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Why do C++ libraries and frameworks never use smart pointers?
...ies issues)
potential cost
The default smart pointer, in that it is cost-free, is unique_ptr. Unfortunately it requires C++11 move semantics, which only appeared recently. All other smart pointers have a cost (shared_ptr, intrusive_ptr) or have less than ideal semantics (auto_ptr).
With C++11 aro...
How do MySQL indexes work?
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@Tutu Kumari: See the question's revisions; feel free to also revise the answer to fit the current question (note the various engines and index types - see e.g. the documentation here: dev.mysql.com/doc/refman/8.0/en/index-btree-hash.html )
– Piskvor l...
How to npm install to a specified directory?
...I have mentioned the specific version of npm I had tried with. Please feel free to update the answer with working commands for other versions too.
– Rohit Sharma
Aug 9 '19 at 7:00
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How do I declare a 2d array in C++ using new?
...l also take extra time when you go to deallocate the matrix, painstakingly free-ing up each individual row allocation. Gets me in a sweat just thinking about it.
There's another reason it's slow. These separate allocations tend to live in discontinuous parts of memory. One row may be at address 1,0...
How can I clear the SQL Server query cache?
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One maight also include DBCC FREEPROCCACHE
– jaraics
Sep 28 '11 at 7:42
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Difference between natural join and inner join
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@philipxy: Thanks, I've made amendments. Please feel free to edit - this or any of my answers - for misstatements and misunderstandings. I'm still learning from you :)
– onedaywhen
Nov 9 '18 at 11:24
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Why are arrays covariant but generics are invariant?
...an Integer also a Number, but an Integer[] is also a Number[], and you are free to pass or assign an Integer[] where a Number[] is called for. (More formally, if Number is a supertype of Integer, then Number[] is a supertype of Integer[].) You might think the same is true of generic types as well --...
How to call any method asynchronously in c#
... of the anonymous delegate. Along with this object comes EndInvoke(…) as free Gift
(4) Use EndInvoke(…) to retrieve the synchronous call’s return value in our case it will be the WebClient's DownloadData(…)’s return value.
*/
try
{
Func<Im...
Effects of the extern keyword on C functions
...-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf>. The actual standard is not free though (the draft is good enough for most purposes).
– dirkgently
May 13 '09 at 9:36
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Using TortoiseSVN how do I merge changes from the trunk to a branch and vice versa?
...eading up on branching/merging with Subversion 1.5 using the excellent and free Version Control with Subversion book. I think that I understand how to use the Subversion command line client to perform the actions that I need most often, which are:
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