{"id":10073,"date":"2015-07-27T01:44:43","date_gmt":"2015-07-27T05:44:43","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=10073"},"modified":"2015-08-04T10:14:36","modified_gmt":"2015-08-04T14:14:36","slug":"valarray-slice","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=10073","title":{"rendered":"valarray slice"},"content":{"rendered":"<p style=\"text-align: justify;\">\/* The following code example is taken from the book * &#8220;The C++ Standard Library &#8211; A Tutorial and Reference&#8221; * by Nicolai M. Josuttis, Addison-Wesley, 1999 * * (C) Copyright Nicolai M. Josuttis 1999. * Permission to copy, use, modify, sell and distribute this software * is granted provided this copyright notice appears in all copies. * This software is provided &#8220;as is&#8221; without express or implied * warranty, and with no claim as to its suitability for any purpose. *\/<\/p>\n<pre style=\"text-align: justify;\">#include &lt;iostream&gt;<\/pre>\n<pre>#include &lt;valarray&gt;\r\nusing namespace std; \r\n\r\n\/\/ print valarray line-by-line\r\ntemplate&lt;class T&gt;\r\nvoid printValarray (const valarray&lt;T&gt;&amp; va, int num)\r\n{\r\n\u00a0\u00a0 for (int i=0; i&lt;va.size()\/num; ++i) {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 for (int j=0; j&lt;num; ++j) {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 cout &lt;&lt; va[i*num+j] &lt;&lt; ' ';\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }\r\n\u00a0\u00a0\u00a0\u00a0 cout &lt;&lt; endl;\r\n\u00a0\u00a0 }\r\n\u00a0\u00a0 cout &lt;&lt; endl;\r\n} \r\n\r\nint main()\r\n{\r\n\u00a0\u00a0 \/* valarray with 12 elements\r\n\u00a0\u00a0\u00a0\u00a0 * - four rows\r\n\u00a0\u00a0\u00a0\u00a0 * - three columns\r\n\u00a0\u00a0\u00a0\u00a0 *\/\r\n\u00a0\u00a0 valarray&lt;double&gt; va(12); \r\n\r\n\u00a0\u00a0 \/\/ fill valarray with values\r\n\u00a0\u00a0 for (int i=0; i&lt;12; i++) {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 va[i] = i;\r\n\u00a0\u00a0 } \r\n\r\n\u00a0\u00a0 printValarray (va, 3);<\/pre>\n<pre>\u00a0\u00a0 \/\/ first column = second column raised to the third column\r\n\u00a0\u00a0 va[slice(0,4,3)] = pow (valarray&lt;double&gt;(va[slice(1,4,3)]),\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 valarray&lt;double&gt;(va[slice(2,4,3)])); \r\n\r\n\u00a0\u00a0 printValarray (va, 3); \r\n\u00a0\u00a0 \/\/ create valarray with three times the third element of va\r\n\u00a0\u00a0 valarray&lt;double&gt; vb(va[slice(2,4,0)]);<\/pre>\n<pre>\u00a0\r\n\u00a0\u00a0 \/\/ multiply the third column by the elements of vb\r\n\u00a0\u00a0 va[slice(2,4,3)] *= vb;\r\n\u00a0\u00a0 printValarray (va, 3); \r\n\u00a0\u00a0 \/\/ print the square root of the elements in the second row\r\n\u00a0\u00a0 \/\/printValarray (sqrt(valarray&lt;double&gt;(va[slice(3,3,1)])));<\/pre>\n<pre>\u00a0\u00a0 \/\/ double the elements in the third row\r\n\u00a0\u00a0 va[slice(2,4,3)] = valarray&lt;double&gt;(va[slice(2,4,3)]) * 2.0;<\/pre>\n<pre>\u00a0\u00a0 printValarray (va, 3);\r\n}<\/pre>\n<pre>\/*<\/pre>\n<pre>0 1 2\r\n3 4 5\r\n6 7 8\r\n9 10 11<\/pre>\n<pre>1 1 2\r\n1024 4 5\r\n5.7648e+006 7 8\r\n1e+011 10 11<\/pre>\n<pre>1 1 4\r\n1024 4 10\r\n5.7648e+006 7 16\r\n1e+011 10 22<\/pre>\n<pre>1 1 8\r\n1024 4 20\r\n5.7648e+006 7 32\r\n1e+011 10 44<\/pre>\n<pre>*\/<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\/* The following code example is taken from the book * &#8220;The C++ Standard Library &#8211; A Tutorial and Reference&#8221; * by Nicolai M. Josuttis, Addison-Wesley, 1999 * * (C) Copyright Nicolai M. Josuttis 1999. * Permission to copy, use, modify, sell and distribute this software * is granted provided this copyright notice appears in &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=10073\">Continue reading<\/a><\/p>\n","protected":false},"author":130,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1439,1417],"tags":[],"class_list":["post-10073","post","type-post","status-publish","format-standard","hentry","category-c----","category-code-programming-samples--","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":10089,"url":"http:\/\/bangla.sitestree.com\/?p=10089","url_meta":{"origin":10073,"position":0},"title":"valarray with double value