{"id":6724,"date":"2022-09-04T20:06:11","date_gmt":"2022-09-04T14:36:11","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-passing-to-a-same-function-matrices-with-different-sizes-of-both-dimensions\/"},"modified":"2022-09-04T20:06:11","modified_gmt":"2022-09-04T14:36:11","slug":"solved-passing-to-a-same-function-matrices-with-different-sizes-of-both-dimensions","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-passing-to-a-same-function-matrices-with-different-sizes-of-both-dimensions\/","title":{"rendered":"[Solved] Passing to a same function matrices with different sizes of both dimensions"},"content":{"rendered":"

[ad_1]
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You should use a typedef<\/code> so that you don’t have to use any awful syntax:<\/p>\n

using matrix_t = int[3][3];\n<\/code><\/pre>\n
And you should pass your args by reference whenever possible:<\/p>\n
void handle_matrix(const matrix_t &mat){\n    \/\/ do something with 'mat'\n}\n<\/code><\/pre>\n
If you want to use the original syntax without a typedef<\/code>:<\/p>\n
void handle_matrix(const int (&mat)[3][3]){\n    \/\/ ...\n}\n<\/code><\/pre>\n
and if you want to use the original syntax and pass by pointer:<\/p>\n
void handle_matrix(const int (*mat)[3]){\n    \/\/ ...\n}\n<\/code><\/pre>\n
But then you lose type safety, so I’d recommend against this and just go with the nicest option: typedef<\/code> and pass by reference.<\/p>\n
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EDIT<\/h2>\n
You said in a comment on @Kerrek SB’s answer that your matrices will be different sizes.<\/p>\n
So here is how to handle that and still keep the nice method:<\/p>\n
template<size_t Columns, size_t Rows>\nusing matrix_t = int[Columns][Rows];\n\ntemplate<size_t Columns, size_t Rows>\nvoid handle_matrix(const matrix_t<Columns, Rows> &mat){\n    \/\/ ...\n}\n<\/code><\/pre>\n
Take into account that I’m presuming you can use C++14 in my answer, if you leave a comment I can modify it for any other version.<\/p>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            8<\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Passing to a same function matrices with different sizes of both dimensions <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] You should use a typedef so that you don’t have to use any awful syntax: using matrix_t = int[3][3]; And you should pass your args by reference whenever possible: void handle_matrix(const matrix_t &mat){ \/\/ do something with ‘mat’ } If you want to use the original syntax without a typedef: void handle_matrix(const int (&mat)[3][3]){ … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,1635,1331],"class_list":["post-6724","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-constants","tag-matrix"],"yoast_head":"\n[Solved] Passing to a same function matrices with different sizes of both dimensions - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-passing-to-a-same-function-matrices-with-different-sizes-of-both-dimensions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Passing to a same function matrices with different sizes of both dimensions - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You should use a typedef so that you don’t have to use any awful syntax: using matrix_t = int[3][3]; And you should pass your args by reference whenever possible: void handle_matrix(const matrix_t &mat){ \/\/ do something with 'mat' } If you want to use the original syntax without a typedef: void handle_matrix(const int (&mat)[3][3]){ ... 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