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How to check for an active Internet connection on iOS or macOS?
...simple. The way I do this is:
//Class.h
#import "Reachability.h"
#import <SystemConfiguration/SystemConfiguration.h>
- (BOOL)connected;
//Class.m
- (BOOL)connected
{
Reachability *reachability = [Reachability reachabilityForInternetConnection];
NetworkStatus networkStatus = [reachab...
Paging with Oracle
... adapter, and dataset, and the dataadapter.Fill(dataset) method on the results from the stored proc. If I have "Page Number" and "Number of records per page" as integer values I can pass as parameters, what would be the best way to get back just that particular section. Say, if I pass 10 as a page...
Why are side-effects modeled as monads in Haskell?
...filename) world1
in (putStrLn contents) world2 -- results in ((), world3)
We see a pattern here. The functions are called like this:
...
(<result-of-f>, worldY) = f worldX
(<result-of-g>, worldZ) = g <result-of-f> worldY
...
So we could define a...
How do I initialize a TypeScript object with a JSON object
...ickly.
Also as a note: Of course deserializable classes need to have default constructors as is the case in all other languages where I'm aware of deserialization of any kind. Of course, Javascript won't complain if you call a non-default constructor with no arguments, but the class better be prepa...
jQuery: what is the best way to restrict “number”-only input for textboxes? (allow decimal points)
...ery simple solution for this:
It allows you to use any kind of input filter on a text <input>,
including various numeric filters. This will correctly handle
Copy+Paste, Drag+Drop, keyboard shortcuts, context menu operations,
non-typeable keys, and all keyboard layouts.
See this ans...
Why do we usually use || over |? What is the difference?
...isBlue()) {
foo.doSomething();
}
Using | and & instead could result in a NullPointerException being thrown here.
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Merging: Hg/Git vs. SVN
...ch or trunk, respectively):
*---*---x---*---y---*---*---*---M2 <-- A
\ \ /
--*----M1---*---*---/ <-- B
In the case the above ASCII-art gets broken: Branch 'B' is created (forked) from branch 'A' at revision 'x', then later branch 'A' ...
combinations between two lists?
...
The result is exactly what I want, but is it possible to share the logic behind how to do it? If I convert my code to C or Java, I won't have access to zip or itertools(although they make life very very easy)
–...
Preferred way to create a Scala list
...y I propose
def listTestD = (0 to 3).toList
or
def listTestE = for (i <- (0 to 3).toList) yield i
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Automapper: Update property values without creating a new object
...
Use the overload that takes the existing destination:
Mapper.Map<Source, Destination>(source, destination);
Yes, it returns the destination object, but that's just for some other obscure scenarios. It's the same object.
...