Hi all.

Having some issues porting code from alpha.  Did the "join" command get broken since alpha?

This is the REFERENCE text from the website:

// works identically with float[] and String[]
int list[] = new list[3];
list[0] = 8;
list[1] = 67;
list[2] = 5;
String formatted = join(list, ", ");
// formatted now contains "8, 67, 5"


There is a typo in the above.  This version works in alpha:


// works identically with float[] and String[]
int list[] = new INT [3];
list[0] = 8;
list[1] = 67;
list[2] = 5;
String formatted = join(list, ", ");
// formatted now contains "8, 67, 5"


However, it doesn't work in BETA (0087).  I think this is partly because 'list' has become a declared variable or somesuch, but also it seems that "join" works for Strings but is now broken for joining any array of ints or floats.

For example:

int myList[] = new int[3];
myList[0] = 8;
myList[1] = 67;
myList[2] = 5;
String formatted = join(myList, ", ");


Yields:


C:/..../Application Data/Processing/build/Temporary_7986_4172.java:7:20:7:37: Semantic Error: No applicable overload for a method with signature "join(int[], java.lang.String)" was found in type "processing.core.PApplet". Perhaps you wanted the overloaded version "java.lang.String join(java.lang.String[] $1, java.lang.String $2);" instead?



Similarly the reference float example doesn't work:

float f[] = new float[3];
f[0] = 1.3;
f[1] = 92.8;
f[2] = 0.7;
// 3 digits on the left of the decimal point
// 2 digits to the right of the decimal point
String zerofloats = join(f, " ", 3, 2);


Yields:


C:/...../Application Data/Processing/build/Temporary_6114_4672.java:7:21:7:38: Semantic Error: No applicable overload for a method with signature "join(float[], java.lang.String, int, int)" was found in type "processing.core.PApplet". Perhaps you wanted the overloaded version "java.lang.String join(java.lang.String[] $1, java.lang.String $2);" instead?


Or has this been spotted already?  Might be worth changing the reference text to not use "list" either way...

TC,

R

hm, that was something that changed between 68 and 69 actually but i guess didn't get documented/updated properly.

join() only works on strings, but you can use nf() on a list of ints or floats to convert them to a String array. so the ref should read:

Code:

// works identically with float[] and String[]  
int list[] = new int[3];  
list[0] = 8;  
list[1] = 67;  
list[2] = 5;  
String formatted = join(nf(list, 0), ", ");  
// formatted now contains "8, 67, 5"  
println(formatted); 

and the second one, which makes the reasoning behind the api change a little clearer (why have multiple versions of both nf and join?) should look like this:

Code:

float f[] = new float[3];  
f[0] = 1.3;  
f[1] = 92.8;  
f[2] = 0.7;  
// 3 digits on the left of the decimal point  
// 2 digits to the right of the decimal point  
String zerofloats = join(nf(f, 3, 2), " ");  
println(zerofloats);