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How is “int* ptr = int()” value initialization not illegal?
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int() is a constant expression with a value of 0, so it's a valid way of producing a null pointer constant. Ultimately, it's just a slightly different way of saying int *ptr = NULL;
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How to write iOS app purely in C
...gt;
#include <objc/runtime.h>
#include <objc/message.h>
// This is a hack. Because we are writing in C, we cannot out and include
// <UIKit/UIKit.h>, as that uses Objective-C constructs.
// however, neither can we give the full function declaration, like this:
// int UIApplicati...
What is the difference between a string and a byte string?
...working with a library which returns a byte string and I need to convert this to a string.
7 Answers
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C# vs C - Big performance difference
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edited May 23 '17 at 12:10
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111 silver...
performSelector may cause a leak because its selector is unknown
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Solution
The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored, and it's easy to work around. Here's how:
if (!_controller) { return; }
SEL selector = NSSelectorFromString(@"someMethod");
IMP i...
Receive result from DialogFragment
I am using DialogFragments for a number of things: choosing item from list, entering text.
13 Answers
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What is considered a good response time for a dynamic, personalized web application? [closed]
...ex web application that includes dynamic content and personalization, what is a good response time from the server (so excluding network latency and browser rendering time)? I'm thinking about sites like Facebook, Amazon, MyYahoo, etc. A related question is what is a good response time for a backe...
Is a Java string really immutable?
We all know that String is immutable in Java, but check the following code:
15 Answers
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Can someone explain the dollar sign in Javascript?
The code in question is here:
9 Answers
9
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What are the differences between WCF and ASMX web services?
...ces. I have used a lot of web services in my earlier stage, and now there is this new thing introduced called WCF. I can still create WCF that function as a web service. I think there will be more stuff in WCF.
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