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What does enctype='multipart/form-data' mean?
...ion/json, but that has been abandoned.
(Other encodings are possible with HTTP requests generated using other means than an HTML form submission. JSON is a common format for use with web services and some still use SOAP.)
The specifics of the formats don't matter to most developers. The important ...
How to build & install GLFW 3 and use it in a Linux project
... version available in the first line):
version="3.2.1" && \
wget "https://github.com/glfw/glfw/releases/download/${version}/glfw-${version}.zip" && \
unzip glfw-${version}.zip && \
cd glfw-${version} && \
sudo apt-get install cmake xorg-dev libglu1-mesa-dev &&...
Insert auto increment primary key to existing table
... mechanics are quite different. You'll find suggestions here stackoverflow.com/questions/946011/sqlite-add-primary-key
– Michael Berkowski
Sep 3 '15 at 13:12
1
...
MongoDB aggregation framework match OR
...e of the same field, use the $in operator instead
of the $or operator.
https://docs.mongodb.com/manual/reference/operator/query/or/#or-versus-in
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How do I test for an empty JavaScript object?
...
community wiki
14 revs, 14 users 53%Adam Zerner
...
How do I position one image on top of another in HTML?
...green solid;
}
<div class="parent">
<img class="image1" src="https://placehold.it/50" />
<img class="image2" src="https://placehold.it/100" />
</div>
As the simplest solution. That is:
Create a relative div that is placed in the flow of the page; place the b...
When should iteritems() be used instead of items()?
... more like a set (which you'd expect from a dict).
Simple example:
common_keys = list(dict_a.viewkeys() & dict_b.viewkeys())
Will give you a list of the common keys, but again, in Python 3.x - just use .keys() instead.
Python 3.x has generally been made to be more "lazy" - i.e. map is now e...
How can I convert an RGB image into grayscale in Python?
...a luma value, but it means you can do it all in matplotlib.
Background:
http://matplotlib.sourceforge.net/api/colors_api.html
http://en.wikipedia.org/wiki/HSL_and_HSV
Alternatively, you could use PIL or the builtin colorsys.rgb_to_yiq() to convert to a colorspace with a true luma value. You co...
Repeat string to certain length
...
def repeat_to_length(string_to_expand, length):
return (string_to_expand * ((length/len(string_to_expand))+1))[:length]
For python3:
def repeat_to_length(string_to_expand, length):
return (string_to_expand * (int(length/len(s...
Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Http长连接200万尝试及调优对于一个server，我们一般考虑他所能支撑的qps，但有那么一种应用， 我们需要关注的是它能支撑的连接数个数，而并非qps，当然qps也是我们...对于一个server，我们一般考虑他所能支撑的qps，但有那么一...