The g in the regular expression (short for global) says to search the whole string rather than just find the first occurrence. This matches is twice: Expand snippet And, if there are no matches, it returns 0:
As it currently stands, you are trying to concatenate a string with a list in your final print statement, which will throw TypeError. Instead, alter your last print statement to one of the following:
I need a function from the standard library that replaces all occurrences of a character in a string by another character. I also need a function from the standard library that replaces all occurrences of a substring in a string by another string. I need a function from the standard library that replaces all occurrences … Read more
This will work if the input contains only one type of line breaks – either CR, or LF, or CR+LF.
Primitive types do not have methods, as they are not objects in Java. You should use the matching class:
The code: The output of java Test abcdef:
to_sym converts a string to a symbol. For example, “a”.to_sym becomes :a. It’s not specific to Rails; vanilla Ruby has it as well. It looks like in some versions of Ruby, a symbol could be converted to and from a Fixnum as well. But irb from Ruby 1.9.2-p0, from ruby-lang.org, doesn’t allow that unless you add your own to_sym method to Fixnum. I’m … Read more
Do it like this: Note: strtok modifies the string its tokenising, so it cannot be a const char*.
Strings are hard work in C. The 12 is enough bytes to store the text “pre_”, the text “_suff”, a string of up to two characters (“99”) and the NULL terminator that goes on the end of C string buffers. This will tell you how to use snprintf, but I suggest a good C book!
Here’s an alternative that doesn’t require regex: