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R programming: How do I get Euler's number?
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Please do not edit the question to change its terminology. The fact that 25000 people have visited this page without complaint until now suggests to me that many people read "Euler's constant" to mean e, and if you change the title,...
How do I declare class-level properties in Objective-C?
Maybe this is obvious, but I don't know how to declare class properties in Objective-C.
10 Answers
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In Python, how do you convert a `datetime` object to seconds?
...onds. Rather use (t - datetime.datetime.fromtimestamp(0)).total_seconds(). Do not use utcfromtimestamp(0) if you want to convert a datetime in your local timezone.
– Carl
Jul 9 '15 at 9:18
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Remove first element from $@ in bash [duplicate]
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Another variation uses array slicing:
for item in "${@:2}"
do
process "$item"
done
This might be useful if, for some reason, you wanted to leave the arguments in place since shift is destructive.
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Guid is all 0's (zeros)?
... that send objects with Guids back and forth. In my web app test code, I'm doing the following:
6 Answers
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Android - Handle “Enter” in an EditText
...re is a way to
manipulate the virtual keyboard in
such a way that the "Done" button is
labeled something else (for example
"Go") and performs a certain action
when clicked (again, like onSubmit).
Also yes.
You will want to look at the android:imeActionId and android:imeOptions attribute...
How do I set up a simple delegate to communicate between two view controllers?
...ildViewController *)viewController didChooseValue:(CGFloat)value {
// Do something with value...
// ...then dismiss the child view controller
[self.navigationController popViewControllerAnimated:YES];
}
@end
Hope this helps!
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How do you manually execute SQL commands in Ruby On Rails using NuoDB
... @connection.exec_query('select tablename from system.tables')
result.each do |row|
puts row
end
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improve this answer
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Union of dict objects in Python [duplicate]
How do you calculate the union of two dict objects in Python, where a (key, value) pair is present in the result iff key is in either dict (unless there are duplicates)?
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How do I use VaryByParam with multiple parameters?
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