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Create a File object in memory from a string in Java
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The File class represents the "idea" of a file, not an actual handle to use for I/O. This is why the File class has a .exists() method, to tell you if the file exists or not. (How can you have a File object that doesn't exist?)
By contrast, constructing...
Assigning default value while creating migration file
...eply. I thought it would be great if default migration generator would provide option to handle default values so that I do not have to edit the migration file after being generated in order to specify default value.
– kxhitiz
May 29 '11 at 14:42
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Return first match of Ruby regex
... answered Feb 6 '09 at 8:53
PresidentenPresidenten
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Are PostgreSQL column names case-sensitive?
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All identifiers (including column names) that are not double-quoted are folded to lower case in PostgreSQL. Column names that were created with double-quotes and thereby retained upper-case letters (and/or other syntax violations...
how to “reimport” module to python then code be changed after import
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Note that if you did from foo import * or from foo import bar, the symbol foo doesn't get defined. You need to import sys then reload(sys.modules['foo']) or perhaps reload(sys.modules[bar.__module__])
– drevicko
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Removing all non-numeric characters from string in Python
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@Ned Batchelder and @newacct provided the right answer, but ...
Just in case if you have comma(,) decimal(.) in your string:
import re
re.sub("[^\d\.]", "", "$1,999,888.77")
'1999888.77'
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jQuery callback on image load (even when the image is cached)
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#img is an ID not an element selector :) Also this.src works, no need to use jQuery where it isn't needed :) But creating another image seems like overkill in either case IMO.
– Nick Craver♦
Oct ...
python: how to send mail with TO, CC and BCC?
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Key thing is to add the recipients as a list of email ids in your sendmail call.
import smtplib
from email.mime.multipart import MIMEMultipart
me = "user63503@gmail.com"
to = "someone@gmail.com"
cc = "anotherperson@gmail.com,someone@yahoo.com"
bcc = "bccperson1@gmail.com,bccpe...
Specify format for input arguments argparse python
...ent and returns the converted value
You could do something like:
def valid_date(s):
try:
return datetime.strptime(s, "%Y-%m-%d")
except ValueError:
msg = "Not a valid date: '{0}'.".format(s)
raise argparse.ArgumentTypeError(msg)
Then use that as type:
parser.add...
How can I make Array.Contains case-insensitive on a string array?
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@bdukes That's too strong of a statement. There are valid reasons to use InvariantCulture. Use of any of the three choices above depends on the circumstance. I don't object to your reordering, but I'm removing the "probably not" comment. It's already made clear in the answer that...