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How do I validate a date string format in python?
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>>> import datetime
>>> def validate(date_text):
try:
datetime.datetime.strptime(date_text, '%Y-%m-%d')
except ValueError:
raise ValueError("Incorrect data format, should be YYYY-MM-DD")
>>> valid...
Custom circle button
...r app:iconPadding="0dp" to ensure the icon is centered. I burnt a bunch of time trying center until I found this. It seems an oversight that app:iconGravity is missing a "center" value.
– scottyab
Apr 3 at 15:09
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Open firewall port on CentOS 7
....]. If the rules are not made permanent then they need to be applied every time after receiving the start, restart or reload message from firewalld using D-BUS."
– dKen
Mar 3 '15 at 10:25
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How to write inline if statement for print?
I need to print some stuff only when a boolean variable is set to True . So, after looking at this , I tried with a simple example:
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Classpath including JAR within a JAR
...an't be used commercially unless you have the internal political clout and time to get something purchased. I agree however that jars that barf on the current directory are a bad thing.
– Gus
May 16 '14 at 18:56
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How to resolve “Error: bad index – Fatal: index file corrupt” when using Git
After git init , I added and committed a few files, made some changes, added and committed. Set up the git daemon (running under Cygwin on WinXP) and cloned the repository once.
Now, I get this error with the cloned repository:
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How to use font-awesome icons from node-modules
...isclaimer: THERE ARE BETTER ANSWERS. PLEASE DO NOT USE THIS METHOD. At the time of this original answer, good tools weren't as prevalent. With current build tools such as webpack or browserify, it probably doesn't make sense to use this answer. I can delete it, but I think it's important to highligh...
How would you make a comma-separated string from a list of strings?
What would be your preferred way to concatenate strings from a sequence such that between every two consecutive pairs a comma is added. That is, how do you map, for instance, ['a', 'b', 'c'] to 'a,b,c' ? (The cases ['s'] and [] should be mapped to 's' and '' , respectively.)
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Adding a parameter to the URL with JavaScript
In a web application that makes use of AJAX calls, I need to submit a request but add a parameter to the end of the URL, for example:
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How to parse a query string into a NameValueCollection in .NET
I would like to parse a string such as p1=6&p2=7&p3=8 into a NameValueCollection .
19 Answers
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