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从Sloodle看三维虚拟学习环境的发展趋势 - 资讯 - 清泛网 - 专注C/C++及内核技术
...包含的大量管理和支持工具 ,比如课程列表、权限管理、测试、论坛等。Livingstone和 Kemp (2008)曾做过一个调查 ,在调查样本中大约有 86%的用户表示整合学习管理系统与Second Life是有必要的。
在学习管理系统方面 ,现有的平台很...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...文件之前执行。所以它可以在没有任何输入的情况下进行测试。它通常用来改变内建变量的值，如OFS,RS和FS等，以及打印标题。如：$ awk 'BEGIN{FS=":"; OFS="\t"; ORS="\n\n"}{print $1,$2,$3} test。上式表示，在处理输入文件以前，域分隔符(FS)...
Exploitable PHP functions
...nk
mkdir
move_uploaded_file
rename
rmdir
symlink
tempnam
touch
unlink
imagepng - 2nd parameter is a path.
imagewbmp - 2nd parameter is a path.
image2wbmp - 2nd parameter is a path.
imagejpeg - 2nd parameter is a path.
imagexbm - 2nd parameter is a path.
imagegif - 2nd parameter is a path.
...
What methods of ‘clearfix’ can I use?
...">
<img
style="float: right;"
src="path/to/floated-element.png"
width="500"
height="500"
>
<p>Your content here…</p>
</div>
One downside, using certain combinations of margin and padding on the external element can cause scrollbars to appear but ...
How to put the legend out of the plot
...f needed, the figure size is automatically adjusted.
plt.savefig("output.png", bbox_inches="tight")
automatically adjusting the subplot params
A way to automatically adjust the subplot position such that the legend fits inside the canvas without changing the figure size can be found in this answ...
How can the Euclidean distance be calculated with NumPy?
...= numpy.array([a.T, b.T])
return out0, out1
perfplot.save(
"norm.png",
setup=setup,
n_range=[2 ** k for k in range(22)],
kernels=[
linalg_norm,
linalg_norm_T,
scipy_distance,
sqrt_sum,
sqrt_sum_T,
sqrt_einsum,
sqrt_einsum_...
Rails 4 multiple image or file upload using carrierwave
...pictures, multiple: true, accept: "image/jpeg, image/jpg, image/gif, image/png" %>
<%= f.submit "Submit" %>
<% end %>
In your views, you can reference the images parsing the pictures array:
@product.pictures[1].url
If you choose several images from a folder, the order will be ...
Difference between Grunt, NPM and Bower ( package.json vs bower.json )
...ng
Bower, unlike npm, can have multiple files (e.g. .js, .css, .html, .png, .ttf) which are considered the main file(s). Bower semantically considers these main files, when packaged together, a component.
Edit: Grunt is quite different from Npm and Bower. Grunt is a javascript task runner tool...
How to handle many-to-many relationships in a RESTful API?
...api/Teams/1:
{
id: 1
name: 'Vasco da Gama',
logo: '/img/Vascao.png',
}
/api/Players/10:
{
id: 10,
name: 'Roberto Dinamite',
birth: '1954-04-13T00:00:00Z',
}
/api/TeamsPlayers/100
{
id: 100,
playerId: 10,
teamId: 1,
contractStartDate: '1971-11-25T00:00:00Z',
...
How do I give text or an image a transparent background using CSS?
...
Either use a semi-transparent PNG image or use CSS 3:
background-color: rgba(255, 0, 0, 0.5);
Here's an article from css3.info, Opacity, RGBA and compromise (2007-06-03).
<p style="background-color: rgba(255, 0, 0, 0.5);">
<span>...