We'd be interested to hear any experiences with the pros and cons of ActiveMQ vs RabbitMQ vs ZeroMQ. Information about any other interesting message queues is also welcome.
Given a PNG in a web context with some transparent pixels and some non-transparent pixels, is there a way in Javascript to determine if a user has clicked on a non-transparent pixel? A webkit-only solution would be perfectly acceptable.
The question is how to write a program that measures how many times a character appears in a string in a generalizable way in python.
The code that I wrote:
def countLetters(str, ch):
count=0
index=0
for ch in str:
if ch==str[index]:
count=count+1
index=index+1
print count
when I use this function, it measures the…