ex) int -> string 형변환

string s = "test";

1) Convert.ToString(s.Length);

2) s.Length.ToString();


ex) string -> int 형변환

int i = 7;



[python] List method

STUDY/Python 2014. 1. 12. 23:09

    Add an item to the end of the list; equivalent to a[len(a):] = [x].


    Extend the list by appending all the items in the given list; equivalent to a[len(a):] = L.


list.insert(i, x)
    Insert an item at a given position. The first argument is the index of the element before which to insert, so a.insert(0, x) inserts at the     front of the list, and a.insert(len(a), x) is equivalent to a.append(x).


    Remove the first item from the list whose value is x. It is an error if there is no such item.


    Remove the item at the given position in the list, and return it. If no index is specified, a.pop() removes and returns the last item in     the list. (The square brackets around the i in the method signature denote that the parameter is optional, not that you should type     square brackets at that position. You will see this notation frequently in the Python Library Reference.)


    Return the index in the list of the first item whose value is x. It is an error if there is no such item.


    Return the number of times x appears in the list.


    Sort the items of the list, in place.



Reverse the elements of the list, in place.





>>> a = [66.25, 333, 333, 1, 1234.5]
>>> print a.count(333), a.count(66.25), a.count('x')

2 1 0
>>> a.insert(2, -1)
>>> a.append(333)
>>> a

[66.25, 333, -1, 333, 1, 1234.5, 333]
>>> a.index(333)
>>> a.remove(333)
>>> a
[66.25, -1, 333, 1, 1234.5, 333]
>>> a.reverse()
>>> a

[333, 1234.5, 1, 333, -1, 66.25]
>>> a.sort()
>>> a
[-1, 1, 66.25, 333, 333, 1234.5]


find로 파일 내용을 검색하고 싶으면 아래와 같이 하면 된다.
find /path -name "*.php" | xargs grep pattern

예를 들면 아래와 같이 하면 된다.
$ find ./ -name "*.php" | xargs grep "lang->cmd_modify = '수정'"
./common/lang/ko.lang.php:    $lang->cmd_modify = '수정';

$ find ./ -name "*.php" | xargs grep "수정"
./common/lang/ko.lang.php:    $lang->cmd_modify = '수정';

ko.lang.php 파일에 "수정"이라는 단어가 포함 되어 있다.