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How to validate IP address in Python? [duplicate]
...t. Just ask.
import socket
try:
socket.inet_aton(addr)
# legal
except socket.error:
# Not legal
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Class type check in TypeScript
...ich is new for ActionScript 3.0, allows you to test whether a variable or expression is a member of a given data type. In previous versions of ActionScript, the instanceof operator provided this functionality, but in ActionScript 3.0 the instanceof operator should not be used to test for data type m...
How to find the width of a div using vanilla JavaScript?
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This answer has a detailed visual explanation of the difference between offsetWidth and clientWidth.
– Tony O'Hagan
Mar 5 '18 at 0:58
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What are file descriptors, explained in simple terms?
...file descriptors, if you open lots of files at once. Which will prevent *nix systems from running, since they open descriptors to stuff in /proc all the time.
– Spencer Rathbun
May 10 '12 at 12:51
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Mongo interface [closed]
...n if you your MongoDB isn't on MongoHQ.)
https://mongohq.com/home
Mac OS X
While MongoHub had been a decent option for a while it's bugs make it virtually unusable at this point ...
There is a more up-to-date (and less buggy) fork of the MongoHub project available: https://github.com/fotonauts/...
How to make a transparent UIWebView
...ding detail view for each row. In the detail view I have to display some text and a background image (text is different for each row, but the image remains the same). The easiest way, in my opinion, is to put the text in an .rtf file and display it in a UIWebView . Then just put a UIImageView beh...
raw vs. html_safe vs. h to unescape html
...is to "revert" an html_safe declaration, pretty unusual.
Prepending your expression with raw is actually equivalent to calling to_s chained with html_safe on it, but is declared on a helper, just like h, so it can only be used on controllers and views.
"SafeBuffers and Rails 3.0" is a nice explana...
Vagrant reverse port forwarding?
...ing vagrant ssh -- -R 12345:localhost:80 This follows the ssh option syntax -R [bind_address:]port:host:hostport, where the first number is the port number to listen on inside the guest machine, and the last two are the service address as visible from the host machine.
– Eero
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Object.getOwnPropertyNames vs Object.keys
... Object.getOwnPropertyNames and Object.keys in javascript? Also some examples would be appreciated.
5 Answers
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Matplotlib: “Unknown projection '3d'” error
I just installed matplotlib and am trying to run one of there example scripts. However I run into the error detailed below. What am I doing wrong?
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