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How does Facebook Sharer select Images and other metadata when sharing my URL?
...ipt or jQuery?
No. Much like search engine crawlers, the Facebook scraper does not execute scripts so whatever meta tags are present when the page is downloaded are the meta tags that are used for image selection.
Adding these tags causes my page to no longer validate. How can I fix this?
You can...
Why does C# allow {} code blocks without a preceding statement?
Why does C# allow code blocks without a preceding statement (e.g. if , else , for , while )?
9 Answers
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What does auto do in margin:0 auto?
What does auto do in margin:0 auto; ?
7 Answers
7
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Mongoose's find method with $or condition does not work properly
...pecific to your problem or the requirement of ObjectId()? What if my param doesn't have 12 characters? Thanks!
– yusong
Dec 2 '16 at 20:13
6
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Why does Java's Arrays.sort method use two different sorting algorithms for different types?
...entity (there is no way to distinguish two ints with the same value), this does not matter for them. But for reference types, it could cause problems for some applications. Therefore, a stable merge sort is used for those.
OTOH, a reason not to use the (guaranteed n*log(n)) stable merge sort for pr...
Optimizing away a “while(1);” in C++0x
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Does someone have a good explanation of why this was necessary to allow?
Yes, Hans Boehm provides a rationale for this in N1528: Why undefined behavior for infinite loops?, although this is WG14 document the rationale appli...
Why does Android use Java? [closed]
...y therefore cannot interfere with another app other than using OS API. But does this feature have ARM CPUs? I actually have no idea. If not, This would be great + for Java on this platform.
– B.Gen.Jack.O.Neill
Aug 24 '10 at 21:42
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What does $$ mean in the shell?
...e in a shell for temp files was to use a double dollar sign ( $$ ). This does produce a number that varies from time to time... but if you call it repeatedly, it returns the same number. (The solution is to just use the time.)
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How exactly does the android:onClick XML attribute differ from setOnClickListener?
...;
}
});
// some more code
public void myFancyMethod(View v) {
// does something very interesting
}
Above is a code implementation of an OnClickListener. And this is the XML implementation.
XML Implementation
<?xml version="1.0" encoding="utf-8"?>
<!-- layout elements -->
&l...
Does the Go language have function/method overloading?
...
No it does not.
See the Go Language FAQ, and specifically the section on overloading.
Method dispatch is simplified if it doesn't need to do type matching as well. Experience with other languages told us that having a variety ...