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What are the security risks of setting Access-Control-Allow-Origin?
...s answer is not quite correct according to the current CORS standard: "The string '*' cannot be used for a resource that supports credentials." So you cannot force a request to use transient authentication in the form of cookies, cached HTTP authentication or client SSL certificates. However if the ...
Smart pointers: who owns the object? [closed]
C++ is all about memory ownership - aka ownership semantics .
11 Answers
11
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Sorting a list using Lambda/Linq to objects
I have the name of the "sort by property" in a string. I will need to use Lambda/Linq to sort the list of objects.
12 Answe...
How do I check if file exists in jQuery or pure JavaScript?
...n('HEAD', url, false);
http.send();
return http.status!=404;
}
Small changes and it could check for status HTTP status code 200 (success), instead.
EDIT 2: Since sync XMLHttpRequest is deprecated, you can add a utility method like this to do it async:
function executeIfFileExist(src, cal...
what is the difference between ?:, ?! and ?= in regex?
...om the lookahead must be discarded, so the engine steps back from i in the string to u. The lookahead was successful, so the engine continues with i. But i cannot match u. So this match attempt fails.
Let's apply q(?=u)u to quit. The lookahead is positive and is followed by another token. Again, q...
Why do Lua arrays(tables) start at 1 instead of 0?
... is damned weird to start counting at zero. By adopting 1-based array and string indexing, the Lua designers avoided confounding the expectations of their first clients and sponsors.
Although I too found them weird at the beginning, I have learned to love 0-based arrays. But I get by OK with Lua'...
How do I check if a given Python string is a substring of another one? [duplicate]
I have two strings and I would like to check whether the first is a substring of the other. Does Python have such a built-in functionality?
...
PHP prepend leading zero before single digit number, on-the-fly [duplicate]
PHP - Is there a quick, on-the-fly method to test for a single character string, then prepend a leading zero?
3 Answers
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In Node.js, how do I turn a string to a json? [duplicate]
For example, a HTTP REST API just returned me a JSON, but of course it's a string right now. How can I turn it into a JSON?
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std::map strng key编译错误 - C/C++ - 清泛网 - 专注C/C++及内核技术
... key编译错误乱七八糟的错误，原因很简单，少了 #include <string>（注意，不是string.h，如果包含了string.h，请改为string）乱七八糟的错误，原因很简单，少了 #include <string>
（注意，不是string.h，如果包含了string.h，请改为string）ma...