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Cross-Origin Request Headers(CORS) with PHP headers

... Access-Control-Allow-Headers does not allow * as accepted value, see the Mozilla Documentation here. Instead of the asterisk, you should send the accepted headers (first X-Requested-With as the error says). ...
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Open link in new tab or window [duplicate]

... It shouldn't be your call to decide whether the link should open in a new tab or a new window, since ultimately this choice should be done by the settings of the user's browser. Some people like tabs; some like new windows. Using _blank will tell...
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How to get the first line of a file in a bash script?

...bshell, and using an external command (any external command) means you're calling execve(), invoking the linker and loader (if it's using shared libraries, which is usually the case), etc. – Charles Duffy Aug 1 '17 at 16:17 ...
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In where shall I use isset() and !empty()

... it's not a good idea to use this operator for math in case "0" is accidentally a string. This can be dangerous. Instead, use basic >, < and == operators and convert variables using intval() or floatval(). – kaleazy Feb 14 at 18:08 ...
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PHP script to loop through all of the files in a directory?

I'm looking for a PHP script that loops through all of the files in a directory so I can do things with the filename, such as format, print or add it to a link. I'd like to be able to sort the files by name, type or by date created/added/modified. (Think fancy directory "index".) I'd also like to be...
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What really is a deque in STL?

I was looking at STL containers and trying to figure what they really are (i.e. the data structure used), and the deque stopped me: I thought at first that it was a double linked list, which would allow insertion and deletion from both ends in constant time, but I am troubled by the promise made ...
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How can I make a time delay in Python? [duplicate]

...print less frequently than that, because it takes time to print and handle all the buffers that entails (possibly doing a kernel context switch), and to register the alarm signal, but... yeah. A little under once per minute. – Parthian Shot Jun 17 '15 at 19:29 ...
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NPM - How to fix “No readme data”

... Actually, in newer versions of NPM, it doesn't matter if the package is private or not. You must have a README.md file. @gustavohenke answer suits better every version. – ViniciusPires Dec 2...
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How can I mock requests and the response?

...thons mock package to mock Pythons requests module. What are the basic calls to get me working in below scenario? 9 Answ...
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Reset Entity-Framework Migrations

... I used IgnoreChanges on the initial migration, but now I want to delete all my migrations and start with an initial migration with all of the logic. ...