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diff --git a/usth/ICT2.7/P4L5 Software Refactoring Subtitles/19 - Cost of Refactoring - lang_en_vs4.srt b/usth/ICT2.7/P4L5 Software Refactoring Subtitles/19 - Cost of Refactoring - lang_en_vs4.srt deleted file mode 100644 index e09868d..0000000 --- a/usth/ICT2.7/P4L5 Software Refactoring Subtitles/19 - Cost of Refactoring - lang_en_vs4.srt +++ /dev/null @@ -1,127 +0,0 @@ -1 -00:00:00,080 --> 00:00:03,800 -Let's also talk about the cost of refactoring. Refactoring might be - -2 -00:00:03,800 --> 00:00:06,750 -free or almost free if you're using a tool to do refactoring - -3 -00:00:06,750 --> 00:00:08,570 -as we did in our demo. But that's not always the - -4 -00:00:08,570 --> 00:00:12,530 -case. In many cases, refactoring involves quite a bit of manual work - -5 -00:00:12,530 --> 00:00:16,309 -if you're doing some manual refactoring. And how much that costs - -6 -00:00:16,309 --> 00:00:19,460 -depends on how well the operations on the source code are supported. - -7 -00:00:19,460 --> 00:00:22,379 -You might have partial support from an ID. You might have complete - -8 -00:00:22,379 --> 00:00:25,017 -support, in which case it's greater. Or you might have no support, - -9 -00:00:25,017 --> 00:00:26,879 -in which case you have to be very careful about - -10 -00:00:26,879 --> 00:00:28,888 -how you change your code and how you check that you - -11 -00:00:28,888 --> 00:00:32,030 -didn't change the behavior of the code. There's also an additional - -12 -00:00:32,030 --> 00:00:34,460 -cost associated with refactoring. Remember - -13 -00:00:34,460 --> 00:00:36,990 -that refactoring relies heavily on testing - -14 -00:00:36,990 --> 00:00:39,808 -after each small step of refactoring. So you might have - -15 -00:00:39,808 --> 00:00:43,451 -to develop test cases, specifically to check your refactoring. And even - -16 -00:00:43,451 --> 00:00:47,163 -if you have an existing test because, for example, you're working - -17 -00:00:47,163 --> 00:00:50,235 -some agile context and therefore you develop a lot of UNIX - -18 -00:00:50,235 --> 00:00:53,550 -test cases before writing your code. And therefore you have a good - -19 -00:00:53,550 --> 00:00:56,635 -regression test with it you can use every time you modify your code. - -20 -00:00:56,635 --> 00:00:59,550 -Nevertheless, when you refactor and you change your code, you might need - -21 -00:00:59,550 --> 00:01:03,255 -to update your test so it's not only the development of the test - -22 -00:01:03,255 --> 00:01:05,379 -cases but also it's maintaining the test cases. And if you have - -23 -00:01:05,379 --> 00:01:07,970 -a lot of test cases, you have to maintain more test cases. So - -24 -00:01:07,970 --> 00:01:12,460 -that's a cost that is not directly visible but can affect quite - -25 -00:01:12,460 --> 00:01:15,800 -a bit the overall cost of refactoring and the overall cost of system - -26 -00:01:15,800 --> 00:01:18,342 -development therefore. And finally, you should not - -27 -00:01:18,342 --> 00:01:21,191 -under estimate the cost of documentation maintenance. - -28 -00:01:21,191 --> 00:01:24,241 -Applying refactoring may involve changes in interfaces, - -29 -00:01:24,241 --> 00:01:26,528 -names, for example, names of classes. And - -30 -00:01:26,528 --> 00:01:29,384 -when you make this kind of changes, you might need to update the documentation, - -31 -00:01:29,384 --> 00:01:30,890 -and that's also cost. It's something that - -32 -00:01:30,890 --> 00:01:32,900 -takes effort and therefore should be considered. |