Hi all,
Suppose that I want to insert some variable values into an assert error message.
The easy way to do this is something like:
assert(someCondition, text("x = ", x, ", cannot blah blah blah"));
However, the use of text() prevents me from applying @safe and other such
attributes to
On Thu, Sep 12, 2013 at 09:12:18PM +0200, bearophile wrote:
> H. S. Teoh:
>
> >In phobos git HEAD, std.format has been made pure @safe nothrow (and
> >CTFE-able), so you should be able to write your assert as:
> >
> > assert(condition, format("x = %s, blahblah", x));
>
> With the latest DMD f
On Thursday, September 12, 2013 13:21:26 H. S. Teoh wrote:
> On Thu, Sep 12, 2013 at 04:07:24PM -0400, Jonathan M Davis wrote:
> > On Thursday, September 12, 2013 12:42:34 H. S. Teoh wrote:
> > > On Thu, Sep 12, 2013 at 09:12:18PM +0200, bearophile wrote:
> > > > H. S. Teoh:
> > > > >In phobos git
On Thu, Sep 12, 2013 at 10:17:30PM +0200, Joseph Rushton Wakeling wrote:
> On 12/09/13 22:07, Jonathan M Davis wrote:
> >format can't be nothrow, because it throws when you screw up the
> >format specifiers. You have to wrap it in a try-catch block and
> >assert(0) in the catch block if you want to
H. S. Teoh:
In phobos git HEAD, std.format has been made pure @safe nothrow
(and
CTFE-able), so you should be able to write your assert as:
assert(condition, format("x = %s, blahblah", x));
With the latest DMD from updated GIT head:
import std.string: format;
void main() pure nothr
On Thursday, September 12, 2013 12:42:34 H. S. Teoh wrote:
> On Thu, Sep 12, 2013 at 09:12:18PM +0200, bearophile wrote:
> > H. S. Teoh:
> > >In phobos git HEAD, std.format has been made pure @safe nothrow (and
> > >
> > >CTFE-able), so you should be able to write your assert as:
> > > assert(condi
On Thu, Sep 12, 2013 at 04:07:24PM -0400, Jonathan M Davis wrote:
> On Thursday, September 12, 2013 12:42:34 H. S. Teoh wrote:
> > On Thu, Sep 12, 2013 at 09:12:18PM +0200, bearophile wrote:
> > > H. S. Teoh:
> > > >In phobos git HEAD, std.format has been made pure @safe nothrow
> > > >(and CTFE-ab
On Thursday, September 12, 2013 22:17:30 Joseph Rushton Wakeling wrote:
> On 12/09/13 22:07, Jonathan M Davis wrote:
> > format can't be nothrow, because it throws when you screw up the format
> > specifiers. You have to wrap it in a try-catch block and assert(0) in the
> > catch block if you want
On 12/09/13 22:07, Jonathan M Davis wrote:
format can't be nothrow, because it throws when you screw up the format
specifiers. You have to wrap it in a try-catch block and assert(0) in the catch
block if you want to put it in a nothrow function. std.datetime does this in
at least a few places.
On 12/09/13 20:49, H. S. Teoh wrote:
In phobos git HEAD, std.format has been made pure @safe nothrow (and
CTFE-able), so you should be able to write your assert as:
assert(condition, format("x = %s, blahblah", x));
Don't think it will work on 2.063.2, though, since it was a relatively
r
On Thu, Sep 12, 2013 at 08:13:37PM +0200, Joseph Rushton Wakeling wrote:
> Hi all,
>
> Suppose that I want to insert some variable values into an assert
> error message. The easy way to do this is something like:
>
> assert(someCondition, text("x = ", x, ", cannot blah blah blah"));
>
> How
On 12/09/13 22:23, Jonathan M Davis wrote:
You can put the try-catch in a version(assert) block to get around that
problem, but it is true that it's not exactly ideal. However, there really
isn't any way around that with a function that takes a format string unless
you want it to ignore bad argum
On Thu, Sep 12, 2013 at 11:37:10PM +0200, Joseph Rushton Wakeling wrote:
> On 12/09/13 22:23, Jonathan M Davis wrote:
> >You can put the try-catch in a version(assert) block to get around
> >that problem, but it is true that it's not exactly ideal. However,
> >there really isn't any way around that
On Thursday, 12 September 2013 at 20:07:40 UTC, Jonathan M Davis
wrote:
On Thursday, September 12, 2013 12:42:34 H. S. Teoh wrote:
On Thu, Sep 12, 2013 at 09:12:18PM +0200, bearophile wrote:
> H. S. Teoh:
> >In phobos git HEAD, std.format has been made pure @safe
> >nothrow (and
> >
> >CTFE-ab
On Thu, Sep 12, 2013 at 11:45:07PM +0200, Meta wrote:
> On Thursday, 12 September 2013 at 20:07:40 UTC, Jonathan M Davis
> wrote:
[...]
> >format can't be nothrow, because it throws when you screw up the
> >format specifiers. You have to wrap it in a try-catch block and
> >assert(0) in the catch bl
On Thursday, 12 September 2013 at 22:04:20 UTC, H. S. Teoh wrote:
Currently, this is not possible, because the format string may
be a runtime-computed value. For example:
...
When you don't have a runtime computed format string, though
(which is
generally the case for my code, at least), it
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