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How to overcome TypeError: unhashable type: 'list'
...used to compare dictionary keys during a dictionary lookup quickly.
Internally, hash() method calls __hash__() method of an object which are set by default for any object.
Converting a nested list to a set
>>> a = [1,2,3,4,[5,6,7],8,9]
>>> set(a)
Traceback (most recent call last...
Bash syntax error: unexpected end of file
...nnocent-looking snippet will cause the same error:
die () { test -n "$@" && echo "$@"; exit 1 }
To make the dumb parser happy:
die () { test -n "$@" && echo "$@"; exit 1; }
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Truncate all tables in a MySQL database in one command?
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Use phpMyAdmin in this way:
Database View => Check All (tables) => Empty
If you want to ignore foreign key checks, you can uncheck the box that says:
[ ] Enable foreign key checks
You'll need to be running atle...
Strip HTML from strings in Python
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Note that this strips HTML entities (e.g. &) as well as tags.
– Søren Løvborg
Oct 15 '11 at 13:00
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How can I use threading in Python?
...ticle/blog post that you should definitely check out (no affiliation) - Parallelism in one line: A Better Model for Day to Day Threading Tasks. I'll summarize below - it ends up being just a few lines of code:
from multiprocessing.dummy import Pool as ThreadPool
pool = ThreadPool(4)
results = pool.m...
How to get the first item from an associative PHP array?
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More information on the reset function: www.w3schools.com/php/func_array_reset.asp
– Paul Chris Jones
Dec 17 '19 at 12:38
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Random / noise functions for GLSL
... using whatever PRNG you like, then upload this in the normal fashion and sample the values in your shader; I can dig up a code sample later if you'd like.
Also, check out this file for GLSL implementations of Perlin and Simplex noise, by Stefan Gustavson.
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PHP CURL CURLOPT_SSL_VERIFYPEER ignored
...cation pretty much removes all security of SSL anyway. You should fix your PHP configuration instead.
– Scopey
Aug 21 '17 at 22:31
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jQuery AJAX submit form
...Query serialize function.
AjaxForm:
$("#theForm").ajaxForm({url: 'server.php', type: 'post'})
or
$("#theForm").ajaxSubmit({url: 'server.php', type: 'post'})
ajaxForm will send when the submit button is pressed. ajaxSubmit sends immediately.
Serialize:
$.get('server.php?' + $('#theForm').ser...
10 条真心有趣的 Linux 命令 - 创意 - 清泛网 - 专注C/C++及内核技术
...词，rev命令会将你写的东西反转输出到控制台。
# rev <file name>
2.fortune
这个命令没有被默认安装，用apt-get命令安装它，fortune命令会随机显示一些句子
crank@crank-System:~$ sudo apt-get install fortune
利用fortune命令的_s选项，他...