confusing C code, someone explain it for me?
By : user2137840
Date : March 29 2020, 07:55 AM
I wish did fix the issue. I guess what you might have in mind is that the evaluation order of function parameters is not standardized in C. Since counter() will return a different result on each call, and the result of foo(2, 3) is different from that of foo(3, 2), compiling and executing this code may give you different results on different platforms. On the same platform, however, it is deterministic, as others have explained well. [Update] (To be precise: once compiled into an executable on a specific platform with specific compiler options, all executions will produce the same output. However, as commenters pointed out, it might even produce different output on the same platform when built with different compilation options.)[/Update]
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HOW to understand this EXPLAIN plan..? It is looking confusing to me
By : muko034
Date : March 29 2020, 07:55 AM
I wish this help you I have a table with 130Mill rows in it. When i EXPLAIN the query, it is showing 130Mill in the rowns column. , Try code :
ANALYZE TABLE TABLE1
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Can someone explain confusing unittest code?
By : Naimul Islam
Date : March 29 2020, 07:55 AM
this one helps. First of all, the test can pass even if "valid_outcomes" contains more than what's valid. (In your opinion, list_outcome_1). It just means it sometimes won't fail when it should. Second, I think the test is correct: the doc doesn't say that the first "k" items will be placed last in their original order, nor does it guarantee the same for the last "k" items. So any order of [1,2] could appear at the end of the list, and any order of [5,6] could appear at the beginning.
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Confusing MySQL Explain Results
By : user7901938
Date : March 29 2020, 07:55 AM
This might help you The first was able to use the index for the GROUP BY user_id, thereby avoiding the sort (tmp+filesort). However, it had to skip over any rows with the dates not in the range, hence a larger Rows. The second used the date range, hence fewer rows, but then had to do the sort.
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Confusing CSS - can anyone explain
By : user2809887
Date : March 29 2020, 07:55 AM
I wish this helpful for you I understand the dot in css is class but what is h2 dot h1 supposed to be selecting in the following I have found in a page? , h2.h1 is selecting an h2 element with the class h1: code :
h1 {
font-size: 30px;
line-height: 32px;
color: red;
}
h2.h1 {
font-size: 36px;
line-height: 40px;
color: blue;
}
.title.title_size_medium h1 {
font-size: 38px;
line-height: 38px;
color: grey;
}
<h1>Just an h1 element</h1>
<h2 class="h1">h2 element with the class "h1"</h2>
<div class="title title_size_medium">
<h1>An h1 element inside a div with the class "title" and "title_size_medium"</h1>
</div>
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