我正在使用以下代码来获取所选文本,我的问题是,如何获取文本被选中的元素?我有100行和10列,我想得到td和tr对象,我想检查天气,在表格中选择了文本.
function getSelectedText() {
var t = '';
if(window.getSelection){
t = window.getSelection();
}else if(document.getSelection){
t = document.getSelection();
}else if(document.selection){
t = document.selection.createRange().text;
}
return t;
}
$(document).bind("mouseup", putSelectedToInput);
function putSelectedToInput(){
var st = getSelectedText();
if(st!=''){
$("#params_oldname").val($.trim(st));
}
}
Run Code Online (Sandbox Code Playgroud) 我创建了以下示例以了解python中的实例
import time;
class test:
mytime = time.time();
def __init__(self):
#self.mytime = time.time();
time.sleep(1);
pass
from test import test
test1 = test()
test2 = test()
print test1.mytime
print test2.mytime
test1.mytime = 12
print test1.mytime
print test2.mytime
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在这种情况下输出id如下:
1347876794.72
1347876794.72
12
1347876794.72
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我期望test2.mytime比test1.mytime大1秒.为什么不在每个实例中创建关于mytime的副本?
之前用win7从com口读取GPS数据。从现在开始,我想在 Ubuntu 下读取数据,但相同的代码不起作用。这是我的代码:
import serial, sys, time, threading
from datetime import datetime, timedelta
class MeasureModule():
def __init__(self, port, baudrate, sync_time=0, sync_nr=0):
self.port = port;
self.baudrate = baudrate;
def start(self):
try:
self.serial = serial.serial_for_url(self.port, self.baudrate, timeout=1)
except AttributeError:
self.serial = serial.Serial(self.port, self.baudrate, timeout=1)
start = time.clock()
while(time.clock()-start<11):
data = self.readline()
print(data)
self.stop();
def stop(self):
self.serial.close()
def readline(self, timeout=1, endline='\n'):
buff='';
try:
tic = time.clock()
ch = self.character(self.serial.read(1))
# you can use if not ('\n' in buff) too if you don't like …Run Code Online (Sandbox Code Playgroud) 我使用这个代码来生成JSON字符串,但面临着一个问题,我试图找出这是最后一个元素或没有,我用的这个if(end($aData) != $aD),但是这是比较值,有一个问题,当数组是相同的值,我如何比较$ keys(获取最后一个键并与当前键进行比较),或获取最后一个元素.
$ret = '[';
foreach($aDatas as $aData)
{
$ret .= "{";
foreach($aData as $key=>$aD)
{
$ret .= '"'.$key.'":"'.$aD.'"';
if(end($aData) != $aD)
$ret .= ',';
}
$ret .= "}";
if(end($aDatas) != $aData)
$ret .= ',';
}
echo $ret.']';
Run Code Online (Sandbox Code Playgroud) 我正在创建服务器 - 客户端通信,我想将一些信息存储在字典中,所以我创建了一个全局字典
global commandList
commandList = {}
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当客户端连接到服务器时,我试图以下列方式存储一些信息
self.clientname = str( self.client_address )
commandList[self.clientname]['lastcommand'] = GET_SETUP
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但我收到以下错误
commandList[self.clientname]['isready'] = False
KeyError: "('134.106.74.22', 49194)"
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更新:
这是代码的一部分.
class MCRequestHandler( SocketServer.BaseRequestHandler ):
global clientsLock, postbox, rxQueue, disconnect, isRunning, commandList
postbox = {}
rxQueue = Queue.Queue()
disconnect = {}
commandList = {}
clientsLock = threading.RLock()
isRunning = {}
def setup( self ):
clientsLock.acquire()
if len( postbox ) == 0:
self.clientname = 'MasterClient'
postbox['MasterClient'] = Queue.Queue()
mess = str( self.client_address );
postbox['MasterClient'].put( self.createMessage( MASTER_CLIENT_CONNECTED, …Run Code Online (Sandbox Code Playgroud) 我刚刚将trac从0.11更新为0.12,因为多存储库浏览.在svn同步自动工作之前,但是现在我必须进入管理面板并输入repository resync *命令,有没有办法自动执行此操作?
我有一个包含文件名和类名的字典如何导入这个类名,我该如何创建这个类?
例:
classNames = { 'MCTest':MCTestClass}
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我想导入MCTest并创建MCTestClass.
本周我开始将我的知识从C升级到C++,我想重载一些运算符
我有一个名为Matrix的课程
#include "lcomatrix.h"
inline Matrix::Matrix(unsigned rows, unsigned cols) :
rows_(rows), cols_(cols)
{
data_ = new double[rows * cols];
}
inline Matrix::~Matrix() {
delete[] data_;
}
inline double& Matrix::operator()(unsigned row, unsigned col) {
return data_[cols_ * row + col];
}
inline double Matrix::operator()(unsigned row, unsigned col) const {
return data_[cols_ * row + col];
}
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内容lcomatrix.h是
#include <iostream>
class Matrix {
public:
Matrix(unsigned rows, unsigned cols);
double& operator()(unsigned row, unsigned col);
double operator()(unsigned row, unsigned col) const;
~Matrix(); …Run Code Online (Sandbox Code Playgroud) 我有以下代码,这是一个命令行测试
from cmd2 import Cmd
class App(Cmd, object):
def __init__(self, *args, **kwargs):
pass
def do_test(self, line):
'test'
print "parent test"
class App2():
def __init__(self, *args, **kwargs):
pass
def do_test2(self, line):
print "Test2"
app = App()
app.cmdloop()
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是否有可能使用额外的功能扩展App类?我知道有以下解决方案
class App2(App):
....
app = App2()
app.cmdloop()
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但在我的情况下,我想只运行App并扩展它,如果可能的话.
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