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Objective-C Static Class Level variables
...m, each of which stores a unique ID. In C#, Java etc I can define a static int currentID and each time i set the ID i can increase the currentID and the change occurs at the class level not object level. Can this be done in Objective-C? I've found it very hard to find an answer for this.
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C# switch statement limitations - why?
... a constant time branch using a jump table. However, in sparse cases as pointed out by Ivan Hamilton the compiler may generate something else entirely.
This is actually quite easy to verify by writing various C# switch statements, some sparse, some dense, and looking at the resulting CIL with the ...
error, string or binary data would be truncated when trying to insert
...ne of the INSERT statements you are attempting to insert a too long string into a string (varchar or nvarchar) column.
If it's not obvious which INSERT is the offender by a mere look at the script, you could count the <1 row affected> lines that occur before the error message. The obtained nu...
@synthesize vs @dynamic, what are the differences?
...e'd accessor it must still be backed by a real field (e.g., if you write -(int) getFoo(); you must have an int foo; field). If the value is being produce by something else (e.g. calculated from other fields) then you have to use @dynamic.
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C# Lazy Loaded Automatic Properties
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@AbleArcher Pointing out a new language feature is a pitch now?
– Alexander Derck
Sep 26 '18 at 21:29
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MVC 5 Seed Users and Roles
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I literally copied and pasted this code into my Seed method in a new mvc 5 web application, and then ran "update-database" in the package manager console. It adds the role (I can see it in AspNetRoles table), but when it comes to the line manager.AddToRole(user.Id...
How to install Boost on Ubuntu
...ll-dev
sudo apt install aptitude
aptitude search boost
Then paste this into a C++ file called main.cpp:
#include <iostream>
#include <boost/array.hpp>
using namespace std;
int main(){
boost::array<int, 4> arr = {{1,2,3,4}};
cout << "hi" << arr[0];
return 0;
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Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
...my_func($arr);
var_dump($arr);
It'll give this output :
array
0 => int 10
1 => int 20
Which indicates the function has not modified the "outside" array that was passed as a parameter : it's passed as a copy, and not a reference.
If you want it passed by reference, you'll have to modi...
Emacs mode for Stack Overflow's markdown
...iting italics /like this/, and then export to markdown.
From emacs you can convert to markdown by selecting the region, hitting C-u M-S-\ and typing pandoc -r org -t markdown, getting output like this:
In other words, you can keep writing in org-mode, including writing italics *like this*, and then...
Does a finally block always get executed in Java?
...e JVM crashes first
If the JVM reaches an infinite loop (or some other non-interruptable, non-terminating statement) in the try or catch block
If the OS forcibly terminates the JVM process; e.g., kill -9 <pid> on UNIX
If the host system dies; e.g., power failure, hardware error, OS panic, et c...