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Iterate a list as pair (current, next) in Python
...a, b = itertools.tee(iterable)
next(b, None)
return zip(a, b)
For Python 2, you need itertools.izip instead of zip:
import itertools
def pairwise(iterable):
"s -> (s0,s1), (s1,s2), (s2, s3), ..."
a, b = itertools.tee(iterable)
next(b, None)
return itertools.izip(a, b...
Encode String to UTF-8
... @Peter: true. But attaching an encoding to it only makes sense for byte[], it doesn't make sense for String (unless the encoding is UTF-16, in which case it makes sense but it still unnecessary information).
– Joachim Sauer
Apr 20 '11 at 14:36
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Apache not starting on MAMP Pro
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Thank you! Worked! For others, clear solution: cd /Applications/MAMP/Library/bin && sudo mv envvars _envvars
– Rozkalns
Aug 20 '14 at 20:03
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Is it possible to use “/” in a filename?
...n't, unless your filesystem has a bug. Here's why:
There is a system call for renaming your file defined in fs/namei.c called renameat:
SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname,
int, newdfd, const char __user *, newname)
When the system call gets invoke...
Weird PHP error: 'Can't use function return value in write context'
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I also found the solution for the issue I was facing, so FYI - this goes also for $_REQUEST (parameters in the URL of the page).
– TheCuBeMan
Dec 31 '15 at 9:37
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python list in sql query as parameter
...been templating the values into a plain SQL string. That's absolutely fine for integers, but if we wanted to do it for strings we get the escaping issue.
Here's a variant using a parameterised query that would work for both:
placeholder= '?' # For SQLite. See DBAPI paramstyle.
placeholders= ', '.j...
Two submit buttons in one form
I have two submit buttons in a form. How do I determine which one was hit serverside?
19 Answers
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Android: View.setID(int id) programmatically - how to avoid ID conflicts?
I'm adding TextViews programmatically in a for-loop and add them to an ArrayList.
14 Answers
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Why 0 is true but false is 1 in the shell?
... need to know. If it fails, however, you might need to know all kinds of information about the failure - why it happened, how to fix it, etc. Having zero mean 'success' and non-zero mean failure lets you can check pretty easily for success, and investigate the particular error for more details if y...
Disable a Button
...e a button ( UIButton ) on iOS after it is clicked. I am new to developing for iOS but I think the equivalent code on objective - C is this:
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