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Bookmark or Share- What does this regular expression mean /^[a-z]{1}[a-z0-9_]{3,13}$/Assert position at the beginning of the string «^» Match a single character in the range between “a” and “z” «[a-z]{1}» Exactly 1 times «{1}» Match a single character present in the list below «[a-z0-9_]{3,13}» Between 3 and 13 times, as many times as possible, giving back as needed (greedy) «{3,13}» A character in the range between “a” and “z” «a-z» A character in ...
- Difference between regex [A-z] and [a-zA-Z] - Stack OverflowI am using a regex to program an input validator for a text box where I only want alphabetical characters. I was wondering if [A-z] and [a-zA-Z] were equivalent or if there were differences perform...
- python - How do I install pip on Windows? - Stack Overflow@nicolas Yeah, easyinstall is just an outdated interface to setuptools. Pip is awesome, and virtualenv offers the kind of control that you don't get in many other languages without WAY more hackish tactics; perl being the only comparable exception.
- How do the post increment (i++) and pre increment (++i) operators work ...Can you explain to me the output of this Java code? int a=5,i; i=++a + ++a + a++; i=a++ + ++a + ++a; a=++a + ++a + a++; System.out.println(a); System.out.println(i ...
- c++ - .c vs .cc vs. .cpp vs .hpp vs .h vs .cxx - Stack OverflowPossible Duplicates: *.h or *.hpp for your class definitions What is the difference between .cc and .cpp file suffix? I used to think that it used to be that: .h files are header files for C and ...
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