c++ - Is there any static vector of types? -

-

is there static (compiler-time) vector of types? example, can type given constant integer index, following

vector<int, float>::type<0> int  vector<int, float>::type<1> float

if want manipulate vector of types @ compile time, can use boost::mpl::vector boost.mpl library. beware, head might explode.

using namespace boost::mpl;  typedef at_c<vector<int, float>, 0>::type t1; // int typedef at_c<vector<int, float>, 1>::type t2; // float

http://www.boost.org/doc/libs/1_54_0/libs/mpl/doc/refmanual/vector.html


Comments

Post a Comment

Popular posts from this blog

javascript - Unusual behaviour when drawing lots of images onto a large canvas -

-
in javascript code, download bunch of links of images, , draw them canvas in grid theme. number of links there are, , set width , height of canvas accordingly, there 200 images per row. height based on total number images. problem noticing based on height use, images show on canvas. example, if set height 12 rows, see images, if set on that, no images show up. when setting in 1 row, images show in firefox 23. ie9 , chrome29 shows nothing. does know if there wrong here, or stable way drawing lots of images large canvas? thanks. function onprofilesuccessmethod(sender, args) { alert("request arrived"); var listenumerator, piccount, item, picobj, path, office, ctx, x, y, imageobj; listenumerator = listitems.getenumerator(); piccount = listitems.get_count(); var w = 125; var h = 150; var rl = 200; var canvas = document.createelement('canvas'); canvas.id = "picgallery"; canvas.width = w * rl; canvas....
Read more

how can i manage url using .htaccess in php? -

-
i want manage url of website right showing me www.computermall.co.in/product_details.php?prdid=34 but want www.computermall.co.in/product_details/34 how can it? i have tried this options +followsymlinks -multiviews rewriteengine on rewritebase /computermall # uri-path directly the_request variable rewritecond %{the_request} ^(get|head)\s/(.*)\.php [nc] # strip extension , redirect permanently rewriterule .* /%2 [r=301,l,nc] rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewritecond %{request_uri} !\.php [nc] # map internally original resource rewriterule ^(.*)$ $1.php [l,qsa] try this: rewriteengine on rewriterule ^product_details/prdid/([^/]*)$ /product_details?prdid=$1 [l] edit: removed leading slash
Read more

javascript - Chart.js - setting tooltip z-index -

-
http://jsfiddle.net/gmannib/j2mwpj43/7/ ^ see sample fiddle above. notice how tooltips piechart go underneath "earth" icon have in middle there? there way set z-index property of tooltips above earth icon? thought work? race.tooltip.style.zindex = "5"; i'm still learning...thank kind help! just give higher z-index value canvas , done. see demo . css code canvas#race{position:relative; z-index:1;}
Read more