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How to store CGRect values in NSMutableArray?
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Store string in array.and then get back string and convert that in CGRect back as per the need.
CGRect rect = CGRectMake( 5, 5, 40, 30 );
NSString* rectAsString = NSStringFromCGRect( rect );
NSMutableArray* array = [NSMutableArray mutableArray];
[array addObject:rectAsString]...
Tricky Google interview question
A friend of mine is interviewing for a job. One of the interview questions got me thinking, just wanted some feedback.
21 A...
Can I “multiply” a string (in C#)?
...r code is elegant for C#, as it currently stands, for this problem. The point I'm trying to make is: (I believe) it would be very easy (for microsoft, as strings are sealed) to extend C# to overload the * operator to allow int * string multiplication. Which would then actually be elegant in some ...
C++ equivalent of StringBuffer/StringBuilder?
...e stream
ss << 4.5 << ", " << 4 << " whatever";
//convert the stream buffer into a string
std::string str = ss.str();
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How do you format the day of the month to say “11th”, “21st” or “23rd” (ordinal indicator)?
... com.google.common.base.Preconditions.*;
String getDayOfMonthSuffix(final int n) {
checkArgument(n >= 1 && n <= 31, "illegal day of month: " + n);
if (n >= 11 && n <= 13) {
return "th";
}
switch (n % 10) {
case 1: return "st";
cas...
How to find an available port?
...sten on any free port.
ServerSocket s = new ServerSocket(0);
System.out.println("listening on port: " + s.getLocalPort());
If you want to use a specific set of ports, then the easiest way is probably to iterate through them until one works. Something like this:
public ServerSocket create(int[] p...
How do pointer to pointers work in C?
How do pointers to pointers work in C?
When would you use them?
14 Answers
14
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Android Camera : data intent returns null
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The default Android camera application returns a non-null intent only when passing back a thumbnail in the returned Intent. If you pass EXTRA_OUTPUT with a URI to write to, it will return a null intent and the picture is in the URI that you passed in.
You can verify this by looking...
How many levels of pointers can we have?
How many pointers ( * ) are allowed in a single variable?
14 Answers
14
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What is the difference between a reference type and value type in c#?
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Your examples are a little odd because while int, bool and float are specific types, interfaces and delegates are kinds of type - just like struct and enum are kinds of value types.
I've written an explanation of reference types and value types in this article. I'd be ...