Re: [eigen] still the solve() API debate |

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*To*: eigen@xxxxxxxxxxxxxxxxxxx*Subject*: Re: [eigen] still the solve() API debate*From*: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>*Date*: Fri, 11 Sep 2009 10:49:40 -0400*Dkim-signature*: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=ARt3pRLXSrJjQkTUOARJ4FKZfGS8YeDjnqUme5pR+Ko=; b=PXrJq0KpCTacS7oEFlj6QsZAIE/mc0AbE44i3h9fIsdCyFqZS/8XNCAWErK7ULIT+S yBDat9VdoG+aDaLoOgdp+NquCOFVoaRZipRuPLapWcBRBI7gCkKqZjNDes802je7IjBR f/xszY8Dw9E0GdOrf5P6MHWF7aU9pFXa/1Wc8=*Domainkey-signature*: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=aQ6JCmszkwR6rpW82806vsulYEkIm+Htad2hkW7dTrjs7qRMnUXaNSauzH9yoGILb2 jHOPHIUuOYrCkeIPBDLCKHFq41hSkP6ZuxxH/tp5yWNNnMwfz0YR63dbdRiUMSaBlXzH 0Y6vmFwxZ3Lw/l7Jej2P1a+f1XwAgbgJoh9oA=

2009/9/11 Robert Bocquier <robert.bocquier@xxxxxxxxxxx>: > Well, I don't fully understand this thread, so may be I will say something > stupid, but I found these "asymmetric" writing of swap pretty unreadable. Nevermind, we're not going to use them anyway :) > Why is this impossible ? > Eigen::swap(matrix.row(i), matrix.row(j)); Same reason as above: one can't pass matrix.row(i) as non-constant reference (because it is a temporary) so one must pass it as constant reference, and then constness can't be honored. So this is possible but has the same drawback as the current implementation, actually it's a bit worse even because it forgets constness of both sides instead of just the right-hand side. Actually my first proposal, matrix.row(i) = Eigen::swap(matrix.row(j)); doesn't work either. So my only potential proposal was: matrix.row(i) = matrix.row(j).swap(); and you're already 2 persons to reject it, so let's forget about it :) Benoit

**References**:**[eigen] still the solve() API debate***From:*Benoit Jacob

**Re: [eigen] still the solve() API debate***From:*Keir Mierle

**Re: [eigen] still the solve() API debate***From:*Benoit Jacob

**Re: [eigen] still the solve() API debate***From:*Gael Guennebaud

**Re: [eigen] still the solve() API debate***From:*Benoit Jacob

**Re: [eigen] still the solve() API debate***From:*Hauke Heibel

**Re: [eigen] still the solve() API debate***From:*Benoit Jacob

**Re: [eigen] still the solve() API debate***From:*Hauke Heibel

**Re: [eigen] still the solve() API debate***From:*Benoit Jacob

**Re: [eigen] still the solve() API debate***From:*Robert Bocquier

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