大约有 47,000 项符合查询结果（耗时：0.0582秒） [XML]
warning: implicit declaration of function
...
236
You are using a function for which the compiler has not seen a declaration ("prototype") yet.
...
How do I concatenate two arrays in C#?
...
23 Answers
23
Active
...
The forked VM terminated without saying properly goodbye. VM crash or System.exit called
...
134
I had the same problem and solved by adding:
<argLine>-Xmx1024m -XX:MaxPermSize=256m<...
Rails: how do I validate that something is a boolean?
...
Since Rails 3, you can do:
validates :field, inclusion: { in: [ true, false ] }
share
|
improve this answer
|
...
Convert a Scala list to a tuple?
How can I convert a list with (say) 3 elements into a tuple of size 3?
13 Answers
13
...
How can I compare two lists in python and return matches
...one, but by far the most obvious way to do it is:
>>> a = [1, 2, 3, 4, 5]
>>> b = [9, 8, 7, 6, 5]
>>> set(a) & set(b)
{5}
if order is significant you can do it with list comprehensions like this:
>>> [i for i, j in zip(a, b) if i == j]
[5]
(only works fo...
How do I zip two arrays in JavaScript? [duplicate]
...
Use the map method:
var a = [1, 2, 3]
var b = ['a', 'b', 'c']
var c = a.map(function(e, i) {
return [e, b[i]];
});
console.log(c)
DEMO
share
|
...
Effective way to find any file's Encoding
...s cannot determine the file's encoding.
*UPDATED 4/08/2020 to include UTF-32LE detection and return correct encoding for UTF-32BE
/// <summary>
/// Determines a text file's encoding by analyzing its byte order mark (BOM).
/// Defaults to ASCII when detection of the text file's endianness fai...
How to equalize the scales of x-axis and y-axis in Python matplotlib?
...o this:
from matplotlib import pyplot as plt
plt.plot(range(5))
plt.xlim(-3, 3)
plt.ylim(-3, 3)
plt.gca().set_aspect('equal', adjustable='box')
plt.draw()
doc for set_aspect
share
|
improve this ...
How to check if all elements of a list matches a condition?
I have a list consisting of like 20000 lists. I use each list's 3rd element as a flag. I want to do some operations on this list as long as at least one element's flag is 0, it's like:
...