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Android Spinner: Get the selected item change event
... answered Nov 11 '09 at 10:50
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Meaning of $? (dollar question mark) in shell scripts
...ure.
Hence when scripting; I tend to use the following syntax
if [ $? -eq 0 ]; then
# do something
else
# do something else
fi
The comparison is to be done on equals to 0 or not equals 0.
** Update Based on the comment: Ideally, you should not use the above code block for comparison, refer t...
Does “git fetch --tags” include “git fetch”?
... the new behavior (see Documentation/fetch-options.txt).
Request that all tags be fetched from the remote in addition to whatever else is being fetched.
Since Git 2.5 (Q2 2015) git pull --tags is more robust:
See commit 19d122b by Paul Tan (pyokagan), 13 May 2015.
(Merged by Junio C Hamano...
Hash and salt passwords in C#
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Actually this is kind of strange, with the string conversions - which the membership provider does to put them into config files. Hashes and salts are binary blobs, you don't need to convert them to strings unless you want to put...
Difference between no-cache and must-revalidate
...ably preferred by the user (better to have something stale than nothing at all). This is why must-revalidate is intended for critical transactions only.
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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...of PostgreSQL
In old versions of PostgreSQL (prior to 8.x?) you had to do all the dirty work. The following sequence of commands should do the trick:
ALTER TABLE test1 ADD COLUMN id INTEGER;
CREATE SEQUENCE test_id_seq OWNED BY test1.id;
ALTER TABLE test ALTER COLUMN id SET DEFAULT nextval('...
Android phone orientation overview including compass
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Roll is a function of gravity, a 90 degree roll puts all of gravity into the x register.
Pitch is the same, a 90 degree pitch up puts all of the component of gravity into the y register.
Yaw / Heading / azimuth has no effect on gravity, it is ALWAYS at right angles to gravity...
How do I get a background location update every n minutes in my iOS application?
...d with UIApplication:beginBackgroundTaskWithExpirationHandler:
When n is smaller than UIApplication:backgroundTimeRemaining it will work just fine. When n is larger, the location manager should be enabled (and disabled) again before there is no time remaining to avoid the background task being kille...
Proper indentation for Python multiline strings
... and long if statements, though not mentioned for multiline strings. Personally this is one place I refuse to follow PEP8 (and use 4-space indenting instead), as I strongly dislike hanging indents, which for me obscure the proper structure of the program.
– bobince
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Is there a python equivalent of Ruby's 'rvm'?
Q: Do we have anything functionally equivalent in Python to the Ruby version manager 'rvm' ?
6 Answers
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