Seven basic functions Bibei
join the set intermediate target character string is inserted into each character
split all the established character string corresponding to the target segmentation, the default from the left, can specify the number of divisions (corresponding to the delimiter is not returned after division)
Looking find the specified string from front to back at a predetermined interval to open the right, the output can not find -1. Returns the absolute value of the bit
strip around the string started simultaneously provided to remove intermediate
upper converted to uppercase
lower converted to lowercase
The string replace old (old string) replaced with new (new string), if the third argument max, max is not more than the replacement times
Magical four functions
obtaining test position return str (test on behalf of that string is not in front of the function name)
test [3] index position
test [0: 1] index range (0, <= x <1)
test [0: -1] index range ( "-1" directly to the end)
Find string len number of characters
for in a string variable name (which is equivalent to the cycle while incremental step 1)
range (100,, 2) create consecutive numbers from 0 to 100 in steps of 2