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How to trigger event when a variable's value is changed?
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One of the best explanations on the entire Web. I think I'm finally understanding Custom Event Handling. Thankful for this post.
– Goodbye
Apr 20 '18 at 11:17
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What is the rationale for all comparisons returning false for IEEE754 NaN values?
...ndefinites on CRAYs; as soon as one were encountered, computation would be best stopped rather than continued for an indefinite time to an Indefinite conclusion. That is why some operations upon NaNs must deliver non-NaN results. Which operations? … The exceptions are C predicates “ x == x ” a...
Difference between a Seq and a List in Scala
...st.
A List is a Seq that is implemented as an immutable linked list. It's best used in cases with last-in first-out (LIFO) access patterns.
Here is the complete collection class hierarchy from the Scala FAQ:
share
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What is the maximum possible length of a .NET string?
...over 2GB and the string type uses UTF-16 (2 bytes for each character), the best you could do is 1,073,741,823, but you're not likely to ever be able to allocate that on a 32-bit machine.
This is one of those situations where "If you have to ask, you're probably doing something wrong."
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How to return smart pointers (shared_ptr), by reference or by value?
...ment-decrement sequence or something like that in modern compilers. So the best way to return a shared_ptr is to simply return by value:
shared_ptr<T> Foo()
{
return shared_ptr<T>(/* acquire something */);
};
This is a dead-obvious RVO opportunity for modern C++ compilers. I know ...
Choosing a Java Web Framework now? [closed]
...skeptics about this component based framework, including me so I'm not the best one to talk about it but...
JSF 2 (+ CDI/Weld): JSF skeptics are encouraged (by Gavin King) to "take a second look". Indeed, I think that JSF 2 is a big improvement, especially with CDI, but... it is still pretty new (un...
Header files for x86 SIMD intrinsics
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20200914: latest best practice: <immintrin.h> (also supported by MSVC)
I'll leave the rest of the answer for historic purposes; it might be useful for older compiler / platform combinations...
As many of the answers and comments have s...
How does the Brainfuck Hello World actually work?
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Best Brainfuck intro I've seen. Honestly you undo BF a bit by your post
– Boyang
Jan 27 '16 at 9:07
3
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Heroku “psql: FATAL: remaining connection slots are reserved for non-replication superuser connectio
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I think moving the database is the best solution to have full control over it. Thanks for that article.
– nathancahill
Jan 17 '13 at 5:37
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Is there a way to check if a file is in use?
... which a malicious user could use to force and exploit in your code.
Your best bet is a try catch / finally which tries to get the file handle.
try
{
using (Stream stream = new FileStream("MyFilename.txt", FileMode.Open))
{
// File/Stream manipulating code here
}
} catch {
//che...