编程

type
  TVector = array of integer;
  TMatrix = array of array of integer;
 
procedure TForm1.Button1Click(Sender: TObject);
var
  A, B : TMatrix;
  C, D : TVector;
begin
  SetLength(C, 2);
  C[0] := 1;
  //this duplicates the vector
  D := Copy(C);
  D[0] := 2;
  //correctly shows "1"
  ShowMessage(IntToStr(C[0]));
  SetLength(A, 2, 2);
  A[0,0] := 1;
  //this should duplicate the matrix
  B := Copy(A);
  B[0,0] := 2;
  //oops: it shows "2"
  ShowMessage(IntToStr(A[0,0]));
end;

source =  args.encode("utf-8")
cmd = "java -jar -Djava.awt.headless=true \"%s\" -charset UTF-8  -pipe" % (self.plantuml_jar)
 
{{{
#!PlantUML
@startuml
skinparam defaultFontName simsun
软件 -> Bob: Authentication Request
Bo汉字b --> Alice: Authentication Response
Alice -> Bob: Another authentication Request
Alice <-- Bob: another authentication Response
@enduml
}}}

import time
import datetime
 
today = datetime.datetime.today()+ datetime.timedelta(days =10)
print today

import csv
def unicode_csv_reader(utf8_data, dialect=csv.excel, **kwargs):
    csv_reader = csv.reader(utf8_data, dialect=dialect, **kwargs)
    for row in csv_reader:
        yield [unicode(cell, 'utf-8') for cell in row]
 
spamReader =unicode_csv_reader(open('a.csv', 'rb'))
for row in spamReader:
    print ', '.join(row)

#http://code.activestate.com/recipes/577031-simple-permutations/
def perm(chars, m, wrd="", wrds=[]):
    if len(wrd) == m: return wrd
    for i in range(0, len(chars)):
        w = perm(chars, m, wrd+chars[i])
        if type(w) == type(""): wrds.append(w)
    return wrds

#http://code.activestate.com/recipes/190465/
def xcombinations(items, n):
    if n==0: yield []
    else:
        for i in xrange(len(items)):