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How do I Sort a Multidimensional Array in PHP [duplicate]
...C ? -1 : 1;
// If a projection was defined project the values now
if ($projection) {
$lhs = call_user_func($projection, $first[$column]);
$rhs = call_user_func($projection, $second[$column]);
}
else {
$l...
python: How do I know what type of exception occurred?
...y, it's so that you don't hide:
the fact that an error occurred
the specifics of the error that occurred (error hiding antipattern)
So as long as you take care to do none of those things, it's OK to catch the generic exception. For instance, you could provide information about the exception to ...
Click Event on UIImageView programmatically in ios
...
Now in Swift!
let singleTap = UITapGestureRecognizer(target: self, action: Selector("tapDetected"))
singleTap.numberOfTapsRequired = 1
preArrowImage.userInteractionEnabled = true
preArrowImage.addGestureRecognizer(singleTap...
List comprehension vs map
... {x:x**2 for x in rangeNeg5}
)
Efficiency comparison for python3
map is now lazy:
% python3 -mtimeit -s 'xs=range(1000)' 'f=lambda x:x' 'z=map(f,xs)'
1000000 loops, best of 3: 0.336 usec per loop ^^^^^^^^^
Therefore if you will not be using all your data, or do not know ahead of tim...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
...
Programming Perl - chapter 31 part 13, ch 7.2.41
How does a Perl program know where to find the file containing Perl module it uses?
There does not seem to be a comprehensive @INC FAQ-type post on Stack Overflow, so this question is intended as one.
When to use each approach?
If the modules in...
How can I use a local image as the base image with a dockerfile?
...
I don't know any more, I'm also now on 1.5
– Anentropic
Apr 21 '15 at 12:37
1
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What is the purpose of python's inner classes?
...es confuse me. Is there something that can't be accomplished without them? If so, what is that thing?
9 Answers
...
Define a lambda expression that raises an Exception
...ef raise_(ex):
raise ex
y = lambda: raise_(Exception('foobar'))
But if your goal is to avoid a def, this obviously doesn't cut it. It does, however allow you to conditionally raise exceptions, e.g.:
y = lambda x: 2*x if x < 10 else raise_(Exception('foobar'))
Alternatively you can rai...
Difference between len() and .__len__()?
Is there any difference between calling len([1,2,3]) or [1,2,3].__len__() ?
4 Answers
...
jQuery using append with effects
...s wrong though and you're right, you can chain them. I've edited my answer now.
– Mark Bell
Oct 5 '09 at 14:15
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