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What does -1 mean in numpy reshape?
...oned criteria
Now see the example.
z = np.array([[1, 2, 3, 4],
[5, 6, 7, 8],
[9, 10, 11, 12]])
z.shape
(3, 4)
Now trying to reshape with (-1) . Result new shape is (12,) and is compatible with original shape (3,4)
z.reshape(-1)
array([ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1...
Extract a number from a string (JavaScript)
... leading non-digits with nothing
in the general case:
thenum = "foo3bar5".match(/\d+/)[0] // "3"
Since this answer gained popularity for some reason, here's a bonus: regex generator.
function getre(str, num) {
if(str === num) return 'nice try';
var res = [/^\D+/g,/\D+$/g,/^\D+|\D+$/...
Parse a URI String into Name-Value Collection
...
357
If you are looking for a way to achieve it without using an external library, the following cod...
How to remove all leading zeroes in a string
...
465
ltrim:
$str = ltrim($str, '0');
...
Algorithm to detect intersection of two rectangles?
... |
edited Apr 11 '11 at 15:58
Community♦
111 silver badge
answered Sep 22 '08 at 15:28
...
What is the easiest way to make a C++ program crash?
... duskwuff -inactive-duskwuff -inactive-
166k2525 gold badges209209 silver badges259259 bronze badges
...
Shuffling a list of objects
... i in range(10)]
shuffle(x)
# print(x) gives [[9], [2], [7], [0], [4], [5], [3], [1], [8], [6]]
# of course your results will vary
Note that shuffle works in place, and returns None.
share
|
im...
How to parse the AndroidManifest.xml file inside an .apk package
...
175
+200
Use andr...
jQuery animate backgroundColor
...th.max(Math.min(parseInt((g.pos * (g.end[0] - g.start[0])) + g.start[0]), 255), 0), Math.max(Math.min(parseInt((g.pos * (g.end[1] - g.start[1])) + g.start[1]), 255), 0), Math.max(Math.min(parseInt((g.pos * (g.end[2] - g.start[2])) + g.start[2]), 255), 0)].join(",") + ")"
}
});
funct...
How do you debug PHP scripts? [closed]
...
145
votes
Try Eclipse PDT to setup an Eclipse environment that has debugging features l...