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std::unique_ptr with an incomplete type won't compile
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Here are some examples of std::unique_ptr with incomplete types. The problem lies in destruction.
If you use pimpl with unique_ptr, you need to declare a destructor:
class foo
{
class impl;
std::unique_ptr<impl> impl_;
pub...
How does numpy.histogram() work?
...range that represents the width of a single bar of the histogram along the X-axis. You could also call this the interval. (Wikipedia defines them more formally as "disjoint categories".)
The Numpy histogram function doesn't draw the histogram, but it computes the occurrences of input data that fall...
When to use %r instead of %s in Python? [duplicate]
On Learn Python the Hard Way page 21, I see this code example:
4 Answers
4
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How can I visualize per-character differences in a unified diff file?
...s named foo.diff or foo.patch this happens automatically; otherwise type M-x diff-mode RET), go to the hunk you are interested in and hit C-c C-b for refine-hunk. Or step through the file one hunk at a time with M-n; that will do the refining automatically.
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What is meant by 'first class object'?
... are 'first class' objects. What does the 'first class' mean in this context, as opposed to other objects?
11 Answers
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Node.js: How to send headers with form data using request module?
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'Content-Length': contentLength,
'Content-Type': 'application/x-www-form-urlencoded'
},
uri: 'http://myUrl',
body: formData,
method: 'POST'
}, function (err, res, body) {
//it works!
});
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How do I use a PriorityQueue?
...which compares in the appropriate way for your sort order. If you give an example of how you want to sort, we can provide some sample code to implement the comparator if you're not sure. (It's pretty straightforward though.)
As has been said elsewhere: offer and add are just different interface meth...
How to find all occurrences of an element in a list?
index() will just give the first occurrence of an item in a list. Is there a neat trick which returns all indices in a list for an element?
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sed one-liner to convert all uppercase to lowercase?
I have a textfile in which some words are printed in ALL CAPS. I want to be able to just convert everything in the textfile to lowercase, using sed . That means that the first sentence would then read, 'i have a textfile in which some words are printed in all caps.'
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Programmatically obtain the Android API level of a device?
...level programatically by the system constant (Build.VERSION.SDK_INT). For example you can run some piece of code which requires newer API in the following way (it will execute if the current device's API level is at least 4)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.DONUT) {
}
To obtai...