我有课程日期和时间.我正在使用公共构造函数创建一个类Onetime但我不确定如何创建新的日期和时间内联.
schedule[0]= new Onetime("see the dentist",
Date(2013, 11, 4),
Time(11, 30, 0),
Time(12, 30, 0));
class Onetime {
public:
Onetime( // what should I put here? )
}
我有一些输入字段彼此叠加,我希望能够检查用户是否使用了tab键或单击以关注当前输入字段.检查.live('click', function() {很容易但我不知道如何检查他们是否使用tab来关注当前输入字段.
这是我的WordPress表.我创建了一个数组,以便我可以尝试一下,但我需要添加类和ID,这样我就可以使用CSS来设置它,就像顶级插件页面一样.
如何向表元素添加类？
<?php
if(!class_exists('WP_List_Table')){
require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}
class TT_Example_List_Table extends WP_List_Table {
var $example_data = array(
array(
'ID' => 1,
'title' => '300',
'rating' => 'R',
'director' => 'Zach Snyder'
),
array(
'ID' => 2,
'title' => 'Eyes Wide Shut',
'rating' => 'R',
'director' => 'Stanley Kubrick'
),
array(
'ID' => 3,
'title' => 'Moulin Rouge!',
'rating' => 'PG-13',
'director' => 'Baz Luhrman'
),
array(
'ID' => 4,
'title' => 'Snow White',
'rating' => 'G',
'director' => …我有一张带有标题的专辑,它出现的年份和专辑中的歌曲.
我的数组设置如下:
std::string alb_name[256]['title', 'year', 'songs'];
但我希望歌曲关联数组最多能容纳20首歌曲.是否有捷径可寻？我正在编程1课程,我无法找到一种方法来做到这一点.任何帮助都是适当的.
mytable
+-----------+----------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-----------+----------+------+-----+---------+----------------+
| id | int(255) | NO | PRI | NULL | auto_increment |
| date | date | NO | | NULL | |
| answer_id | int(255) | NO | MUL | NULL | |
| count | int(255) | YES | | NULL | |
+-----------+----------+------+-----+---------+----------------+
SQL:
INSERT INTO mytable ('date', 'answer_id', 'count')
VALUES ('2013-12-05', '4', '1');
给我 ERROR 1064
#include<stdio.h>
#include<math.h>
int main(void){
double a=0,r=0,n=0;
printf("Enter Constant a:");
scanf("%lf",&a);
printf("Enter Constant r:");
scanf("%lf",&r);
printf("Enter Variable n:");
scanf("%lf",&n);
double an;
an = geom_rec(a,r,n); // Line 15
return 0;
}
double geom_rec(double a,double r,double n){ // Line 20
double ans=a;
return a;
}
错误:
Line 20: error: conflicting types for 'geom_rec'
Line 15: error: previous implicit declaration of 'geom_rec' was here
我有2个类,一个移动单位的机器人类和一个地图类来跟踪它们的位置.地图集中有一个地图集类和多个机器人类.我如何在类Robot中使用Atlas中的函数.
class Atlas:
def __init__(self):
self.robots = []
self.currently_occupied = {}
def add_robot(self, robot):
self.robots.append(robot)
self.currently_occupied = {robot:[]}
def all_occupied(self):
return self.currently_occupied
def occupy_spot(self, x, y, name):
self.currently_occupied[name] = [x, y]
class Robot():
def __init__(self, rbt):
self.xpos = 0
self.ypos = 0
atlas.add_robot(rbt) #<-- is there a better way than explicitly calling this atlas
self.name = rbt
def step(self, axis):
if axis in "xX":
self.xpos += 1
elif axis in "yY":
self.ypos += 1
atlas.occupy_spot(self.xpos, self.ypos, self.name)
def walk(self, axis, …do {
getline (myfile,temp);
if (temp[0] != "="){
MyAlbums[i].tracks.push_back(temp);
}
else {
break;
}
}while(true);
给我这个错误:
ISO C++禁止指针和整数之间的比较[-fpermissive]
我试图循环文本文件中的行和'push_pack'如果该行不以"="等于字符开头.否则我想摆脱循环.
任何帮助都非常适合!
int a = 2, b = 3, c = 5, d = 4, e = 1;
if ((a = b > c ? d : e) == e) a++;
答案是a = 2
我不明白这是在做什么.
你能帮我弄清楚这段代码是一步一步做的吗？