln;
x1.x(17).writeln;
x2.x(0).writeln;
}
```
Is there a way to make myvar local to each instance of `X`
without making it a variable of `X`? Just curious.
Re: How to update DUB online documentation?
On Sunday, 28 March 2021 at 18:02:02 UTC, Adam D. Ruppe wrote: On Sunday, 28 March 2021 at 17:59:49 UTC, Mark Lagodych wrote: But auto-generated online documentation and online code viewer show an outdated version (0.0.1). How to solve that? Click on the documentation page, then notice at the very bottom of the page, in small text, there's "Clear Cache". Click that and it will regenerate immediately. Otherwise you can request a specific version in the url but this is easier. Wow! Thank you very much! That worked! P.S. That button is extremely hard to notice :-S
How to update DUB online documentation?
I am trying to create a DUB package. It is already registered here [ https://code.dlang.org/packages/fejix ] and its repo is here [ https://github.com/MarkLagodych/Fejix/ ]. I have updated it (0.0.3 -> 0.0.4) several hours ago. "dub fetch fejix" fetches the last version of my code (0.0.4) as it is supposed. But auto-generated online documentation and online code viewer show an outdated version (0.0.1). How to solve that?
Re: How to update terminal output?
On Sunday, 28 March 2021 at 16:45:29 UTC, dog2002 wrote:
I mean, I want to write a string without a new line. For
example, some command line applications have progress bars.
For a single line string I use \r. But it doesn't work for a
multiple line string - the application is just adding new lines.
See http://www.climagic.org/mirrors/VT100_Escape_Codes.html
Basically, you just need to do this:
writeln("\033[" ~ cmd);
where cmd is your VT100 command and \033 is an Escape character.
Although some (all?) of that commands do not work in the Windows
terminal. For instance, you can change background color ONLY
using Windows API.
