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Is 1.0 a valid output from std::generate_canonical?
I always thought random numbers would lie between zero and one, without 1 , i.e. they are numbers from the half-open interval [0,1). The documention on cppreference.com of std::generate_canonical confirms this.
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Create a matrix of scatterplots (pairs() equivalent) in ggplot2
... be a factor. I haven't checked it, but there's no reason why it should be one. However I get a scatter plot :)
Note: For future reference, the plotmatrix() function has been replaced by the ggpairs() function from the GGally package as @naught101 suggests in another response below to this questi...
How to search by key=>value in a multidimensional array in PHP
... This is a good solution if you want to search an array that is only one level deep, but this particular question was about searching recursively into a deep array ("the function has to be recursive to get down to the deepest level").
– orrd
Jun 18 '15 at...
How do I bind Twitter Bootstrap tooltips to dynamically created elements?
...
Try this one:
$('body').tooltip({
selector: '[rel=tooltip]'
});
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Why are only final variables accessible in anonymous class?
...ype... anything like that. Basically it's a bit like communicating between one method and another: changes made to the parameters of one method aren't seen by its caller, but changes made to the objects referred to by the parameters are seen.
If you're interested in a more detailed comparison betwe...
How do I create a new class in IntelliJ without using the mouse?
...ted via Alt+1.
To create a new class in the same directory as the current one use Ctrl+Alt+Insert (New...).
You can also do it from the Navigation Bar, press Alt+Home, then choose package with arrow keys, then press Alt+Insert.
Another useful shortcut is View | Select In (Alt+F1), Project (1), th...
Moment JS - check if a date is today or in the future
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Since no one seems to have mentioned it yet, the simplest way to check if a Moment date object is in the past:
momentObj.isBefore()
Or in the future:
momentObj.isAfter()
Just leave the args blank -- that'll default to now.
Ther...
Why am I getting a NoClassDefFoundError in Java?
... @DaveL. Thanks! Jared's answer with 400+ upvotes is way below! One answer with -4 up(down?)votes is way above it. There is something fishy about SO's answer ordering logic.
– Saurabh Patil
Jul 31 '17 at 14:00
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Python - Create a list with initial capacity
...essage)
return result
def doAllocate( size=10000 ):
result=size*[None]
for i in range(size):
message= "some unique object %d" % ( i, )
result[i]= message
return result
Results. (evaluate each function 144 times and average the duration)
simple append 0.0102
pre-al...
What's wrong with nullable columns in composite primary keys?
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Primary keys are for uniquely identifying rows. This is done by comparing all parts of a key to the input.
Per definition, NULL cannot be part of a successful comparison. Even a comparison to itself (NULL = NULL) will fail. This means a key containing NULL would not work.
Addito...