inside","author":"","date":"July 29, 2015","format":false,"excerpt":"\/* The following code example is taken from the book \u00a0* \"The C++ Standard Library - A Tutorial and Reference\" \u00a0* by Nicolai M. Josuttis, Addison-Wesley, 1999 \u00a0* \u00a0* (C) Copyright Nicolai M. Josuttis 1999. \u00a0* Permission to copy, use, modify, sell and distribute this software \u00a0* is granted provided\u2026","rel":"","context":"In &quot;C++&quot;","block_context":{"text":"C++","link":"http:\/\/bangla.sitestree.com\/?cat=1420"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10070,"url":"http:\/\/bangla.sitestree.com\/?p=10070","url_meta":{"origin":10073,"position":1},"title":"Print minimum, maximum, and sum of the valarray","author":"","date":"July 27, 2015","format":false,"excerpt":"\/* The following code example is taken from the book * \"The C++ Standard Library - A Tutorial and Reference\" * by Nicolai M. Josuttis, Addison-Wesley, 1999 * * (C) Copyright Nicolai M. Josuttis 1999. * Permission to copy, use, modify, sell and distribute this software * is granted provided\u2026","rel":"","context":"In &quot;C++&quot;","block_context":{"text":"C++","link":"http:\/\/bangla.sitestree.com\/?cat=1420"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":62213,"url":"http:\/\/bangla.sitestree.com\/?p=62213","url_meta":{"origin":10073,"position":2},"title":"valarray with double value inside #Programming Code Examples #C++ #Valarray","author":"Author-Check- Article-or-Video","date":"May 15, 2021","format":false,"excerpt":"\/* The following code example is taken from the book * \"The C++ Standard Library - A Tutorial and Reference\" * by Nicolai M. Josuttis, Addison-Wesley, 1999 * * (C) Copyright Nicolai M. Josuttis 1999. * Permission to copy, use, modify, sell and distribute this software * is granted provided\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":27259,"url":"http:\/\/bangla.sitestree.com\/?p=27259","url_meta":{"origin":10073,"position":3},"title":"valarray slice #Programming Code Examples #C++ #Valarray","author":"Author-Check- Article-or-Video","date":"May 15, 2021","format":false,"excerpt":"\/* The following code example is taken from the book * \"The C++ Standard Library - A Tutorial and Reference\" * by Nicolai M. Josuttis, Addison-Wesley, 1999 * * (C) Copyright Nicolai M. Josuttis 1999. * Permission to copy, use, modify, sell and distribute this software * is granted provided\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10556,"url":"http:\/\/bangla.sitestree.com\/?p=10556","url_meta":{"origin":10073,"position":4},"title":"Print three-dimensional valarray line-by-line","author":"","date":"August 29, 2015","format":false,"excerpt":"\/* The following code example is taken from the book \u00a0* \"The C++ Standard Library - A Tutorial and Reference\" \u00a0* by Nicolai M. Josuttis, Addison-Wesley, 1999 \u00a0* \u00a0* (C) Copyright Nicolai M. Josuttis 1999. \u00a0* Permission to copy, use, modify, sell and distribute this software \u00a0* is granted provided\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10550,"url":"http:\/\/bangla.sitestree.com\/?p=10550","url_meta":{"origin":10073,"position":5},"title":"Valarray Example","author":"","date":"August 29, 2015","format":false,"excerpt":"\/* The following code example is taken from the book \u00a0* \"The C++ Standard Library - A Tutorial and Reference\" \u00a0* by Nicolai M. Josuttis, Addison-Wesley, 1999 \u00a0* \u00a0* (C) Copyright Nicolai M. Josuttis 1999. \u00a0* Permission to copy, use, modify, sell and distribute this software \u00a0* is granted provided\u2026","rel":"","context":"In &quot;Ajax&quot;","block_context":{"text":"Ajax","link":"http:\/\/bangla.sitestree.com\/?cat=1418"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/130"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10073"}],"version-history":[{"count":4,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10073\/revisions"}],"predecessor-version":[{"id":10077,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10073\/revisions\/10077"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10073"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10073"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}