大约有 3,900 项符合查询结果（耗时：0.0256秒） [XML]
Regular expression for letters, numbers and - _
... snippet to show how you can use this pattern:
<?php
$arr = array(
'screen123.css',
'screen-new-file.css',
'screen_new.js',
'screen new file.css'
);
foreach ($arr as $s) {
if (preg_match('/^[\w.-]*$/', $s)) {
print "$s is a match\n";
} else {
print "$s is NO match!!!\n";
...
How do I get the height and width of the Android Navigation Bar programmatically?
The black navigation bar on the bottom of the screen is not easily removable in Android. It has been part of Android since 3.0 as a replacement for hardware buttons. Here is a picture:
...
Can I avoid the native fullscreen video player with HTML5 on iPhone or android?
... an iPhone or a DroidX, the native video player pops up and takes over the screen, thus obscuring the other dynamic content that I want to display simultaneously with the video.
...
C# 能否获取一个对象所占内存的大小？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
}
int size = Marshal.SizeOf(new Student()); //1个字节
LayoutKind 默认值为Auto.
结论：
1：对于托管对象是没有办法直接获取到一个对象所占的内存大小。
2：非托管对象，可以使用Marshal.SizeOf
3：对内置类型，如int,long,byte等使用sizeof...
Detecting a mobile browser
...
Google TV is Android too. What define a mobile ? Screen Size ? Touch ? deviceOrientation ? When i design it's more a question of mousehover or not, big bouton or small links. So, for now, i run with "if (Modernizr.touch)" :)
– molokoloco
...
Bootstrap: how do I change the width of the container?
...iner sizes
// --------------------------------------------------
// Small screen / tablet
@container-tablet: ((720px + @grid-gutter-width));
// Medium screen / desktop
@container-desktop: ((940px + @grid-gutter-width));
// Large screen / wide desktop
@container-lg-desktop: ...
iPhone: Detecting user inactivity/idle time since last screen touch
Has anybody implemented a feature where if the user has not touched the screen for a certain time period, you take a certain action? I'm trying to figure out the best way to do that.
...
How to get screen dimensions as pixels in Android
... top edge and m pixels from the right edge). Therefore I need to get the screen width and screen height and then set position:
...
Why fragments, and when to use fragments instead of activities?
... is important information that I found on fragments:
Historically each screen in an Android app was implemented as a separate Activity. This creates a challenge in passing information between screens because the Android Intent mechanism does not allow passing a reference type (i.e. object) direc...
9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...es -F
(or iptables --flush)
2.设置chain策略
对于filter table，默认的chain策略为ACCEPT，我们可以通过以下命令修改chain的策略：
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP
以上命令配置将接收、转发和发出包均丢弃，...