大约有 47,000 项符合查询结果（耗时：0.0414秒） [XML]
Checking if array is multidimensional or not?
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136
The short answer is no you can't do it without at least looping implicitly if the 'second dime...
.NET JIT potential error?
...sing Visual Studio 2008 and targeting .NET 3.5. I've also tried .NET 3.5 SP1.
3 Answers
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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
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119
I'd just use zip:
In [1]: from pandas import *
In [2]: def calculate(x):
...: return ...
Cross browser JavaScript (not jQuery…) scroll to top animation
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140
function scrollTo(element, to, duration) {
if (duration <= 0) return;
var differenc...
Get the first N elements of an array?
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edited Oct 13 '14 at 16:22
mandza
31877 silver badges2323 bronze badges
answered Sep 15 '...
Finding the index of elements based on a condition using python list comprehension
...nstead of a list.
>>> import numpy
>>> a = numpy.array([1, 2, 3, 1, 2, 3])
>>> a
array([1, 2, 3, 1, 2, 3])
>>> numpy.where(a > 2)
(array([2, 5]),)
>>> a > 2
array([False, False, True, False, False, True], dtype=bool)
>>> a[numpy.where(a ...
Return positions of a regex match() in Javascript?
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231
exec returns an object with a index property:
var match = /bar/.exec("foobar");
if (match)...
What is the difference between “int” and “uint” / “long” and “ulong”?
...arts do not have "u" prefixed.
The limits for int (32 bit) are:
int: –2147483648 to 2147483647
uint: 0 to 4294967295
And for long (64 bit):
long: -9223372036854775808 to 9223372036854775807
ulong: 0 to 18446744073709551615
...
Override browser form-filling and input highlighting with HTML/CSS
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164
+150
for th...
Regular expression to match non-ASCII characters?
...matches any character which is not contained in the ASCII character set (0-127, i.e. 0x0 to 0x7F).
You can do the same thing with Unicode:
[^\u0000-\u007F]+
For unicode you can look at this 2 resources:
Code charts list of Unicode ranges
This tool to create a regex filtered by Unicode block...