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filtering NSArray into a new NSArray in Objective-C
...y indexesOfObjectsPassingTest:] or write your own category to add a handy -select: or -filter: method (example).
Want somebody else to write that category, test it, etc.? Check out BlocksKit (array docs). And there are many more examples to be found by, say, searching for e.g. "nsarray block catego...
Convert NSArray to NSString in Objective-C
..., @"test", @"string"]
if you need to split on a set of several different characters, use NSString’s componentsSeparatedByCharactersInSet:
NSString *yourString = @"Foo-bar/iOS-Blog";
NSArray *yourWords = [myString componentsSeparatedByCharactersInSet:
[NSCharacterSet characterS...
Virtual/pure virtual explained
...es. What virtual does is to give you polymorphism, that is, the ability to select at run-time the most-derived override of a method.
Consider the following code:
#include <iostream>
using namespace std;
class Base {
public:
void NonVirtual() {
cout << "Base NonVirtual call...
Preventing console window from closing on Visual Studio C/C++ Console application
...ct
Properties > Configuration Properties > Linker > System
Select Console (/SUBSYSTEM:CONSOLE) in SubSystem option or you can just type Console in the text field!
Now try it...it should work
share
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byte[] to file in Java
...
How about charset in this case?
– Pavan
Aug 18 at 7:28
1
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How can I view the shared preferences file using Android Studio?
...in. 4. Start Android Emulator (in my case API 24) 5. Launch stetho-sample (select it from run configuration menu next to green arrow 6. On your PC open latest Chrome browser 7. go by chrome://inspect address 8. chose your emulator in list. 9. In opened window go to Resources tab. 10. Find your share...
Installed Ruby 1.9.3 with RVM but command line doesn't show ruby -v
...
Open Terminal.
Go to Edit -> Profile Preferences.
Select the Title & command Tab in the window opened.
Mark the checkbox Run command as login shell.
close the window and restart the Terminal.
Check this Official Link
...
Android emulator shows nothing except black screen and adb devices shows “device offline”
...Verify Configuration dialog. It forces turn off gpu mode whatever you have selected in the Emulated Performance. So change config.ini directly. hw.gpu.enabled=yes and hw.gpu.mode=on. The config files is normally in /user folder/.android/avd/emulator name.avd/.
– Sungsuh Park
...
Java 8 List into Map
...a better option if this is what you want anyhow.
– Richard Nichols
Oct 29 '14 at 4:41
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Where is Erlang used and why? [closed]
...; none.
That's 5 different versions of the access function.
Erlang will select the most appropriate version given the arguments received. (Config is a structure of type #config which has a type attribute).
That means it is very easy and much clearer than chaining if/else or switch/case to make b...