这不起作用:
<?php
header('Location: www.mysite.com/index.php?foo=bar&var=abc');
?>
我最终得到了www.mysite.com/index.php?foo=bar我认为HTML可能会试图将&var解释为一个字符.传递初始变量(在？之后),但后面的所有变量都不是(在&之后).
当我跑步时os.walk(),我得到的结果是字母数字顺序; 从0开始,以z结尾.有可能扭转这种局面吗？
如果我有3个目录; apple/,bananas/,pears/,我想pears/,bananas/和apples/返回.
显然我可以将所有目录存储为列表然后.reverse()但这需要很长时间.
document.write(parseInt("07"));
产生"7"
document.write(parseInt("08"));
产生"0"
这对我来说是个问题(抱歉这个唠叨,我必须或者我不能提交问题).任何人都知道为什么它是愚蠢的或者是否有更好的功能？
In [26]: test = {}
In [27]: test["apple"] = "green"
In [28]: test["banana"] = "yellow"
In [29]: test["orange"] = "orange"
In [32]: for fruit, colour in test:
....: print fruit
....:
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
/home1/users/joe.borg/<ipython-input-32-8930fa4ae2ac> in <module>()
----> 1 for fruit, colour in test:
2 print fruit
3
ValueError: too many values to unpack
我想要的是迭代测试并获得密钥和值.如果我只是做一个for item in test:我只得到钥匙.
最终目标的一个例子是:
for fruit, colour in test:
print "The fruit %s is the colour %s" % (fruit, …我正在尝试使用索引等构建一个小网站,并在/ api中创建一个我想要的api.
例如:
class Site(object):
@cherrypy.expose
def index(self):
return "Hello, World!"
@cherrypy.expose
def contact(self):
return "Email us at..."
@cherrypy.expose
def about(self):
return "We are..."
class Api(object):
@cherrypy.expose
def getSomething(self, something):
db.get(something)
@cherrypy.expose
def putSomething(self, something)
所以,我希望能够访问mysite.com/contact和mysite.com/Api/putSomething
如果我使用cherrypy.quickstart(Site()),我只会获得网站下的页面.
我认为有一种方法可以将类Api映射到/ Api下,但我找不到它.
natsort有没有办法改变索引？
即
$array = array('IMG0.png', 'img12.png', 'img10.png', 'img2.png', 'img1.png', 'IMG3.png');
natsort($array);
Array
(
[0] => IMG0.png
[4] => img1.png
[3] => img2.png
[5] => IMG3.png
[2] => img10.png
[1] => img12.png
)
但我想要:
$array = array('IMG0.png', 'img12.png', 'img10.png', 'img2.png', 'img1.png', 'IMG3.png');
natsort($array);
Array
(
[0] => IMG0.png
[1] => img1.png
[2] => img2.png
[3] => IMG3.png
[4] => img10.png
[5] => img12.png
)
例如,我想更改活动容器上的已发布端口
docker run -p 80:80 --name nginx_live nginx
然后,将其更改为另一个端口,例如 -p 8080:80
我正在尝试使用 div 布局页面。我很挣扎，因为 a 的参考点<div>似乎是左上角。这没问题，直到 div 改变形状。那么，左上角的位置就不合适了。
如果您看到http://jsfiddle.net/jdb1991/8Xb7L/，您将获得一个实例
#point { position: absolute; top: 50%; left: 50%; }
#square { border: solid black 1px; height: 100px; width: 100px; position: absolute; top: 50%; left: 50%; }
<div id="point">+</div>
<div id="square"></div>
有没有办法使用 CSS 将正方形的“参考点”更改为中心或不同的角？
我正在尝试从串行端口（Raspberry Pi 上的 GPS 设备）读取数据。
按照http://www.modmypi.com/blog/raspberry-pi-gps-hat-and-python的说明进行操作
我可以使用从 shell 读取
stty -F /dev/ttyAMA0 raw 9600 cs8 clocal -cstopb
cat /dev/ttyAMA0
我得到格式良好的输出
$GNGLL,5133.35213,N,00108.27278,W,160345.00,A,A*65
$GNRMC,160346.00,A,5153.35209,N,00108.27286,W,0.237,,290418,,,A*75
$GNVTG,,T,,M,0.237,N,0.439,K,A*35
$GNGGA,160346.00,5153.35209,N,00108.27286,W,1,12,0.67,81.5,M,46.9,M,,*6C
$GNGSA,A,3,29,25,31,20,26,23,21,16,05,27,,,1.11,0.67,0.89*10
$GNGSA,A,3,68,73,83,74,84,75,85,67,,,,,1.11,0.67,0.89*1D
$GPGSV,4,1,15,04,,,34,05,14,040,21,09,07,330,,16,45,298,34*40
$GPGSV,4,2,15,20,14,127,18,21,59,154,30,23,07,295,26,25,13,123,22*74
$GPGSV,4,3,15,26,76,281,40,27,15,255,20,29,40,068,19,31,34,199,33*7C
$GPGSV,4,4,15,33,29,198,,36,23,141,,49,30,172,*4C
$GLGSV,3,1,11,66,00,325,,67,13,011,20,68,09,062,16,73,12,156,21*60
$GLGSV,3,2,11,74,62,177,20,75,53,312,36,76,08,328,,83,17,046,25*69
$GLGSV,3,3,11,84,75,032,22,85,44,233,32,,,,35*62
$GNGLL,5153.35209,N,00108.27286,W,160346.00,A,A*6C
$GNRMC,160347.00,A,5153.35205,N,00108.27292,W,0.216,,290418,,,A*7E
$GNVTG,,T,,M,0.216,N,0.401,K,A*3D
$GNGGA,160347.00,5153.35205,N,00108.27292,W,1,12,0.67,81.7,M,46.9,M,,*66
$GNGSA,A,3,29,25,31,20,26,23,21,16,05,27,,,1.11,0.67,0.89*10
$GNGSA,A,3,68,73,83,74,84,75,85,67,,,,,1.11,0.67,0.89*1D
$GPGSV,4,1,15,04,,,34,05,14,040,21,09,07,330,,16,45,298,34*40
（我已经放入了一些随机数据）
我正在尝试在 Go 中阅读此内容。目前，我有
package main
import "fmt"
import "log"
import "github.com/tarm/serial"
func main() {
config := &serial.Config{
Name: "/dev/ttyAMA0",
Baud: 9600,
ReadTimeout: 1,
Size: 8,
}
stream, err := serial.OpenPort(config)
if err != nil {
log.Fatal(err)
} …为什么Rust的u64原始u32函数期望指数？
error[E0308]: mismatched types
--> src/protagonists.rs:13:25
|
13 | return root.pow(self.secret) % prime;
| ^^^^^^^^^^^ expected u32, found u64
help: you can convert an `u64` to `u32` and panic if the converted value wouldn't fit