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Understanding Python's “is” operator
...ariables point the same object, not if two variables have the same value.
From the documentation for the is operator:
The operators is and is not test for object identity: x is y is true if and only if x and y are the same object.
Use the == operator instead:
print(x == y)
This prints True...
Core dumped, but core file is not in the current directory?
...apport stop --- after I ran that, it changed /proc/sys/kernel/core_pattern from the apport pipe to just core. Apport is smart enough to fix up the core_pattern temporarily, I suppose.
– Patrick Collins
Feb 22 '16 at 18:50
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Android: How to change the ActionBar “Home” Icon to be something other than the app icon?
....com/guide/topics/manifest/…. It's not clear to me how this is different from the andorid:icon attribute, though: developer.android.com/guide/topics/manifest/…
– dbm
Sep 13 '13 at 10:21
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Test for multiple cases in a switch, like an OR (||)
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You need to make two case labels.
Control will fall through from the first label to the second, so they'll both execute the same code.
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How do I make a LinearLayout scrollable?
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@JoaoFilipeClementeMartins if you aren't going to benefit from the adapter functionality of the ListView, then you can simply add all the elements of your list in a LinearLayout wrapper to make it feel all streamlined in the scrollable box along with other elements.
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Breaking out of nested loops [duplicate]
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Use itertools.product!
from itertools import product
for x, y in product(range(10), range(10)):
#do whatever you want
break
Here's a link to itertools.product in the python documentation:
http://docs.python.org/library/itertools.html#ite...
How do I create directory if none exists using File class in Ruby?
...to(tokens.size - 1) do |n|
# Builds directory path one folder at a time from top to bottom
unless n == (tokens.size - 1)
new_dir << "#{tokens[n].to_s}/" # All folders except innermost folder
else
new_dir << "#{tokens[n].to_s}" # Innermost folder
end
# Creates director...
findViewByID returns null
...f all: yes, I read all the other threads on this topic. And not only those from this site... (you see, I'm a little frustrated)
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how to get request path with express req object
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To supplement, here is an example expanded from the documentation, which nicely wraps all you need to know about accessing the paths/URLs in all cases with express:
app.use('/admin', function (req, res, next) { // GET 'http://www.example.com/admin/new?a=b'
console....
How do I control how Emacs makes backup files?
...lly creates a backup of the original file the first time the file is saved from a buffer. If you're editing a new file Emacs will create a backup the second time you save the file.
No matter how many times you save the file the backup remains unchanged. If you kill the buffer and then visit the fi...