goog

联想A850这款机子挺漂亮的，，屏幕很大，就是有一点缺陷是屏幕的分辨率稍微有一点儿低，像素有一点儿低，哈哈，，还是很满意的啦！

goog

using namespace std;
#include <iostream>
#include <cstring>
#define NUM 26


class Node
{
public:
    int count;  // occurrence times 

goog

import numpy,timeit

def filter2d(image, filt):
    M, N = image.shape
    Mf, Nf = filt.shape
    Mf2 = Mf // 2
    Nf2 = Nf // 2
    result = numpy.zeros_like(image)
    for i in range(Mf2, M - Mf2):
        for j in range(Nf2, N - Nf2):

goog

import numpy as np
from numba import double
from numba.decorators import jit

@jit(argtypes=[double[:,:], double[:,:]])
def pairwise_numba(X, D):
    M = X.shape[0]
    N = X.shape[1]
    for i in range(M):
        for j in range(M):

goog

@autojit(locals=dict(array=double[:, :], scalar1=double))
def func(array):
    scalar1 = array[0, 0] # scalar is declared double
    scalar2 = double(array[0, 0])

goog

from numba import jit
import numpy as np


@jit('f8(f8[:])')
def sum1d(my_double_array):
    sum = 0.0
    for i in range(my_double_array.shape[0]):
        sum += my_double_array[i]
    return sum

goog

from numba import autojit
import numpy as np


@autojit
def sum1d(my_double_array):
    sum = 0.0
    for i in range(my_double_array.shape[0]):
        sum += my_double_array[i]
    return sum

goog

A closure occurs when a function has access to a local variable from an enclosing scope that has finished its execution.

def make_printer(msg): def printer(): print msg return printer

printer = make_printer('Foo!') printer()

goog

from numpy import zeros
from scipy import weave
import numpy as np
import time
import timeit
import scipy.weave as weave
import pyximport
pyximport.install(setup_args={'include_dirs':[np.get_include()]})

dx = 0.1

goog

In [328]: timeit.Timer('if done is None:pass','done = 1').timeit()
Out[328]: 0.09523200988769531

In [329]: timeit.Timer('if done!=None:pass','done = 1').timeit()
Out[329]: 0.2190079689025879