大约有 5,000 项符合查询结果（耗时：0.0178秒） [XML]
Minimum and maximum date
... all integers from –9,007,199,254,740,992 to 9,007,199,254,740,992; this range suffices to measure times to millisecond precision for any instant that is within approximately 285,616 years, either forward or backward, from 01 January, 1970 UTC.
The actual range of times supported by ECMAScript Dat...
MVC (Laravel) where to add logic
...
// post as created by the current user.
$post->user_id = auth()->id();
}
$post->title = $this->title;
$post->description = $this->description;
// Perform other tasks, maybe fire an event, dispatch a job.
if ($post-...
Is 1.0 a valid output from std::generate_canonical?
...egative infinity. Since generate_canonical should generate a number in the range [0,1), and we're talking about an error where it generates 1.0 occasionally, wouldn't rounding towards zero be just as effective?
– Marshall Clow
Aug 26 '15 at 18:12
...
Split list into smaller lists (split in half)
...ngth // wanted_parts: (i+1)*length // wanted_parts]
for i in range(wanted_parts) ]
A = [0,1,2,3,4,5,6,7,8,9]
print split_list(A, wanted_parts=1)
print split_list(A, wanted_parts=2)
print split_list(A, wanted_parts=8)
...
Retrieve the commit log for a specific line in a file?
...
See also Git: discover which commits ever touched a range of lines.
Since Git 1.8.4, git log has -L to view the evolution of a range of lines.
For example, suppose you look at git blame's output. Here -L 150,+11 means "only look at the lines 150 to 150+11":
$ git blame -L...
Get month name from number
...more useful here.
Here is an example:
import calendar
for month_idx in range(1, 13):
print (calendar.month_name[month_idx])
print (calendar.month_abbr[month_idx])
print ("")
Sample output:
January
Jan
February
Feb
March
Mar
...
...
Matrix Transpose in Python
...ixTranspose(anArray):
transposed = [None]*len(anArray[0])
for t in range(len(anArray)):
transposed[t] = [None]*len(anArray)
for tt in range(len(anArray[t])):
transposed[t][tt] = anArray[tt][t]
print transposed
This works, though there are more Pythonic ways ...
angularjs directive call function specified in attribute and pass an argument to it
...e
},
},
regularSearch: function(e) {
console.log(this.range);
this.fire('complete', {'text': this.text});
},
listeners: {
'button.click': 'regularSearch',
}
});
</script>
</dom-module>
Page
<search id="search" polimer-binding="sear...
How do I get the number of elements in a list?
...he builtin function, len:
items = []
items.append("apple")
items.append("orange")
items.append("banana")
And now:
len(items)
returns 3.
Explanation
Everything in Python is an object, including lists. All objects have a header of some sort in the C implementation.
Lists and other similar bu...
Analyze audio using Fast Fourier Transform
...e above 25hz).
Depending on how many bars you want, you divide the whole range into 1/X octave ranges.
Based on a given center frequency of A on the bar, you get the upper and lower limits of the bar from:
upper limit = A * 2 ^ ( 1 / 2X )
lower limit = A / 2 ^ ( 1 / 2X )
To calculate the next a...