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Sending a message to nil in Objective-C
As a Java developer who is reading Apple's Objective-C 2.0 documentation: I wonder what " sending a message to nil " means - let alone how it is actually useful. Taking an excerpt from the documentation:
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How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
... apply this transform to a view:
v.transform = CGAffineTransformMakeScale(0.5,0.5);
I expect to see the view appear with its center in the same place as before and at half the size. But depending on its constraints, that may not be what I see at all.
[Actually, there's a second surprise here: ap...
What is the benefit of using “SET XACT_ABORT ON” in a stored procedure?
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Musakkhir Sayyed
5,82099 gold badges3535 silver badges5858 bronze badges
answered Jul 19 '09 at 14:54
Ben GriswoldBen Gris...
What's a quick way to test to see a file exists?
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edited May 23 '19 at 0:12
TheNeil
1,27822 gold badges1010 silver badges3030 bronze badges
answered ...
Could not load file or assembly … The parameter is incorrect
...ctory )
– Liker777
Nov 25 '11 at 13:01
glad to hear it works. remember to accept the answer if it helped :)
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Getting output of system() calls in Ruby
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answered Oct 14 '09 at 0:06
Craig WalkerCraig Walker
42.5k4747 gold badges145145 silver badges198198 bronze badges
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Read user input inside a loop
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107
Read from the controlling terminal device:
read input </dev/tty
more info: http://compgro...
How to draw a path on a map using kml file?
...d.util.Log;
public class MapService {
public static final int MODE_ANY = 0;
public static final int MODE_CAR = 1;
public static final int MODE_WALKING = 2;
public static String inputStreamToString (InputStream in) throws IOException {
StringBuffer out = new StringBuffer();
byte[] b = new...
Add querystring parameters to link_to
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edited May 10 '14 at 17:28
XeNoN
65455 silver badges1616 bronze badges
answered Apr 23 '10...
What differences, if any, between C++03 and C++11 can be detected at run-time?
...le to write a function, which, when compiled with a C compiler will return 0, and when compiled with a C++ compiler, will return 1 (the trivial sulution with
#ifdef __cplusplus is not interesting).
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