\nModern C++\/CLI programs should almost always use vectors and iteriators in preference to the lower-level arrays and pointers, and strings to replace C-style array based character strings. Well designed programs use arrays and pointers only in the internals of class implementations where speed is essential. As well as being less powerful, C-style strings are the root cause of many many security problems. A vector is a collection of objects of a single type, each of which has an associated integer index. Its much the same as an array but unlike arrays it allows new elements to be added at run time.\n<\/p>\n
\nIf your going to be resizing your array as you add and remove items often using a list is best (resizing an array causes it to be copied). If you need to be able to access array elements by index (rather than using for each) then use an array. If you need both then you can use a list to create the final set of objects and then convert it to an array, or just use an array.\n<\/p>\n
\r\n\r\n\tarray<Byte> ^MyArray;\t\t\t\t\/\/Declare a handle first\r\n\tMyArray = gcnew array<Byte>(3);\t\t\/\/Create the array\r\n<\/code><\/pre>\n\nor use this to declare it:\n<\/p>\n
\r\n\r\n\tarray<Byte> ^MyArray = gcnew array<Byte>(3);\t\t\/\/Declare and allocate space for the array\r\n<\/code><\/pre>\n\nor this to set values at creation\n<\/p>\n
\r\n\r\n\tarray<Byte> ^yValues = {10, 27.5, 7, 12, 45.5};\r\n<\/code><\/pre>\n\nMulti Dimension Arrays
\n<\/h4>\n\r\n\r\n\tarray<String^, 2> ^MyMultiDimensionArray = gcnew array<String^, 2>(3, 10);\r\n\tMyMultiDimensionArray[0,0] = "A0";\r\n\tMyMultiDimensionArray[0,5] = "B0";\r\n\tMyMultiDimensionArray[1,0] = "A1";\r\n\tMyMultiDimensionArray[1,5] = "B1";\r\n\tMyMultiDimensionArray[2,0] = "A2";\r\n\tMyMultiDimensionArray[2,5] = "B2";\r\n<\/code><\/pre>\n\nAccessing Arrays Items
\n<\/h4>\n\r\n\r\n\tpos[0] = 1;\t\t\t\t\t\t\/\/How to use the array\r\n\tpos[2] = 5;\r\n<\/code><\/pre>\n\nFor Each
\n<\/h4>\n\r\n\r\n\tarray<Byte> ^values = {3, 5, 20, 14};\r\n\tfor each (int item in values)\r\n\t{\r\n\t\titem = 0;\r\n\t}\r\n\tor\r\n\tarray<String^> ^names = {"Bill", "Jane", "Ted"};\r\n\tfor each (String^ name in names)\r\n\t{\r\n\t\tname = name + "\\n";\r\n\t}\r\n<\/code><\/pre>\n\nCalling A Function With An Array
\n<\/h4>\n
\nHave this in the function parameters:\n<\/p>\n
\r\n\tvoid some_function (array<Byte> ^distanceData)<\/code><\/pre>\n\nAnd call like this\n<\/p>\n
\r\n\tsome_function(values);\t\t\/\/No '^' character - it knows its a handle<\/code><\/pre>\n\nPass An Array Handle To Use By Some Other Function In A Class
\n<\/h4>\n
\nDefine the array handle in the class definition:\n<\/p>\n
\r\n\tarray<Byte> ^MyArrayName;\t\t\t\/\/Define the handle but don't create the actual array<\/code><\/pre>\n\nThen within some function you can just use:\n<\/p>\n
\r\n\tMyArrayName = AnotherArrayName;\t\t\/\/Assign the handle of another array - you read and write the other array not a copy<\/code><\/pre>\n\nClass Public Array
\n<\/h4>\n
\nIn the public variable section:\n<\/p>\n
\r\n\tarray<Byte> ^MyArrayName;<\/code><\/pre>\n\nIn the constructor:\n<\/p>\n
\r\n\tMyArrayName = gcnew array<Byte>(6);<\/code><\/pre>\n\nArray Length
\n<\/h4>\n\r\n\tMyArrayName->Length<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"Modern C++\/CLI programs should almost always use vectors and iteriators in preference to the lower-level arrays and pointers, and strings to replace C-style array based character strings. Well designed programs use arrays and pointers only in the internals of class implementations where speed is essential. As well as being less powerful, C-style strings are the […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[],"class_list":["post-295","post","type-post","status-publish","format-standard","hentry","category-arrays"],"_links":{"self":[{"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/posts\/295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/comments?post=295"}],"version-history":[{"count":13,"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/posts\/295\/revisions"}],"predecessor-version":[{"id":1483,"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/posts\/295\/revisions\/1483"}],"wp:attachment":[{"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/media?parent=295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/categories?post=295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ibex.tech\/visualcpp\/wp-json\/wp\/v2\/tags?post=295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}