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Python None comparison: should I use “is” or ==?
My editor warns me when I compare my_var == None , but no warning when I use my_var is None .
3 Answers
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Detect IE version (prior to v9) in JavaScript
I want to bounce users of our web site to an error page if they're using a version of Internet Explorer prior to v9. It's just not worth our time and money to support IE pre-v9 . Users of all other non-IE browsers are fine and shouldn't be bounced. Here's the proposed code:
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What is the difference between Serialization and Marshaling?
...don't understand how it differs from Serialization. Aren't they both transforming objects into series of bits?
12 Answers
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Difference between variable declaration syntaxes in Javascript (including global variables)?
...ually big ones.
There's a fourth way, and as of ES2015 (ES6) there's two more. I've added the fourth way at the end, but inserted the ES2015 ways after #1 (you'll see why), so we have:
var a = 0; // 1
let a = 0; // 1.1 (new with ES2015)
const a = 0; // 1.2 (new with ES2015)
a = 0; ...
How to configure port for a Spring Boot application
How do I configure the TCP/IP port listened on by a Spring Boot application, so it does not use the default port of 8080.
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How to validate IP address in Python? [duplicate]
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Don't parse it. Just ask.
import socket
try:
socket.inet_aton(addr)
# legal
except socket.error:
# Not legal
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How to read a text file into a string variable and strip newlines?
...licitly close the file, that will then be delayed until the garbage collector runs or the program terminates. The 'with' statement usually encapsulates some setup/teardown open/close actions.
– sleeplessnerd
Oct 18 '13 at 13:38
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What's the difference between .bashrc, .bash_profile, and .environment?
... of different *nix-based systems of the years, and it seems like every flavor of Bash I use has a different algorithm for deciding which startup scripts to run. For the purposes of tasks like setting up environment variables and aliases and printing startup messages (e.g. MOTDs), which startup scri...
How to check if DST (Daylight Saving Time) is in effect, and if so, the offset?
This is a bit of my JS code for which this is needed:
14 Answers
14
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Why is it considered a bad practice to omit curly braces? [closed]
...o use:
if(foo) bar();
Which takes care of the above case.
EDIT Thanks for clarifying the question, I agree, we should not write code to the lowest common denominator.
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