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Send POST data using XMLHttpRequest
I'd like to send some data using an XMLHttpRequest in JavaScript.
13 Answers
13
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Will Dispose() be called in a using statement with a null object?
...using statement on a (potentially) null object?
Consider the following example:
5 Answers
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CSS force image resize and keep aspect ratio
...
img {
display: block;
max-width:230px;
max-height:95px;
width: auto;
height: auto;
}
<p>This image is originally 400x400 pixels, but should get resized by the CSS:</p>
<img width="400" height="400" src="http://i.stack.imgu...
Batch files - number of command line arguments
...ing a bit gives you the following result from wikibooks:
set argC=0
for %%x in (%*) do Set /A argC+=1
echo %argC%
Seems like cmd.exe has evolved a bit from the old DOS days :)
share
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improve th...
Why '&&' and not '&'?
...eaning that the evaluation is canceled as soon as the result is clear.
Example:
if(CanExecute() && CanSave())
{
}
If CanExecute returns false, the complete expression will be false, regardless of the return value of CanSave. Because of this, CanSave is not executed.
This is very handy...
matplotlib colorbar for scatter
I'm working with data that has the data has 3 plotting parameters: x,y,c. How do you create a custom color value for a scatter plot?
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Why is string concatenation faster than array join?
...ng optimizations have changed the string concatenation picture.
Firefox was the first browser to optimize string concatenation. Beginning with version 1.0, the array technique is actually slower than using the plus operator in all cases. Other browsers have also optimized string concatenation, ...
CentOS 6.4下Squid代理服务器的安装与配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...理服务器的安装与配置一、简介代理服务器英文全称是Proxy Server，其功能就是代理网络用户去取得网络信息。Squid是一个缓存Internet 数据的软件，其接收用户的 一、简介
代理服务器英文全称是Proxy Server，其功能就是代理网络...
Commenting in a Bash script inside a multiline command
...`#Put your comment here` \
def `#Another chance for a comment` \
xyz, etc.
And for pipelines specifically, there is a clean solution with no overhead:
echo abc | # Normal comment OK here
tr a-z A-Z | # Another normal comment OK here
sort | # The pipelines are auto...
Are tar.gz and tgz the same thing?
... .tgz was used because files on Dos floppies could only have three letter extensions. When this limitation was removed .tar.gz was used to be more verbose by showing both the archive type (tar) and zipper (gzip).
They are identical.
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