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Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
...ause the latter could lead to overflow of signed integers where the former doesn't. Even with guaranteed wrap-around behaviour for overflow of signed two's complement integers, it would change the result (if data[c] is 30000, the product would become -1294967296 for the typical 32-bit ints with wrap...
Why does changing the returned variable in a finally block not change the return value?
...clause later changes the value of s (after the return statement completes) does not (at that point) change the return value.
Note that the above deals with changes to the value of s itself in the finally block, not to the object that s references. If s was a reference to a mutable object (which Stri...
How does a PreparedStatement avoid or prevent SQL injection?
I know that PreparedStatements avoid/prevent SQL Injection. How does it do that? Will the final form query that is constructed using PreparedStatements will be a string or otherwise?
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What does it mean when an HTTP request returns status code 0?
What does it mean when JavaScript network calls such as fetch or XMLHttpRequest, or any other type of HTTP network request, fail with an HTTP status code of 0?
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What does “atomic” mean in programming?
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Does this applies to C# and .NET too? If yes, in order to foo gets an atomic behavir, the CLR must be 64-bit?
– Fabiano
Sep 21 '15 at 15:59
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What does the caret operator (^) in Python do?
...__() or __rxor__() method of the object as needed, which for integer types does a bitwise exclusive-or.
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How does having a dynamic variable affect performance?
...dynamic in C#. I've read dynamic makes the compiler run again, but what does it do?
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Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]
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Your second point is wrong. conversion does take place.
– Felix Kling
Sep 21 '11 at 9:29
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Why is volatile not considered useful in multithreaded C or C++ programming?
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The problem with volatile in a multithreaded context is that it doesn't provide all the guarantees we need. It does have a few properties we need, but not all of them, so we can't rely on volatile alone.
However, the primitives we'd have to use for the remaining properties also provide t...
What does pylint's “Too few public methods” message mean
...on some code, and receiving the error "Too few public methods (0/2)". What does this message mean? The pylint docs are not helpful:
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