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深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...模式执行。只要构建环境要素正确这样切换执行当然是没问题的。
这个执行环境要素需要注意的是：当使用 16-bit gate 时，也要相应使用 16-bit code segment descriptor。也就是在 gate descriptor 中的 selector 要使用 16-bit code segment selector。...
How to check whether an object is a date?
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In order to check if the value is a valid type of the standard JS-date object, you can make use of this predicate:
function isValidDate(date) {
return date && Object.prototype.toString.call(date) === "[object Date]" &...
jQuery event handlers always execute in order they were bound - any way around this? [duplicate]
It can be anoying that jQuery event handlers always execute in the order they were bound. For example:
10 Answers
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Inverse dictionary lookup in Python
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@BrianJack: Dictionaries are not ordered, like sets. Look at collections.OrderedDict for an implementation that is ordered.
– Martijn Pieters♦
Jul 24 '12 at 14:40
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.htaccess redirect all pages to new domain
...eRule ^/(.*)$ https://YOURDOMAIN.example/$1 [R=301,L]
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
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Send message to specific client with socket.io and node.js
... you need to send an event to a specific socket with a callback, then use @PHPthinking's answer and use io.sockets.connected[socketid].emit();. Tested with 1.4.6.
– tbutcaru
May 25 '16 at 14:48
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Cryptic “Script Error.” reported in Javascript in Chrome and Firefox
...nd see CORS examples for other web servers.)
If you're sending scripts in PHP:
header('Access-Control-Allow-Origin', 'http://myhomesite.example');
I've tested this and it works as expected. all errors from the script.js will be caught by the window.onerror handler with message, file and line de...
What is the difference between ndarray and array in numpy?
...an array using __new__:
If buffer is None, then only shape, dtype, and order are used.
If buffer is an object exposing the buffer interface, then all keywords are interpreted.
The example below gives a random array because we didn't assign buffer value:
np.ndarray(shape=(2,2), dtype=float...
Linux command or script counting duplicated lines in a text file?
...ve counts, i.e.:
sort filename | uniq -c
and to get that list in sorted order (by frequency) you can
sort filename | uniq -c | sort -nr
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How to find list intersection?
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If order is not important and you don't need to worry about duplicates then you can use set intersection:
>>> a = [1,2,3,4,5]
>>> b = [1,3,5,6]
>>> list(set(a) & set(b))
[1, 3, 5]
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