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Associativity of “in” in Python?
...z is not evaluated at all when x < y is found to be false).
What this means is, that there no associativity in x in y in z!
The following are equivalent:
1 in [] in 'a'
# <=>
middle = []
# False not evaluated
result = (1 in middle) and (middle in 'a')
(1 in []) ...
Android custom dropdown/popup menu
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Update: To create a popup menu in android with Kotlin refer my answer here.
To create a popup menu in android with Java:
Create a layout file activity_main.xml under res/layout directory which contains only one button.
Filename: activity_main.xml
<RelativeL...
What's the difference between globals(), locals(), and vars()?
...on's __dict__ to store local variables, since recursion and multithreading mean there can be multiple calls to a function at the same time, each with their own locals:
def f(outer):
if outer:
f(False)
print('Outer call locals:', locals())
print('f.__dict__:', f.__dict__)...
Stylecop vs FXcop
...'ve ever met someone who liked all of StyleCop's rules, but that's ok. It means that StyleCop is a generally good compromise amongst the vast set of style guidelines that exist. (If stylecop's rules were highly customizable, beyond simply enabling/disabling them, it would defeat the entire purpose ...
How to read contacts on Android 2.0
I'm working on Android 2.0 and am trying to receive a list of all contacts.
9 Answers
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How do I delete from multiple tables using INNER JOIN in SQL server
...e in this example. Something like:
begin transaction;
declare @deletedIds table ( id int );
delete from t1
output deleted.id into @deletedIds
from table1 as t1
inner join table2 as t2
on t2.id = t1.id
inner join table3 as t3
on t3.id = t2.id;
delete from t2
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What's “P=NP?”, and why is it such a famous question? [closed]
...r P=NP is perhaps the most famous in all of Computer Science. What does it mean? And why is it so interesting?
6 Answers
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What's the best way to trim std::string?
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It depends on the locale. My default locale (VS2005, en) means tabs, spaces, carriage returns, newlines, vertical tabs and form feeds are trimmed.
– MattyT
Jan 26 '09 at 13:11
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In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
...E, while :date and :time corresponds to DATE and TIME, respectively.
This means that within Rails, you only have to decide whether you need to store date, time or both.
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View/edit ID3 data for MP3 files
What's a quick and easy way to view and edit ID3 tags (artist, album, etc.) using C#?
6 Answers
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