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What is a “surrogate pair” in Java?
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The term "surrogate pair" refers to a means of encoding Unicode characters with high code-points in the UTF-16 encoding scheme.
In the Unicode character encoding, characters are mapped to values between 0x0 and 0x10FFFF.
Internally, Java uses the UTF-16 en...
Why are arrays covariant but generics are invariant?
...ut useful polymorphic programs.
For example, consider writing a function to shuffle an array, or a function that tests two arrays for equality using the Object.equals method on the elements. The implementation does not depend on the exact type of element stored in the array, so it should be possib...
JavaScript console.log causes error: “Synchronous XMLHttpRequest on the main thread is deprecated…”
I have been adding logs to the console to check the status of different variables without using the Firefox debugger.
21 A...
Mac OS X Terminal: Map option+delete to “backward delete word”
Tried to map it from Preferences -> Settings -> Keyboard, but the "key" combo box has only "forward delete" but no "delete". My keyboard on the other hand has only "delete" and no "forward delete"!
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SHA512 vs. Blowfish and Bcrypt [closed]
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It should suffice to say whether bcrypt or SHA-512 (in the context of an appropriate algorithm like PBKDF2) is good enough. And the answer is yes, either algorithm is secure enough that a breach will occur through an implementation flaw, not c...
What is an API key? [closed]
...s it's being used for. By and large, however, an API key is the name given to some form of secret token which is submitted alongside web service (or similar) requests in order to identify the origin of the request. The key may be included in some digest of the request content to further verify the o...
How can bcrypt have built-in salts?
Coda Hale's article "How To Safely Store a Password" claims that:
4 Answers
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Use PHP composer to clone git repo
I'm trying to use composer to automatically clone a git repository from github that isn't in packagist but it's not working and I can't figure out what am I doing wrong.
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Why can't I use switch statement on a String?
Is this functionality going to be put into a later Java version?
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RRSet of type CNAME with DNS name foo.com. is not permitted at apex in zone bar.com
...com . I am managing both in Route53. foo.com hosts my site, and I'd like to direct traffic from bar.com to foo.com . I tried to set up a CNAME record for bar.com pointing to foo.com , but I got the error message:
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