I was recently thinking if I really liked to use the Multiple assignment in ‘C#’ or if it was less readable. In ‘C’ this syntax was popular as it tended to lead to smaller and quicker code.
So I wondered in C# if the multiple assigment also lead to quicker code. So I quickly wrote some test cases to see which style of code was quicker to execute…<\/p>\n
I took a rather simplistic model to profile, in order to make the tests more repeatable and easy to follow.<\/p>\n
The .NET code followed the followed the structure: Results are in seconds I guess as ever this proves that it is more important to write readable code that requires the minimum of maintanance, rather than trying to outwit the compiler\/CLR. I was recently thinking if I really liked to use the Multiple assignment in ‘C#’ or if it was less readable. In ‘C’ this syntax was popular as it tended to lead to smaller and quicker code.So I wondered in C# if the multiple assigment also lead to quicker code. So I quickly wrote some……<\/p>\n","protected":false},"author":48422,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[],"coauthors":[],"class_list":["post-2267","post","type-post","status-publish","format-standard","hentry","category-blogs"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/posts\/2267","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/users\/48422"}],"replies":[{"embeddable":true,"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/comments?post=2267"}],"version-history":[{"count":2,"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/posts\/2267\/revisions"}],"predecessor-version":[{"id":41357,"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/posts\/2267\/revisions\/41357"}],"wp:attachment":[{"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/media?parent=2267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/categories?post=2267"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/tags?post=2267"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.red-gate.com\/simple-talk\/wp-json\/wp\/v2\/coauthors?post=2267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<\/code><\/p>\n[STAThread] static void Main(string[] args) \n int Count1;\n int Count2;\n int Count3;\n int Count4;\n int Count5;\n int Count6;\n int Count7;\n int Count8;\n\n Count1 =\n Count2 =\n Count3 =\n Count4 =\n Count5 =\n Count6 =\n Count7 =\n Count8 = 100;\n \n\t\t\t\n DateTime time = DateTime.Now;\n for (long i = 0; i < 1000000000; i++)\n {\n int x = 100;\n Count1 = \n Count2 = \n Count3 = \n Count4 = \n Count5 = \n Count6 = \n Count7 = \n Count8 = x;\n }\n\n TimeSpan span = DateTime.Now - time;\n Console.WriteLine(\"Time taken{0}\", span.TotalMilliseconds \/ 1000.0);\n} <\/pre>\n<\/code><\/p>\n\n\n
\n Test<\/td>\n .NET 1.1
Debug Mode<\/td>\n.NET 1.1
under the debugger<\/td>\n.NET 1.1
Release Mode<\/td>\n<\/tr>\n\n Count1=x;Count2=x;…..<\/td>\n 7<\/td>\n 7<\/td>\n 4.5<\/td>\n<\/tr>\n \n Count1=Count2=Count3 …=x;<\/td>\n 9.5<\/td>\n 9.5<\/td>\n 4.5<\/td>\n<\/tr>\n \n <\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
I did test out directly setting the values eg Count1=100; Count2=100; etc as well as using strings. These variations appeared to give similar results. I carried out the same expermiment under .NET 2 and the results were similar just slightly slower in debug mode.
The machine that carried out the tests was an Intel 3.4Ghz P4 running XP SP2 with 1GB RAM.<\/p>\n
So would I use the multiple assignment? Probably not as much as I used to, but when it leads to easier to read code then yes.<\/p>\n","protected":false},"excerpt":{"rendered":"