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Compare double to zero using epsilon
... certainly is not the same as someValue == 0. The whole idea of floating-point numbers is that they store an exponent and a significand. They therefore represent a value with a certain number of binary significant figures of precision (53 in the case of an IEEE double). The representable values are ...
Should an Enum start with a 0 or a 1?
...stic trade off I guess - disk space is cheap though, time spent constantly converting between enum values and an intwhen searching the db is relatively expensive (doubly so if you have a reporting tool setup against a database or something similar). If you're worried abotu space, with the newer SQL ...
Iterating through a range of dates in Python
...ingle_date in (start_date + timedelta(n) for n in range(day_count)):
print ...
And no list gets stored, only one generator is iterated over. Also the "if" in the generator seems to be unnecessary.
After all, a linear sequence should only require one iterator, not two.
Update after discussion wi...
What is Mocking?
...objects. This is useful if the real
objects are impractical to incorporate into the unit test.
In short, mocking is creating objects that simulate the behavior of
real objects.
At times you may want to distinguish between mocking as opposed to stubbing. There may be some disagreement about this sub...
Write to .txt file?
How can I write a little piece of text into a .txt file?
I've been Googling for over 3-4 hours, but can't find out how to do it.
...
How do you set the text in an NSTextField?
...ng to set happens to be an integer rather than a string, you don't need to convert the integer value to a string manually; you can just call:
myLabel.integerValue = i;
The integerValue property is defined on NSTextField's parent class, NSControl. See that linked documentation page for a full list...
Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
...iterator();
// Zipping looses DISTINCT and SORTED characteristics
int characteristics = aSpliterator.characteristics() & bSpliterator.characteristics() &
~(Spliterator.DISTINCT | Spliterator.SORTED);
long zipSize = ((characteristics & Spliterator.SIZED) != 0)
...
What is the Swift equivalent of respondsToSelector?
... func work() { }
func eat(food: AnyObject) { }
func sleep(hours: Int, minutes: Int) { }
}
let worker = Worker()
let canWork = worker.respondsToSelector(Selector("work")) // true
let canEat = worker.respondsToSelector(Selector("eat:")) // true
let canSleep = worker.respondsToSelector...
How to write LaTeX in IPython Notebook?
...:
from IPython.display import display, Math, Latex
display(Math(r'F(k) = \int_{-\infty}^{\infty} f(x) e^{2\pi i k} dx'))
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In Ruby how do I generate a long string of repeated text?
...ts. It certainly could (for example, automatically making a best-effort to convert the argument to a FixNum) but the language designers decided against embracing Ruby's Perlish inspirations too fully.
– FMc
Jan 15 '17 at 2:12
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