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Why is it impossible to build a compiler that can determine if a C++ function will change the value
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@mrsoltys, quantum computers are "only" exponentially faster for some problems, they can not solve undecidable problems.
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Add line break to 'git commit -m' from the command line
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Sandra
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answered Feb 21 '11 at 10:12
Simon RichterSimon Richter
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MySQL ON vs USING?
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415
It is mostly syntactic sugar, but a couple differences are noteworthy:
ON is the more general...
Downcasting in Java
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edited Aug 14 '19 at 19:31
answered Dec 19 '08 at 12:20
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Converting Secret Key into a String and Vice Versa
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You can convert the SecretKey to a byte array (byte[]), then Base64 encode that to a String. To convert back to a SecretKey, Base64 decode the String and use it in a SecretKeySpec to rebuild your original SecretKey.
For Java 8
SecretKey to String:
// create new key
SecretKey secretKey =...
What's faster, SELECT DISTINCT or GROUP BY in MySQL?
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What is a callback?
What's a callback and how is it implemented in C#?
11 Answers
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How to read a file in Groovy into a string?
I need to read a file from the file system and load the entire contents into a string in a groovy controller, what's the easiest way to do that?
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Ways to circumvent the same-origin policy
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votes
The document.domain method
Method type: iframe.
Note that this is an ifra...
How to write an async method with out parameter?
...ible on this MSDN thread: http://social.msdn.microsoft.com/Forums/en-US/d2f48a52-e35a-4948-844d-828a1a6deb74/why-async-methods-cannot-have-ref-or-out-parameters
As for why async methods don't support out-by-reference parameters?
(or ref parameters?) That's a limitation of the CLR. We chose to
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