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Unicode and UTF-8 - 综合 - 清泛IT论坛,有思想、有深度
...英文存储空间会Double!
为了解决这些现实生活中遇到的问题,UTF-8编码应运而生!
言归正传,对于UTF-8:
UTF-8是针对Unicode(UCS-2或UCS-4)的可变长度编码方式,是一种前缀码,它可用来编码Unicode中的任何一个字符。UTF-8编码和ASCII...
图片轮播拓展 - ColinTreeSlideShow - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!
...一个空的 水平滚动布局,将宽高设置好
(目前组件有个问题,在加入图片之后调整这个布局,图片不会跟随改变大小)如图(背景颜色可以先设置好):
在添加列表项之前先初始化一下,调用传入一个参数:调用ColinTreeSlideSh...
HAXM 安装/启动失败? - App Inventor 2 离线版 - 清泛IT社区,为创新赋能!
... 使用 Hyper-V 加速 或 切换到 ARM 版本的模拟器。如果还有问题,可以查看 Android Studio 的 AVD Manager 里模拟器的 CPU 选项,确保选择了 x86 而不是 x86_64,或者使用 ARM 版本的系统镜像。
How do getters and setters work?
I'm from the php world. Could you explain what getters and setters are and could give you some examples?
6 Answers
...
What is the difference between statically typed and dynamically typed languages?
...cally-typed language with type inference).
Examples: Perl, Ruby, Python, PHP, JavaScript
Most scripting languages have this feature as there is no compiler to do static type-checking anyway, but you may find yourself searching for a bug that is due to the interpreter misinterpreting the type of a...
How to prevent a jQuery Ajax request from caching in Internet Explorer?
...ks var ajaxfile = base+"index.php/msc/popup_view/"+obj+"/"+id+"/"+no_tab; $.ajax({type: "GET",url: ajaxfile, //contentType: "application/json; charset=utf-8", cache: false, success: function(msg){ $("#popup").html(msg); } });
...
What are the most-used vim commands/keypresses?
... blank line; } next blank line
By file:
gg start of file; G end of file
123G go to specific line number
By marker:
mx set mark x; 'x go to mark x
'. go to position of last edit
' ' go back to last point before jump
Scrolling:
^F forward full screen; ^B backward full screen
^D down half scre...
Visually managing MongoDB documents and collections [closed]
...andoned projects
RockMongo – a MongoDB administration tool, written in PHP5. Allegedly the best in the PHP world. Similar to PHPMyAdmin. Last version: 2015-Sept-19
Fang of Mongo – a web-based UI built with Django and jQuery. Last commit: 2012-Jan-26, in a forked project.
Opricot – a browser-...
How to get past the login page with Wget?
...=foo&password=bar' \
--delete-after \
http://server.com/auth.php
# Now grab the page or pages we care about.
wget --load-cookies cookies.txt \
http://server.com/interesting/article.php
Make sure the --post-data parameter is properly percent-encoded (especially ampersands!) or t...
Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?
...l repro:
class Program
{
static bool M(out int x)
{
x = 123;
return true;
}
static int N(dynamic d)
{
int y;
if(d || M(out y))
y = 10;
return y;
}
}
I see no reason why that should be illegal; if you replace dynamic ...
